PT0E-13523

Portable Multi-Gas Monitor

GX-6000
Operating Manual(PT0-135)

Contents
1 Outline of the Product ..................................................................................................................................... 4
Preface............................................................................................................................................................ 4
Purpose of use................................................................................................................................................ 4
Checking gases to be detected ...................................................................................................................... 5
Definition of DANGER, WARNING, CAUTION and NOTE ............................................................................ 6
Method of confirmation for Standards and Explosion proof specification...................................................... 6
2 Important Notices on Safety............................................................................................................................ 7
2-1. Danger cases .......................................................................................................................................... 7
2-2. Warning cases ......................................................................................................................................... 8
2-3. Precautions.............................................................................................................................................. 9
2-4. Safety information ................................................................................................................................. 12
3 Product Components .................................................................................................................................... 14
3-1. Main unit and standard accessories ..................................................................................................... 14
3-2. Names and functions for each part ....................................................................................................... 18
4 Alarm Activation ............................................................................................................................................. 23
4-1. Gas alarm activation ............................................................................................................................. 23
4-2. Fault alarm activation ............................................................................................................................ 26
4-3. Panic alarm............................................................................................................................................ 27
4-4. Man-down alarm .................................................................................................................................... 28
5 How to Use .................................................................................................................................................... 29
5-1. Before using the gas monitor ................................................................................................................ 29
5-2. Preparation for start-up ......................................................................................................................... 29
5-3. How to start the gas monitor ................................................................................................................. 37
5-4. Air calibration ......................................................................................................................................... 40
Attaching the CO2 removal filter (CF-284) (only for the specification targeting CO2 for detection) ......... 40
Attaching the activated carbon filter (only for the specification targeting VOC for detection) ................. 41
Air calibration procedure ........................................................................................................................... 43
5-5. Setting the CAL CODE of the Pre-Filter Tube(Only for the specification with VOC<10.0eV>sensor) . 45
5-6. How to detect ........................................................................................................................................ 47
5-7. Power-off ............................................................................................................................................... 55
6 Setting Procedure ......................................................................................................................................... 56
6-1. Display setting (DISP mode) flow.......................................................................................................... 56
6-2. Display setting ....................................................................................................................................... 61
6-3. User mode setting ................................................................................................................................. 78
7 Maintenance .................................................................................................................................................. 85
7-1. Maintenance intervals and items .......................................................................................................... 85
7-2. Calibration (CAL mode) ......................................................................................................................... 87
7-2-1. Preparation for calibration .............................................................................................................. 87
7-2-2. Entering CAL mode ........................................................................................................................ 88
7-2-3. Air calibration (AIR CAL) ................................................................................................................ 89
7-2-4. AUTO CAL ...................................................................................................................................... 91
7-2-5. SINGLE CAL .................................................................................................................................. 93
7-2-6. TUBE CAL (only for the specification with VOC<10.0eV>sensor ) ............................................... 94
7-2-7. BUMP TEST ................................................................................................................................... 97
7-3. How to clean .......................................................................................................................................... 99
7-4. Parts replacement ............................................................................................................................... 100
7-4-1. Gas inlet filter replacement .......................................................................................................... 100
7-4-2. Sensor filter replacement ............................................................................................................. 101
7-4-3. Sensor replacement ..................................................................................................................... 102
7-4-4. VOC sensor maintenance ............................................................................................................ 104
7-4-5. Regular replacement parts ........................................................................................................... 107
8 Storage and Disposal .................................................................................................................................. 109
8-1. Procedures to store the gas monitor or leave it for a long time .......................................................... 109
8-2. Procedures to use the gas monitor again ........................................................................................... 109
8-3. Disposal of products ............................................................................................................................ 110
9 Troubleshooting ............................................................................................................................................ 111
9-1. Abnormalities on unit ............................................................................................................................ 111
9-2. Abnormalities of readings .................................................................................................................... 113
10 Product Specifications............................................................................................................................... 114-2-

10-1. List of specifications .......................................................................................................................... 114
10-2. List of accessories ............................................................................................................................. 117
11 Appendix .................................................................................................................................................... 118
11-1. Calibration history/various trend/event history functions .................................................................. 118
11-2. Definition of terms.............................................................................................................................. 120
11-3. List of gases for reading VOC ........................................................................................................... 121-3-

1 Outline of the ProductPreface11Outline of the ProductPrefaceThank you for choosing our portable multi-gas monitor GX-6000 (hereinafter referred to as "gas monitor").
First of all, please check that the model number of the product you purchased matches the model numberof the product targeted by this manual.
This manual contains handling methods and specifications for proper use of this product. Not only the
first-time users but also the users who have already used the product must read and understand thismanual before using it.
Note that the contents of this manual are subject to change without notice for product improvement. Also,
any copying or reproduction of this manual, in whole or in part, without permission is prohibited.
Regardless of warranty period, we shall not make any indemnification for accidents and damage causedby using this gas monitor.
Make sure to read the warranty policy specified on the warranty.

Purpose of use
This product is a pump suction type multi-gas monitor that enables simultaneous monitoring of up to six
different gases: oxygen in the air, combustible gas <%LEL>, toxic gases (carbon monoxide and hydrogensulfide), and two of gases such as volatile organic compound, sulfur
dioxide, etc. detected by the variety of smart sensors that are designed for a specific target gas
detection.The combustible gases detected by this gas monitor are general combustible gases used inordinary factories, oil tankers, etc., that is HC (displayed in isobutane conversion) or CH4 (methane).
Note that detection results of the gas monitor are not intended to guarantee life or safety in any way.
The gases to be detected varies by the sensors installed in the gas monitor. Check the gases to be
detected before use and conduct gas detection properly in accordance with purposes.
Check the gases to be detected by your GX-6000 in 'Checking gases to be detected' (P. 5).

-4-

1 Outline of the Product

Checking gases to be detected

Checking gases to be detected
The gases to be detected varies by the sensors installed in the gas monitor.
Check the gases to be detected by your GX-6000 with the nameplate attached to the side of the productbefore use.

Check the gases to be detected with the product code⑨
<Base sensor>
Position

Specification

SymbolH：Available (HC)①

Combustible gas (HC) <%LEL> sensor

M：Available (CH4)0：None1：Available (O2)②

Oxygen (O2) sensor③

Hydrogen sulfide (H2S) sensor④

Carbon monoxide (CO) sensor

0：None1：Available (H2S)
0：None1：Available (CO)
0：None＜Smart sensor＞
Position⑤⑥⑦⑧

Specification

SymbolVolatile organic compound (VOC) <10.6eV/ppb> sensor

P1

Volatile organic compound (VOC) <10.6eV/ppm> sensor
Volatile organic compound (VOC) <10.0eV> sensor

P2
P3

Sulfur dioxide (SO2) sensor

E1

Nitrogen dioxide (NO2) sensor

E2

Hydrogen cyanide (HCN) sensor

E3

Ammonia（NH3）sensor

E4

Chlorine(Cl2) sensor
Phosphine (PH3)
Carbon dioxide (CO2) <vol%>sensor
Combustible gas (HC) <%LEL/vol%> sensor
Combustible gas (CH4) <%LEL/vol%> sensor
Carbon dioxide (CO2) <ppm>sensor

E5
E6
D1
D2
D3
D4
00

―

-5-

1 Outline of the ProductDefinition of DANGER, WARNING, CAUTION and NOTE＜Battery＞
Position⑨

Example)Specification

SymbolLithium ion battery
Dry alkaline battery

L
D

When “1M10P1E3L” is indicated, the gases to be detected are “O2, CH4 <%LEL>, H2S,
VOC (ppb) and HCN”, battery type is Lithium ion battery.

Definition of DANGER, WARNING, CAUTION and NOTE
Throughout this manual, the following indications are used to ensure safe and effective work.

DANGER

Indicates that improper handling may cause death or serious damage on
life, health or assets.

WARNING

Indicates that improper handling may cause serious damage on health orassets.

CAUTION
NOTE

Indicates that improper handling may cause minor damage on health orassets.
Indicates advice on handling.

Method of confirmation for Standards and Explosion
proof specification
This instrument has some specification depends on standard and explosion proof certificate. Pleaseconfirm the detector specification before using. Please refer Declaration of Conformity that is at the end of
this manual if you have CE/UKCA marking type. You can confirm instrument specification to see nameplate as follows.
(Upper side)(Right side)

ATEX/IECEx/UKEX certificate
CE/UKCA marking

Japan Ex certificate

Type name plate-6-

2 Important Notices on Safety

2-1. Danger cases

22Important Notices on
SafetyTo maintain the performance and use the gas monitor safely, observe the following instructions of
DANGER, WARNING and CAUTION.

2-1. Danger cases
DANGER
About use
While conducting measurement in a manhole or confined space, do not lean over or look into the
manhole or closed space. It may lead to dangers because oxygen-deficient air or other gases
may blow out.
Oxygen-deficient air or other gases may be discharged from the gas exhausting outlet. Neverinhale the air or gases.
High-concentration (100 %LEL or higher) gases may be discharged from the gas exhaustingoutlet. Never use fire near it.

WARNING
If any abnormality is found on the gas monitor, promptly contact RIKEN KEIKI. Visit our Web site
to find your nearest RIKEN KEIKI office.
Web site: https://www.rikenkeiki.co.jp/-7-

2 Important Notices on Safety

2-2. Warning cases

2-2. Warning cases
WARNING
Sampling point pressure
The gas monitor is designed to draw gases around it under the atmospheric pressure. If
excessive pressure is applied to the gas inlet and outlet of the gas monitor, detected gases mayleak out from its inside and may cause dangerous conditions. Be sure that excessive pressure is
not applied to them while used.
Handling of sensor
Never disassemble the electrochemical type sensor or galvanic cell type sensor. Inside
electrolyte may cause severe skin burns if it contacts skin. Also, it may cause blindness if it
contacts eyes. If electrolyte is adhered on your clothes, that part on your clothes is discolored or
its material is decomposed. If contact occurs, rinse the area immediately with a large quantity ofwater.
Fresh air adjustment in the atmosphere
When the fresh air adjustment is performed in the atmosphere, check the atmosphere forfreshness before beginning the adjustment. If interference gases exist, the adjustment cannot be
performed properly, thus causing erroneous detection and leading to dangers when the gas
leaks.

WARNING
Response to gas alarm
Issuance of a gas alarm indicates that there are extreme dangers. Take proper actions based onyour judgment.
Panic alarm and man-down alarm
Panic and man-down alarms are intended to assist users and people around in making adecision and not intended to guarantee life or safety. Do not depend only on this function to use
the gas monitor.
(Normally the man-down alarm is set to OFF and unavailable. To use this function, pleasecontact RIKEN KEIKI.)
If a panic or man-down alarm is triggered, the people around must take an appropriate action
after confirming the situation.
Battery level check
Before use, check that there remains sufficient battery power. When the gas monitor is used forthe first time or is not used for a long period, the batteries may be exhausted. Replace them withnew ones before use.
If a low battery voltage alarm is triggered, gas detection cannot be conducted. If the alarm istriggered during use, turn off the power and promptly charge or replace the batteries in a safe
place.
OthersDo not throw the gas monitor into fire.
Do not wash the gas monitor in a washing machine or ultrasonic cleaner.
Do not block the buzzer sound opening. No alarm sound can be heard.
Do not remove batteries while the power is ON.

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2 Important Notices on Safety

2-3. Precautions

2-3. Precautions
CAUTION
Do not use the gas monitor where it is exposed to oil, chemicals, etc. Do not submerge the gas
monitor under water on purpose.
• Do not use in a place where the gas monitor is exposed to liquids such as oil and chemicals.
• The gas inlet and outlet are not water-proof. Be careful not to let water such as rainwater get into
these parts. Because this may cause trouble and gas cannot be detected.
• Do not place the gas monitor where water or dirt gets accumulated. The gas monitor placed atsuch a location may malfunction due to water or dirt that gets into the buzzer sound opening, gas
inlet, etc.
• Note that drawing in dirty water, dust, metallic powder, etc. will significantly deteriorate thesensor sensitivities. Be very careful when the gas monitor is used in an environment where theseelements exist.
Do not use the gas monitor in a place where the temperature drops below -20 ºC or rises over
50 ºC.
• The operating temperature of the gas monitor is -20 - +50 ºC. Do not use the gas monitor at
higher temperatures, humidities and pressures or at lower temperatures than the operating
range.
• Avoid long-term use of the gas monitor in a place where it is exposed to direct sunlight.
• Do not store the gas monitor in a sun-heated car.
Observe the operating restrictions to prevent condensation inside the gas monitor.
Condensation formed inside the gas monitor causes clogging or gas adsorption, which may
disturb accurate gas detection. Thus, condensation must be avoided. In addition to theinstallation environment, carefully monitor the temperature/humidity of the sampling point toprevent condensation inside the gas monitor. Please observe the operating restrictions.
Do not use a transceiver near the gas monitor.
• Radio wave from a transceiver or other radio wave transmitting device near the gas monitor may
disturb readings. If a transceiver or other radio wave transmitting device is used, it must be used
in a place away from the gas monitor where it disturbs nothing.
• Do not use the gas monitor near a device that emits strong electromagnetic waves (highfrequency or high-voltage devices).
Verify that the pump operation status display is rotating before using the gas monitor.
If the pump operation status display is not rotating, gas detection cannot be performed properly.
Check whether the flow rate is lost.

-9-2 Important Notices on Safety

2-3. Precautions

CAUTION
Verify that the operation status display is blinking before using the gas monitor.
If the operation status display is not blinking, gas detection cannot be performed properly.
About sensor• Some sensors will respond to a gas other than their target gas. The table below indicates someof the gases that will cause an increased reading for the affected sensor. For example, if you areattempting to detect HCN and H2S is also present, the instrument’s HCN reading will be higher
than the environment’s actual HCN level.
Examples of interference gases that cause increased readings
Principle of sensor usedin GX-6000 (Target gas)／Interference gas

Electrochemical(HCN)Electrochemical(HCN)Electrochemical(HCN)Electrochemical(SO2)Electrochemical(SO2)Electrochemical(CO)Electrochemical(Cl2)Electrochemical(Cl2)Electrochemical(PH3)Electrochemical(PH3)Electrochemical(PH3)
New ceramic (HC/CH4)
Non-dispersive infrared type(HC/CH4)
PID (VOC)

／
／
／
／
／
／
／
／
／
／
／
／
／
／

H2S
SO2
C2H2
H2
CO
H2
SO2
HCl
SO2
HCN
H2S
Combustible gases
Hydrocarbon gases of combustible gases
VOC• Some toxic sensors will respond negatively to some gases that may be present along with thetarget gas. The table below indicates some of the gases that will cause a negative response anda decreased reading for the affected sensor.
Examples of interference gases that cause decreased readings
Principle of sensor usedin GX-6000 (Target gas)／Interference gas

Electrochemical(H2S)
NO2
／
NO2
Electrochemical(HCN)／SO2Electrochemical(NO2)／Electrochemical(SO2)NO2／Electrochemical(NH3)H2S／
Electrochemical(PH3)
NO2／• Exposing the catalytic combustible sensor to silicone, halogen gases, or sulfides may shorten thesensor’s life or cause malfunctions or inaccurate gas readings. Minimize the sensor’s exposure
to these gases as much as possible. If exposure occurs, allow the instrument to draw fresh air
and confirm that the readings return to fresh air values.
• Exposing the galvanic oxygen sensor to halogen gas or sulfides may shorten the sensor’s life orcause malfunctions or inaccurate gas readings. Minimize the sensor’s exposure to these gases
as much as possible. If exposure occurs, allow the instrument to draw fresh air and confirm thatthe readings return to fresh air values.
• An oxygen concentration higher than a certain level is required for the new ceramic combustible
gas sensor <%LEL> of the gas monitor to correctly detect gases and display concentrations.
• When measuring concentrations of oxygen in inert gases for a long time, the carbon dioxide
concentration in the air must be 15 % or less. When the gas monitor is used in the inert gas witha carbon dioxide concentration higher than 15 %, perform measurement in as short time as
possible. Using the gas monitor under high concentrations for a long time may shorten the life of
the oxygen sensor.
• The CO reading on GX-6000 may increase after being exposed to high concentration of VOC
gases. If the reading is not returned to zero, the charcoal filter for CO sensor is required. Contact
RIKEN KEIKI for the filter replacement.
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2 Important Notices on Safety

2-3. Precautions

CAUTIONBe careful when measuring concentrations of Cl2 and NH3 at a lower limit of operating
temperature (around -20 ºC), the response time to the gas may slow down due to the gas
characteristic.
When high concentrations of methane gas, ethane gas, propane gas, etc. are present, the PID
type VOC sensor may display "----" in the concentration display section, the lamp may blink, thebuzzer may sound, and measurement may become temporarily impossible.
Note that in an environment where these gases are present, even if "----" is not displayed on theconcentration display, the VOC concentration may not be measured correctly. Note that even if"----" is displayed in the concentration display section of the VOC sensor, sensors that are notaffected by anything other than the VOC sensor can continue to measure.
Example of interfering gas where "----" is displayed in the concentration
display section of a PID type VOC sensor
Interference gas／

Gas concentration

Methane6vol%／
Ethane80vol%／
Propane90vol%／
Never fail to perform a regular maintenance.
Never fail to perform a regular maintenance for the gas monitor to ensure safety. Continuing to
use the gas monitor without performing maintenance will compromise the sensitivity of thesensor, thus resulting in inaccurate gas detection.
Others• Pressing buttons unnecessarily may change the settings, preventing alarms from activatingcorrectly. Operate the gas monitor using only the procedures described in this operating manual.
• Do not drop or give shock to the gas monitor. The accuracy of the gas monitor may be
deteriorated.
• Do not use the gas monitor while charging it.
Do not jab the buzzer sound opening with a sharp-pointed item. The unit may malfunction or getdamaged, allowing foreign matters, etc. to get inside.
Do not remove the panel sheet on the LCD display. The dust-proof performance will be
deteriorated.
Do not affix a label or the like on the infrared communication port. Infrared communications canno longer be conducted.
Replacement of batteries• Turn off the power of the gas monitor before replacing batteries of the battery unit.
• Replace all of the three batteries with new ones at one time.
• Pay attention to the polarities of the batteries.
Usage• In a low-temperature environment, the operating time is shortened due to the battery
performance property.
• At low temperatures, the responses of the LCD display may slow down.
• Perform air calibration under pressure and temperature/humidity conditions close to those in theoperating environment and in fresh air.
• Perform air calibration after the reading is stabilized.
• If there is a sudden temperature change of 15 ºC or more between the storage and operational
locations turn on the power of the gas monitor, let it stand for about 10 minutes in a similar
environment to the operational location, and perform air calibration in fresh air before using it.
• When cleaning the gas monitor, do not splash water over it or use organic solvents such as
alcohol and benzine on it. The surface of the gas monitor may be discolored or damaged.
• If the gas monitor is not used for a long time, turn on the power at least once every six months
and check that the pump draws in air (about three minutes). The gas monitor, when not activatedfor a long time, may cease to work because of hardening of the grease in the pump motor.
• If the gas monitor is not used for a long time, store it after removing the batteries. Battery leaks
may result in fire, injury, etc.
• When using the gas monitor after long-term storage, never fail to perform a calibration. For
information on readjustment including calibration, please contact RIKEN KEIKI.

- 11 -

2 Important Notices on Safety

2-4. Safety information

2-4. Safety information
The GX-6000 can measure maximum six gases with six sensors.
Standard unit measures four gases with four sensors for general combustible gases(LEL), Oxygen(O2),
Hydrogen Sulfide(H2S) and Carbon Monoxide(CO).
For other remaining two slots are for Smart Sensors which consist of sensor part and circuit board and areconnected with apparatus through digital signal output so various sensors. Three different types of detection
principle are applied for Smart Sensors and up to two sensors can be installed into the GX-6000.
Gas is sampled by a built-in micro pump.
Either alkaline battery pack “BUD-6000” or lithium-ion battery pack “BUL-6000” can be installed into GX6000.
Structure of battery unit allows end users to replace it by themselves.
It is supposed to replace the battery unit, alkaline battery, and charge the rechargeable battery at nonhazardous area. Also, Charging BUL-6000 should be done with a specific model, BC-6000 or SDM-6000.
Specification for safety

GX-6000
Ex code T class
Ex ia IIB T4 Ga
II1G Ex ia IIB T4 Ga
Ex ia IIC T4 Ga
II1G Ex ia IIC T4 Ga
Ex ia IIB T4 Ga
II1G Ex ia IIB T4 Ga
Ex ia IIC T4 Ga
II1G Ex ia IIC T4 Ga
Ex ia IIB T3 Ga
II1G Ex ia IIB T3 Ga
Ex ia IIC T3 Ga
II1G Ex ia IIC T3 Ga

Ambient
temperature
range for use

Combustible
gas sensor

Battery-20°C to +50°C

Mounted

BUL-6000-20°C to +50°C

N/A

BUL-6000-20°C to +50°C

Mounted

BUD-6000LR6(TOSHIBA)-20°C to +50°C

N/A

BUD-6000LR6(TOSHIBA)-20°C to +50°C

Mounted

BUD-6000
MN1500(DURACELL)-20°C to +50°C

N/A

BUD-6000
MN1500(DURACELL)・Ambient temperature range during battery charging ： 0°C to +40°C

Electrical data
•Power supply of Li-ion battery unit : BUL-6000
Two parallel connected Li-ion cells used in battery pack BUL-6000 are from type Maxell
INR18650PB1 or SDI INR18650-15M or SONY US18650VT3.
Um = 250 V.
•Power supply of alkaline battery unit : BUD-6000
Powered by three series connected Alkaline AA batteries, type LR6 manufactured by Toshiba ortype MN1500 manufactured by DURACELL.

- 12 -

2 Important Notices on Safety

2-4. Safety information

Certificate numbers•IECEx Certificate number ： IECEx PRE 15.0011•ATEX Certificate number ： Presafe15 ATEX6171X
・UK Type Examination Certificate ： DNV 22 UKEX 25912X
List of standards•IEC 60079-0：2017
・EN IEC 60079-0:2018
・BS EN IEC60079-0:2018•IEC 60079-11：2011
・EN 60079-11:2012
・BS EN 60079-11:2012
Specific conditions of “X”-mark:Regarding ATEX specification, the measuring function according to Annex II paragraph 1. 5. 5 of
the Directive is not covered by this EU-type examination.
It shall comply with the requirements from the relevant European harmonized standards which
provide guidance on the performance of gas detection equipment and safety devices.
The measuring function according to schedule 1, paragraph 24 of the Regulation is not covered inthis UK-type examination. It shall comply with the requirements from the relevant UK DesignatedStandards which provide guidance on the performance of gas detection equipment.
WARNING•DO NOT CHARGE IN HAZARDOUS LOCATION.
•DO NOT CHARGE IT EXCEPT BY GENUINE CHARGER.
•DO NOT REPLACE BATTERY UNIT IN HAZARDOUS LOCATION.
•DO NOT REPLACE DRY BATTERIES IN HAZARDOUS LOCATION.
•DO NOT ATTEMPT TO DISASSEMBLE OR ALTER THE INSTRUMENT.
•USE ONLY WITH CONNECTED ALKALINE AA BATTERIES, TYPE LR6MANUFACTURED BY TOSHIBA OR TYPE MN1500 MANUFACTURED BY DURACELL.
INST. No. 0 0 0 0 0 0 0 0 0 0 0
AB C
DE
A: Manufacturing year (0 - 9)
B: Manufacturing month (1 - 9,XYZ for Oct. - Dec.)
C: Manufacturing lot
D: Serial number
E: Code of factory
2-7-6 Azusawa, Itabashi-ku, Tokyo, 174-8744, Japan
Phone : +81-3-3966-1113
Fax : +81-3-3558-9110 GIII
E-mail : intdept@rikenkeiki.co.jp
Web site : https://www.rikenkeiki.co.jp- 13 -

3 Product Components

3-1. Main unit and standard accessories

3
3

Product Components

3-1. Main unit and standard accessories
Unpack and check the main unit and accessories.
If any part is missing, contact RIKEN KEIKI.

Main unit
See '3-2. Names and functions for each part' (P. 18) for names and functions of each part of the gas
monitor and LCD display.

GX-6000 main unit

- 14 -

3 Product Components

3-1. Main unit and standard accessories

Standard accessories

Lithium ion
battery unit
(BUL-6000)*
1 pc

Charger*
1 pc

Dry battery unit**(BUD-6000)
1 pc

AA alkaline
battery**
3 pcs

Protect cover
1 pc

Belt clip
1 pc(3 screws)

Protect the gas
monitor from shocks
by being hit, etc.

The gas monitor
can be hung from abelt.

Taper nozzle
1 pc

Hand strap
1 pc

CO2 removal
filter(CF-284)
1 pc

LCD protection film
1 pc
Protect the display
from fine scratches.

Provided only forthe specification
with CO2 sensor

Carbon filter(CF-8501)
1pc

Carbon filter(CF-8350)
1pc

Provided only forthe specification
with both of VOC
sensor and CO2
sensor

Provided only for the
specification with
VOC sensor

Operatingmanual* / ** The lithium ion battery unit / battery charger, or the dry battery unit / alkaline battery are provided.
Product warranty- 15 -

3 Product Components

3-1. Main unit and standard accessories

NOTE
The charger can be attached to a DIN rail to use.
Use a DIN rail of IEC715 top-hat type TH35.
Hang the tab of the charger unit on the barb part of DIN rail, and thenattach the stopper to the barb part of DIN rail.
To release, push the stopper downward.

Tabs

Stopper- 16 -

3 Product Components

3-1. Main unit and standard accessories

Optional items (sold separately)

Lithium ion
battery unit
(BUL-6000)
1 pc

Charger
1 pc

Dry battery unit
(BUD-6000)
1 pc

AA alkaline battery
3 pcs

Gas samplingprobe

Gas sampling hose
(5 m/10 m/20 m/
30 m)

Various filters

Various gas
sampling bag

PID-Pre-Filter Tube
Benzene(CF-8338)
1pc(10 tubes)

Tube holder(GF-284)
1pc
only for the
specification with
VOC<10.0eV>sensor

only for the
specification with
VOC<10.0eV>sensor

Data logger
management
program

Lamp cleaning kit

Setting program
for list of gases forreading VOC

CAUTION
The gas sampling hose may absorb a small amount of several of the GX-6000’s target gases,
such as toxic gases, solvents, or VOCs. This absorption causes the target gas reading on the
GX-6000 to be lower than the sampled environment’s actual gas level.

- 17 -

3 Product Components

3-2. Names and functions for each part3-2. Names and functions for each part
This section describes names and functions of main unit and battery unit parts and LCD display.

Main unit

Name

Main function(1)

LCD display

Displays the gas concentration and so on.

(2)

Buzzer sound opening

Emits operation and judging sounds. (Do not block it.)(3)

Alarm LED arrays

The red lamp blinks in response to an alarm.

(4)

Illumination lamp

Lights up by holding down the(5)

Infrared communication
port

Used to carry out data communications with a PC when the datalogger management program is used.

(illumination lamp) button.

(6)/AIR button

Used to perform air calibration on the detection screen. Or used
to move the cursor (>) up in the DISP and user modes.

(7)

SHIFT//(PANIC) button

Used to move the cursor (>) down in the DISP and user modes.
In emergency situations, hold down this button to trigger a panic
alarm.

(8)

DISP/LOCK button

Displays the DISP mode and changes the display.
Holding down this button with LCD inversion (P. 74) set locks
the display.

- 18 -

3 Product Components

3-2. Names and functions for each part

Name

Main function(9)

RESET/ (illuminationlamp) button

Used to confirm and reset an alarm. Holding down this button
turns on the upper illumination lamp.

(10)

POWER/ENTER button

Turns on/off the power. Or used to confirm selection in the DISP
and user modes.

(11)

Gas inlet

Draws in a gas. (Do not block it.)(12)

Gas outlet

Exhausts the gas drawn into the gas monitor. (Do not block it.)(13)

Holes for hand strap(2 positions)

Used to attach the provided hand strap.

(14)

Sensor coverProtects the sensor inside. May be opened only when thesensor is to be replaced.

(15)Filter caseProtects the dust filter inside. Do not remove the case except for
maintenance and replacement.

(16)

Battery unit release lever

Push the lever while sliding it to remove the battery unit.

(17)

Battery unit connection
terminal

Used to supply power of the battery unit to the gas monitor.

CAUTION
Do not jab the buzzer sound opening with a sharp-pointed item. Water, foreign matters, etc. may
get inside and cause malfunction or damage.
Do not remove the panel sheet on the surface. The water-proof and dust-proof performances will
be deteriorated.
Do not affix a label or the like on the infrared communication port. Infrared communications canno longer be conducted.

NOTE
In this operating manual, the buttons equipped with multiple functions are described in operational
procedures in the following manner.
Example) POWER/ENTER button is described as follows:• POWER button in turning on/off the power• ENTER button in confirming settings.

- 19 -

3 Product Components

3-2. Names and functions for each part

Battery unit
<Lithium Ion Battery Unit (BUL-6000)><Dry Battery Unit (BUD-6000)>- 20 -

3 Product Components

3-2. Names and functions for each part

LCD display<Normal Mode>

(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)

Name
Operating state display
Battery level display
Clock display
Pump operation status
display
Combustible gas
concentration
Oxygen concentration
Hydrogen sulfide
concentration
Carbon monoxide
concentration
Gas concentration
detected by smart
sensorBar display

Main function
Displays the operating status. Blinks at a normal state.
Displays the battery level. See 'NOTE' for a guide for battery level.
Displays the current time.
Displays the drawing status. Rotates at a normal state.

Displays the gas concentration as numeric output.

Displays the gas concentration with bar.

NOTE
The gas concentration display positions can be changed. See 'Changing display positions ofmeasured gases' (P. 81) for how to change the display positions.
The battery level is indicated as follows:
Sufficient
Low
Need charging (replacement of batteries)
If the battery level further drops, the battery icon starts blinking.

- 21 -

3 Product Components

3-2. Names and functions for each part

<Leak Check Mode>
The gas monitor is equipped with leak check mode as well as normal mode for combustible gas using
the new ceramic sensor. The leak check mode, however, is set to OFF normally and thus unavailable.
To use this function, please contact RIKEN KEIKI.
Leak check full scale value can be selected from 500, 1000, 2000 and 5000 ppm.
The following figure shows the LCD display in the leak check mode.

(1)

Name
Operating state display(2)

Battery level display(3) Clock display(4) Pump operation status display(5) Gas concentration display(6)

Leak check full scale display(7)

Bar display

Main function
Displays the operating status. Blinks at a normal state.
Displays the battery level. See 'NOTE' (P. 21) for a guide forbattery level.
Displays the current time.
Displays the drawing status. Rotates at a normal state.
Displays the gas concentration as numeric output.
Displays the full scale value to be used in the leak check
mode.
Displays the gas concentration with bar.

- 22 -

4 Alarm Activation

4-1. Gas alarm activation

4
4

Alarm Activation

4-1. Gas alarm activation<Gas Alarm Type>"Gas alarm" is triggered when the concentration of detected gas reaches or exceeds the alarm setpointvalues shown in the following table. (Self-latching)Gas alarm types are the first alarm (AL1), second alarm (AL2), TWA alarm, STEL alarm and OVER alarm(over scale).
First
SecondTWA
STEL
Alarm type
OVER alarm
alarm
alarm
alarm
alarm
Oxygen (O2)

19.5 vol%23.5 vol%－－40.0 vol%10 %LEL

50 %LEL－－

100 %LEL

5.0 ppm
25 ppm30.0 ppm
50 ppm

10.0 ppm
25 ppm

15.0 pm
200 ppm

100.0 ppm
500 ppm

5000 ppb

10000 ppb－－

40000 ppb

400.0 ppm

1000 ppm－－

4000 ppm

5 ppm

10 ppm－－100 ppm

2.00 ppm

5.00 ppm

2.00 ppm

5.00 ppm

99.90 ppm

Nitrogen dioxide (NO2)

3.00 ppm

6.00 ppm

3.00 ppm－

20.00 ppm

Hydrogen cyanide (HCN)

5.0 ppm

10.0 ppm－

4.7 ppm

15.0 ppm

Ammonia(NH3)
Chlorine(Cl2)
Phosphine(PH3)
Carbondioxide(CO2)<vol%>
Carbondioxide(CO2)<ppm>
Combustible gas(HC)<%LEL/vol%>Combustible gas(CH4)<%LEL/vol%>25.0 ppm
0.50 ppm
0.30ppm

50.0 ppm
1.00 ppm
1.00ppm

25.0 ppm
0.50 ppm
0.30ppm

35.0 ppm
1.00 ppm
1.00ppm

400.0 ppm
10.00 ppm
20.00ppm

0.50 vol%3.00 vol%0.50 vol%3.00 vol%10.00 vol%5000 ppm－

5000 ppm－

10000 ppm

10 %LEL/－ 50 %LEL/－

－/－

－/－

30.0 vol%10 %LEL/－ 50 %LEL/－

－/－

－/－

100.0 vol%Combustible gas(HC/CH4)<%LEL>
Hydrogen sulfide (H2S)
Carbon monoxide (CO)Volatile organic
compound (VOC)<10.6eV / ppb>
Volatile organic
compound (VOC)<10.6eV / ppm>
Volatile organic
compound (VOC)<10.0eV>*
Sulfur dioxide (SO2)* Alarm point for normal mode. Gas alarm is not triggered in Benzene Select Mode.

- 23 -

4 Alarm Activation

4-1. Gas alarm activation<Sounding Buzzer and Blinking Lamp for Gas Alarm>
In response to a gas alarm, the buzzer sounds, the alarm LED arrays blink and vibration occurs in two
steps.
The following shows the operations of each type.
Alarm typeFirst alarm
Second alarm
TWA alarm
STEL alarm
OVER alarmSounding
Repeatedly
Repeatedly
Repeatedly
Repeatedly
Repeatedly
buzzersounds strong
sounds strong
sounds strong
sounds strong
sounds strong
and weakand weakand weakand weakand weakbeeps at about
beeps at about
beeps at about
beeps at about
beeps at about
0.5-second
1-second
1-second
0.5-second
1-second
intervals.
intervals.
intervals.
intervals.
intervals.
"Beep, beep,"Beep, beep""Beep, beep""Beep, beep,"Beep, beep"
beep, beep"
beep, beep"
Blinking
Repeatedly
Repeatedly
Repeatedly
Repeatedly
Repeatedly
alarm LED
blinks at about
blinks at about
blinks at about
blinks at about
blinks at aboutarrays0.5-second
1-second
1-second
0.5-second
1-second
intervals.
intervals.
intervals.
intervals.
intervals.
Vibration
Vibrate at an alarm state.

"Alarm pattern (H-HH)""Alarm pattern (L-H)"(*Oxygen deficiency alarm): 1-sec interval: 0.5-sec interval: 1-sec interval: 0.5-sec interval

RESET

RESET

2nd alarm
setpoint
1st alarm
setpoint

2nd alarm
setpoint
1st alarm
setpoint

Time

Time
Alarm lamp

Alarm lamp

BuzzerBuzzer<Gas Alarm Display>
In case a gas alarm occurs, the gas concentration and alarm detail are displayed alternately.
If the detection range is exceeded (over scale), [OVER] is displayed in the gas concentration display area.

Display example
Methane (CH4) concentration: 10 %LEL
First alarm triggered
Alarm type
LCD display

First alarm

Second alarm

TWA alarm

STEL alarm

OVER alarm

Displays thegasconcentrationand [AL1]
alternately.

Displays thegasconcentrationand [AL2]
alternately.

Displays thegasconcentrationand [TWA]
alternately.

Displays thegasconcentrationand [STEL]
alternately.

Displays thegasconcentrationand [OVER]
alternately.

- 24 -

4 Alarm Activation

4-1. Gas alarm activation

WARNING
Issuance of a gas alarm indicates that there are extreme dangers. Take proper actions based onyour judgment.

NOTE
Responses to an alarm can be checked by alarm test in the DISP mode (P. 67). Note that thedisplay is not changed during alarm test.

- 25 -

4 Alarm Activation

4-2. Fault alarm activation

4-2. Fault alarm activation"Fault alarm" is triggered when an abnormality is detected in the gas monitor. (Self-latching)Fault alarm types are system abnormalities, battery voltage abnormalities, clock abnormalities, low flow
rate, sensor abnormalities and calibration failure.
In response to a fault alarm, the buzzer sounds and alarm LED arrays blink.
•
Sounding buzzer: Repeatedly sounds intermittent beeps at about one-second intervals. "Beep
beep, beep beep"•
Blinking alarm LED arrays: Repeatedly blinks at about one-second intervals.
The following shows display examples of fault alarms.

System abnormalities

Battery voltage
abnormalities

Low flow rate

Sensor abnormalities/
calibration failure

Clock abnormalities

If a fault alarm is triggered, determine the cause and take appropriate action.
If the gas monitor has problems and is repeatedly malfunctioning, contact RIKEN KEIKI immediately.

NOTE
For information on malfunctions (error messages), see 'Troubleshooting' (P. 111).

- 26 -

4 Alarm Activation

4-3. Panic alarm

4-3. Panic alarm
A panic alarm is a manually triggered alarm to notify the people around of abnormalities.

WARNING
The panic alarm is intended to assist users and people around in making a decision. The detection
results are not intended to guarantee life or safety in any way. Do not depend only on this function to
use the gas monitor.
Use the panic alarm appropriately after confirming the situation.

<Sounding Buzzer and Blinking Lamp for Panic Alarm>
Alarm type
Sounding
buzzerBlinking
alarm LED
arraysPreliminary alarm

Main Alarm

Repeatedly sounds intermittent blips atabout 0.5-second intervals.
"Blip, blip, blip, blip"
Repeatedly blinks at about 0.5-second
intervals.

Repeatedly sounds strong and weak beeps
at about 1-second intervals.
"Beep, beep, beep, beep"
Repeatedly blinks at about 1-second
intervals.

Trigger and pattern of panic alarm
Hold down the PANIC button to trigger a panic alarm when sensing an abnormality.
For a panic alarm, a main alarm is triggered after a five-second preliminary alarm.

NOTE
To stop a preliminary or main alarm of panic alarm, press the RESET button.

- 27 -

4 Alarm Activation

4-4. Man-down alarm

4-4. Man-down alarm
A man-down alarm is triggered if the built-in motion sensor, which monitors the motion of the user carrying
the gas monitor, detects no motion of the user for a certain period of time.
Normally the man-down alarm is set to OFF and unavailable. To use this function, please contact RIKEN
KEIKI.

WARNING
The man-down alarm is intended to assist people around the user in making a decision. The
detection results are not intended to guarantee life or safety in any way. Do not depend only on
this function to use the gas monitor.
Use the man-down alarm appropriately after confirming the situation.

<Sounding Buzzer and Blinking Lamp for Man-down Alarm>
Alarm type

Preliminary alarm 1

Preliminary alarm 2

Main alarmSounding
buzzerRepeatedly sounds
intermittent blips at about
1-second intervals.
"Blip, blip"
Repeatedly blinks at about
1-second intervals.

Repeatedly sounds
intermittent blips at about
0.5-second intervals.
"Blip, blip, blip, blip"
Repeatedly blinks at about
0.5-second intervals.

Repeatedly sounds strong
and weak beeps at about
1-second intervals.
"Beep, beep, beep, beep"
Repeatedly blinks at about
1-second intervals.

Blinking
alarm LED
arrays

Display and pattern of man-down alarm
If an abnormality in the motion of the user is detected, the lamp blinks andalarms are triggered in a step-by-step manner: preliminary alarm 1, preliminary
alarm 2 and then main alarm while vibrating.
When a main alarm is triggered, the clock display on the LCD display shows[MAN DOWN].
The following shows the time to switch from a preliminary alarm to main
alarm.
•
Preliminary alarm 1: 60 seconds after detection•
Preliminary alarm 2: 75 seconds after detection•
Main alarm: 90 seconds after detection

NOTE
The preliminary alarms of man-down alarm are stopped and measurement state is resumed
when the motion of the user is detected.
To stop the main alarm of man-down alarm, press the RESET button.

- 28 -

5 How to Use

5-1. Before using the gas monitor

55

How to Use

5-1. Before using the gas monitor
Not only the first-time users but also the users who have already used the gas monitor must follow
the operating precautions.
Ignoring the precautions may damage the gas monitor, resulting in inaccurate gas detection.

5-2. Preparation for start-up
CAUTION
The display is covered by the protective film to prevent scratches from shipping.
Be sure to remove this film before use.
Gas monitor with this film will not satisfy the explosion-proof performance.

Before starting gas detection, check the followings.
• Check that the protective film attached on the display from shipping is removed.
• Check that the battery level is sufficient• Check that the taper nozzle is not bent or has no hole
• Check that the filter inside the gas monitor is not contaminated or clogged• Check that the main unit and taper nozzle are connected properly

5-2-1. Charging and attaching lithium ion battery unit (BUL6000)
Charge with the provided charger according to the following procedure when the gas monitor is used forthe first time or the battery level of the rechargeable battery in the lithium ion battery unit is low.

DANGER
Replace the lithium ion battery unit in a safe place.
Charge the battery unit using the provided charger in a safe place.
Charge the battery unit at ambient temperatures between 0 - +40 ºC.
The specifications of this unit are as follows:
Maximum voltage: 4.2 V, Ambient temperature: -20 - +50 ºC- 29 -

5 How to Use

5-2. Preparation for start-up

CAUTION
Do not use the gas monitor while charging it. Correct measurements cannot be obtained.
Furthermore, the rechargeable batteries get deteriorated more quickly and may have shorter life.
Do not charge the batteries while the gas monitor is wet. The charger is neither water-proof nor
dust-proof.
The charger is not explosion-proof.
After attaching the lithium ion battery unit, lock the battery cover completely. If the battery cover
is not completely locked, the battery unit may drop off or water may get in through the clearance.
Do not damage the rubber seal.
To maintain the water-proof and dust-proof performances, it is recommended to replace therubber seal every two years, whether or not it has an abnormality.

<Charging Lithium Ion Battery>1

Insert the DC plug of the AC
adapter into the DC jack of thecharger.
Lay the DC plug cord along the sidethrough the notch at the bottom of
the charger.

2

Insert the AC adapter to theoutlet.

3

Insert the main unit to thecharger straight from above.
When the charger is connected, thecharging indicator lamp lights up in
red. (Full charge requires about
three hours at maximum.)
When charging is completed, thecharging indicator lamp goes off.
Charging indicator lamp

4

When charging is completed,disconnect the AC plug fromthe outlet.

- 30 -

5 How to Use

5-2. Preparation for start-up<Removing/Attaching Lithium Ion Battery Unit>
1

Check that the power of thegas monitor is turned off.
If the power is on, press the
POWER/ENTER button to turn it off.

2

Slide the battery unit release
lever to the right side andpush it.

Slide the battery unit release
lever to the right side.

3

Remove the lithium ion
battery unit from the main
unit.

CAUTION
Disconnect the AC plug from the outlet while it is not in use.

NOTE
When attaching the battery unit, be sure that the battery unit
release lever is locked.
If it is not completely locked, the battery unit may come off orwater may get in through the clearance. Water may also get in if
a minute foreign substance is caught beneath the battery unit.
During charging, the lithium ion battery unit may get hot, but thisis not an abnormality.
Charging causes the main unit temperature to increase. Whencharging is completed, leave it for at least ten minutes before
use. If the gas monitor is used while it is still hot, correct
measurement may not be performed.
Fully charged battery cannot be recharged.
It is possible to charge the lithium ion battery unit alone after
removing it from the main unit.

- 31 -Push5 How to Use

5-2. Preparation for start-up

5-2-2. Attaching dry battery unit and replacing dry
battery(BUD-6000)
When the optional dry battery unit is attached instead of lithium ion battery unit, three AA alkaline batteries
are used to operate the gas monitor.
When the dry battery unit is used for the first time, or when the battery level is low, replace or attach new
AA alkaline batteries according to the following procedure.

DANGER
Replace the dry battery unit in a safe place.
Replace the batteries in a safe place.
The specifications of this unit are as follows:
Maximum voltage: 4.95 V, Power: Alkaline AA batteries, type LR6 manufactured by Toshiba, 1.5
VDC x 3, Ambient temperature: -20 - +50 ºC

CAUTION
Turn off the power of the gas monitor before replacing the batteries.
Replace the batteries in a safe place where explosive gases are not present.
Replace all of the three batteries with new ones at one time.
Pay attention to the polarities of the batteries when attaching them.
After attaching the batteries, lock the battery cover completely. If the battery cover is notcompletely locked, the dry batteries may drop off or water may get in through the clearance.
Water may also get in if a minute foreign substance is caught beneath the battery cover.

<Removing/Attaching Dry Battery Unit>
1

Check that the power of thegas monitor is turned off.
If the power is on, press the
POWER/ENTER button to turn it off.

2

Slide the battery unit release
lever to the right side andpush it.

Slide the battery unit release
lever to the right side.

3

Remove the dry battery unit
from the main unit.

- 32 -Push5 How to Use

5-2. Preparation for start-up

NOTE
When attaching the battery unit, be sure that the battery unit
release lever is locked.
If it is not completely locked, the battery unit may come off orwater may get in through the clearance. Water may also get in
if a minute foreign substance is caught beneath the battery
unit.

<Replacing Dry Batteries>
1

Release the lock plate of thebattery cover.

Battery cover

Lock plate

2

Open the battery cover.

3

Put new batteries paying
attention to the polarities.
Remove old batteries as needed.

4

Close the battery cover andlock plate.
Close the lock plate securely until itclicks.

- 33 -

5 How to Use

5-2. Preparation for start-up

5-2-3. Attaching taper nozzle
To perform measurement, attach the taper nozzle to
the gas inlet of the gas monitor.

DANGER
Do not use the taper nozzles not specified by RIKEN KEIKI or other parts for the gas monitor.

5-2-4. Attaching Pre-Filter Tube(CF-8338) and Tube holder(GF-284) (optional)(only for the specification with VOC<10.0eV> sensor)

GX-6000 with VOC<10.0eV> sensor can measure Benzene concentration in Benzene Select Mode.
In Benzene Select Mode, attach Pre-Filter Tube(CF-8338) and Tube holder(GF-284)(optional) according
the following procedure.

WARNING
Carefully read the instruction manual of the PID-Pre-Filtre Tube(CF-8338) before use.

1

Break off both ends of PreFilter Tube(CF-8338) with the
tube-cutter.

Pre-Filter Tube

Insert the end of the Pre-Filtre Tube
to the tube-cutter and totate by 360
degrees to score the tube.
Hold the base od the tube and pull it
toward you.

2

Tube-cutter(knurld screw)
Tube holder

Remove the cap of the tube
holder pushing the tab of the
cap.

Cap
Tab

- 34 -

5 How to Use

3

Insert the tube to the cap of
the tube holder.

5-2. Preparation for start-up<Correct use>
Shadow area is hided.

Insert the tube not to see theshadow area of the tube’s label.

<Incorrect use>
Shadow area is not
hided.

shadow area4

Connect the cap to the tube
holder.
Insert the cap until it clicks.

5

Connect the tube holder to
GX-6000.
Connect the tube to the gas inlet
in the following order: the gas
inlet, the tube holder and then
the taper nozzle.

- 35 -

5 How to Use

5-2. Preparation for start-up

WARNINGIn the low-temperature envitronment, the rubber seal is so hard that it is difficult to insert the tube
to the tube holder. Prepare in the room-temperature environment and use the gas monitor in as
short time as possible.
Set the CAL code before use the gas monitor in Benzene Select Mode. See 'Set the CAL code of
the Pre-Filter Tube' (P.45) for setting the CAL code.

NOTE
Connect the gas sampling hose(option) to the gas inlet in the following order: the gas inlet, the gas
sampling hose, the tube holder and then the taper nozzle.

Remove Tube-cutter
Remove the tube-cutter from the tube holder and dispose the tip of the tube cutted with the tube-cutter
after use.
Rubber cup
Tube-cutter (knurled screw)

Tube holder

Turn tube-cutter (knurled screw)
to fix. (screw fixing)

To avoid the possibility of glass fragments inside the rubber cap
should be placed firmly over the tube cutter all the way to the back.

- 36 -

5 How to Use

5-3. How to start the gas monitor

5-3. How to start the gas monitor
When the power is turned on, various settings including date and alarm setpoint are displayed and thenthe measurement screen is displayed in the normal mode.

Power-on
Hold down the POWER/ENTER button (overfive seconds) until the buzzer blips.
Power is turned on.

The entire LCD display lights up.

NOTE
The gas monitor is equipped with leak check mode as well as normal mode. The leak check mode,
however, is set to OFF normally and thus unavailable. To use this function, please contact RIKEN
KEIKI.
When the power is turned on with the leak checkmode set to ON, the screen for selecting thenormal mode or leak check mode is displayed
after the entire LCD display lights up. Select themode with the / button and press the
ENTER button to confirm it.

(Normal Mode)- 37 -(Leak check mode)5 How to Use

5-3. How to start the gas monitor

Screen transition from selecting normal mode to displaying
measurement screen
When the power is turned on, the LCD display changes automatically as shown below before themeasurement screen is displayed.

The buzzer blips twice
and then themeasurement screen isdisplayed.
- 38 -

5 How to Use

5-3. How to start the gas monitor

CAUTION
After start-up, perform air calibration (P. 40) before performing gas detection.

NOTE
If any abnormality is detected in the sensor, [FAIL] is displayed in place of measured value justbefore entering the measurement screen and a sensor abnormality alarm is triggered. In this case,press the RESET button to temporarily reset the sensor abnormality alarm. However, the alarmcannot be reset if there is an abnormality in all the sensors. After the alarm is reset, [- - - -] appears
in the concentration display area of the gas with sensor abnormality. Detection of the gas having
sensor abnormality will become unavailable. Promptly contact RIKEN KEIKI.
If there is an abnormality in the built-in clock, a fault alarm FAIL CLOCK may be triggered. Press
the RESET button in this case. The fault alarm is temporarily reset, and measurement is started
with incorrect clock time.
WARM-UP
Displays the WARM-UP screen.
DATE
Displays a year/month/day and time. The date/time and display type can be set in the user mode
(P. 78).
BATTERY
Displays the battery level (voltage) in the upper section of the screen.
Displays the used battery (lithium ion or dry battery) in the center of the screen.
Displays the gas alarm pattern setting (LATCHING <self-latching>) in the lower section of thescreen.
GAS
Displays the gas name of detection target. Detection principles are indicated by the following
symbols when the smart sensor is installed.
SymbolP○

Gas to be detected

Detection principle

Volatile organic compound (VOC)

Photoionization type

Sulfur dioxide (SO2)
Nitrogen dioxide (NO2)
Hydrogencyanide (HCN)E○Electrochemical type
Ammonia(NH3)
Chlorine(Cl2)
Phosphine(PH3)
Carbon dioxide (CO2) <vol%>Carbon dioxide (CO2) <ppm>
Non-dispersive infrared typeCombustible gas (HC) <%LEL/vol%>Combustible gas (CH4) <%LEL/vol%>GAS SMART 1/GAS SMART 2
For the specification targeting volatile organic compound (VOC) for detection, isobutylene or a gas
name set for reading is displayed. See 'VOC reading setting' (P. 64) for the reading setting.
F.S.
Displays the full scale value of the gas to be detected.
AL1
Displays the first alarm setpoint of the gas to be detected.
AL2
Displays the second alarm setpoint of the gas to be detected.
STEL
Displays the STEL alarm setpoint of the gas to be detected. A STEL value refers to a concentrationof toxic substances which does not have harmful effects on the users' health by 15-minutecontinuous exposure provided that everyday exposure does not exceed TWA value.
TWA
Displays the TWA alarm setpoint of the gas to be detected. A TWA value refers to a time weighted
average concentration of toxic substances which is considered no harm on almost all the users'
health by repeated exposure at regular work of eight hours a day or 40 hours a week.
- 39 -

5 How to Use

5-4. Air calibration

5-4. Air calibration
Air calibration is zero adjustment to correctly measure the current gas concentration.

CAUTION
After start-up, perform air calibration before performing gas detection.

Attaching the CO2 removal filter (CF-284) (only for the
specification targeting CO2 for detection)
To perform air calibration for the specification targeting CO2 for detection, CO2 in the air needs to be
removed using the CO2 removal filter (CF-284).

WARNINGTo use the specification targeting VOC and CO2 for detection, use the CO2 removal filter andthe activated carbon filter to perform air calibration.Connect the filters to the gas inlet in thefollowing order: the gas inlet, the activated carbon filter and then the CO2 removal filter.
Remove the black tube from the the gray tube and attach the filter so that the arrow (→) on the side is
directed at the gas inlet. Stand the CO2 removal filter to use. With it laid horizontally, CO2 in the air may
not be absorbed.
Direct the arrow at the gas inlet.

CO2 removal filter Correct use

CO2 removal filter Incorrect use

CO2 removal filter

With the CO2 removal filter laid
horizontally, air passes through the shaded
area and CO2 cannot be absorbed.

Stand the CO2
removal filter to use.

Filter tube
CO2 removal filter- 40 -

Filter tube

5 How to Use

5-4. Air calibration

The number of usable times per filter depends on the carbon dioxide concentration in the air. It varies also
by the air tightness of CO2 removal filter, storage temperature or humidity.
The following table shows guide values assuming that each use takes one minute for drawing. However,
use the removal filter with a margin when the carbon dioxide concentration in the environment is unknown.
Measurement
environment
carbon dioxide (CO2)concentration
500 ppm1000 ppm
2000 ppm
4000 ppm

Estimated number of usable times
in consideration of storage
condition
Approx. 1000 times
Approx. 500 times
Approx. 200 times
Approx. 100 times

CAUTION
Stand the CO2 removal filter to use. With it laid horizontally, CO2 in the air may not be
absorbed.
Perform air calibration after sampling fresh air for 1 minute.
Do not draw high-concentration carbon dioxide during zero calibration.
Do not breathe on the inlet during zero calibration.
Block ventilation to the air after using the CO2 removal filter. With the air mixed, the absorbent
absorbs carbon dioxide in the air, resulting in degraded absorption performance.
Store the CO2 removal filter in a dry place away from direct sunlight.

NOTE
The number of usable times per filter depends on the carbon dioxide concentration in the air. It
varies also by the air tightness of CO2 removal filter, storage temperature or humidity.
The above table shows guide values assuming that each use takes one minute for drawing.
However, use the removal filter with a margin when the carbon dioxide concentration in theenvironment is unknown.

Attaching the activated carbon filter (only for the
specification targeting VOC for detection)
To perform air calibration for the specification targeting VOC for detection, VOC in the air needs to be
removed using the activated carbon filter.
The appropriate carbon filter model varies depending on CO2 sensor.
CO2 sensor
Model of the activated carbon filter
Without CO2 sensor

CF-8350

With CO2 sensor

CF-8501- 41 -

Appearance

5 How to Use

5-4. Air calibration

Remove the caps from the both side of the filter and attach the filter so that the arrow (→) on the side is
directed at the gas inlet.

Example) CF-8350
Direct the arrow at the gas inlet.

WARNINGTo use the specification targeting VOC and CO2 for detection, use the CO2 removal filter andthe activated carbon filter to perform air calibration.Connect the filters to the gas inlet in thefollowing order: the gas inlet, the activated carbon filter and then the CO2 removal filter.

CAUTION
If an instrument include CO2 sensor, CO2 reading may temporarily increase when attaching theactivated carbon filter. Perform air calibration after sampling fresh air for 2 minute.
Attachthe caps and block ventilation to the air after using the activated carbon filter.

- 42 -

5 How to Use

5-4. Air calibration

Air calibration procedure1

Hold down the AIR button on themeasurement screen.

The air calibration screen is displayed.

Keep the AIR button pressed while the screen
shown in the right figure is displayed.
Zero adjustment is not performed when the button isreleased before the screen is displayed.

2

Release the AIR button when the screen
shown in the right figure is displayed.

When zero adjustment is completed, the screen
shown in the right figure is displayed.

- 43 -

5 How to Use

5-4. Air calibration

When zero adjustment is successfully completed,the measurement screen returns automatically.

WARNING
When air calibration is performed in the atmosphere, check the atmosphere for freshness before
beginning it. If interference gases exist, zero adjustment cannot be performed properly, thus
leading to dangers when the gas leaks.
When air calibrationis performed in the atmosphere for the specification targeting VOC for
detection, use the activated carbon filter (CF-8350 or CF-8501).
When air calibrationis performed in the atmosphere for the specification targeting CO2 fordetection, use the CO2 removal filter (CF-284).
When air calibrationis performed in the atmosphere for the specification targeting VOC and CO2
for detection, connect the activated carbon filter and the CO2 removal filter to the gas inlet in thefollowing order: the gas inlet, the CO2 removal filter and then the activated carbon filter.
.

CAUTION
Perform air calibration under pressure and temperature/humidity conditions close to those in theoperating environment and in fresh air.
Perform air calibration after the reading is stabilized.
If there is a sudden temperature change of 15 ºC or more between the storage and operational
locations turn on the power of the gas monitor, let it stand for about 10 minutes in a similar
environment to the operational location, and perform air calibration in fresh air before using it.

NOTE
When air calibration fails, [FAIL] appears in the concentration display area of the faulty sensor aswell as [SENSOR]. Press the RESET button to reset the fault alarm (calibration failure). When thealarm is reset, the value before calibration is displayed.

- 44 -

5 How to Use

5-5. Setting the CAL CODE of the Pre-Filter Tube(Only for the specification with VOC<10.0eV>sensor)

5-5. Setting the CAL CODE of the Pre-Filter Tube(Only forthe specification with VOC<10.0eV>sensor)

Set a CAL code of the Pre-Filter Tube(CF-8338) before use. The CAL code is listed on the shipping boxof the Pre-Filter Tube.

PID-Pre-Filter
Tube
Benzene(10 Tubes)
ベンゼン（10 回分）Store in a cool and dark place.
冷暗所保管（0～25℃）
Expires End of Nov, 2019
有効期限 2019 年 11 月

CAL CODE Example：B

CAL CODE ：B
校正コード：B
MODEL CF-8338
Lot No.17Y001
Made in Japan

1

With the measurement screen
displayed in the normal mode,press the DISP button and SHIFT
buttons at the same time.

CAL

CAL
さ MODE> AIR CALAUTO CALSINGLE CAL
TUBE CALCAL CODEESCAPEThe CAL mode screen is displayed.

2

In the CAL mode, select [CAL
CODE] with the ▲/▼ button andthen press the ENTER button.

CAL

GAS CALIBRATION
AIR CAL
AUTO CALSINGLE CAL
TUBE CAL> CAL CODEESCAPE- 45 -

5 How to Use

35-5. Setting the CAL CODE of the Pre-Filter Tube(Only for the specification with VOC<10.0eV>sensor)

Select the CAL CODE of the PreFilter Tube listed on the shipping
box with the ▲/▼ button.

CAL CODEGAS
さ CALIBRATIONINPUTCAL CODE

4

Press the ENTER button to confirm
it.
The CAL mode menu returns after
setting the CAL CODE.

ACAL CODEGAS
さ CALIBRATION
END- 46 -

5 How to Use

5-6. How to detect

5-6. How to detect
DANGER
While conducting measurement in a manhole or confined space, do not lean over or look into the
manhole or closed space. It may lead to dangers because oxygen-deficient air or other gases
may blow out.
Oxygen-deficient air or other gases may be discharged from the gas exhausting outlet of the gas
monitor. Never inhale the air or gases.
High-concentration (100 %LEL or higher) gases may be discharged from the gas exhaustingoutlet of the gas monitor. Never use fire near it.

WARNINGThe gas monitor is designed to draw gases around it under the atmospheric pressure. If
excessive pressure is applied to the gas inlet and outlet of the gas monitor, detected gases mayleak out from its inside and may cause dangerous conditions. Be sure that excessive pressure is
not applied to them while used.
Do not connect the taper nozzle directly to a detection area with a pressure higher than theatmospheric pressure. The internal piping system may be damaged.
When air calibration is performed in the atmosphere, check the atmosphere for freshness before
beginning it. If interference gases exist, the calibration cannot be performed properly, thus
leading to dangers when the gas leaks.
Issuance of a gas alarm indicates that there are extreme dangers. Take proper actions based onyour judgment.
Gas detection cannot be performed with a low battery voltage. If the low battery voltage alarm istriggered during use, turn off the power and promptly charge or replace the batteries in a safe
place.
Do not block the buzzer sound opening. No alarm sound can be heard.

- 47 -

5 How to Use

5-6. How to detect

5-6-1. Basic operating procedures<Normal Mode>
This mode is used on the measurement screen after power-on.
<DISP Mode>PID SET TO
Isobutylene<Measurement Screen>
CHANGE：ENTER
KEEP：DISPEXIT：RESET<Gas Alarm State><Air Calibration>Long press(Self-latching <Reset after
recovery to normal state><Manual Memory><Fault Alarm State>(Self-latching <Reset after recovery to normal state>)

NOTE
Only GX-6000 with the VOC<10.0eV> sensor can entrer the Benzene Select mode through the
DISP mode.

- 48 -

5 How to Use

5-6. How to detect<Leak Check Mode>
The gas monitor is equipped with leak check mode as well as normal mode. The leak check mode,
however, is set to OFF normally and thus unavailable. To use this function, please contact RIKEN
KEIKI.
With the leak check mode set to ON, the mode selection screen is displayed after power-on. Whenthe leak check mode is selected, the following screen transition is made.

(Normal mode)(Leak check mode)<Air Calibration><Leak Check Screen>Long press<Peak Hold Mode><Manual Memory>

NOTE
In the leak check mode, a full scale value can be selected from four levels: 500 ppm, 1000 ppm,
2000 ppm and 5000 ppm. The value switches to another every time the DISP button is pressed.
The buzzer sounds intermittently according to the gas concentration. As the concentration becomes
higher, the interval of beeps of the buzzer becomes shorter.
For the specification targeting carbon monoxide (CO) for detection, the PEAK value and carbon
monoxide (CO) concentration can be set so that they are displayed alternately every time the
RESET button is pressed. Contact RIKEN KEIKI for the setting.

- 49 -

5 How to Use

5-6. How to detect

5-6-2. Normal Mode / Leak Check Mode
With the measurement screen displayed, put the taper nozzle close to the detection area and read thevalue on the LCD display.
<Normal Mode>
Combustible gas(%LEL)

OxygenHydrogen sulfide

Carbon monoxide

Gas concentration
detected by the smart
sensor

Gas concentration
detected by the smart
sensor

Display example<Leak Check Mode>
The gas monitor is equipped with leak check mode as well as normal mode for the combstible gas using
the new ceramic sensor. The leak check mode, however, is set to OFF normally and thus unavailable. To
use this function, please contact RIKEN KEIKI.

Gas concentration : 2500 ppm

Full scale value: 5000 ppm

Indicate gas
concentration
with bar- 50 -

5 How to Use

5-6. How to detect

CAUTION
When measuring concentrations of oxygen in inert gases for a long time, the carbon dioxide
concentration in the air must be 15 % or less. When the gas monitor is used in the inert gas witha carbon dioxide concentration higher than 15 %, perform measurement in as short time as
possible. Using the gas monitor under high concentrations for a long time may shorten the life of
the oxygen sensor.
Some sensors will respond to a gas other than their target gas. The table below indicates someof the gases that will cause an increased reading for the affected sensor. For example, if you
are attempting to detect HCN and H2S is also present, the instrument’s HCN reading will behigher than the environment’s actual HCN level.
Examples of interference gases that cause increased readings
Principle of sensor usedin GX-6000 (Target gas)Interference gas／

Electrochemical(HCN)H2S／Electrochemical(HCN)SO2／Electrochemical(HCN)C2H2／Electrochemical(SO2)H2／COElectrochemical(SO2)／Electrochemical(CO)H2／SO2Electrochemical(Cl2)／Electrochemical(Cl2)
HCl
／
SO2
Electrochemical(PH3)／HCNElectrochemical(PH3)／
H2S
Electrochemical(PH3)／
New ceramic (HC/CH4)
Combustible gases／
Hydrocarbon gases of combustible gases
Non-dispersive infrared type(HC/CH4)／VOC
PID (VOC)／
Some toxic sensors will respond negatively to some gases that may be present along with thetarget gas. The table below indicates some of the gases that will cause a negative response
and a decreased reading for the affected sensor.
Examples of interference gases that cause decreased readings
Principle of sensor usedin GX-6000 (Target gas)／Interference gas

NO2Electrochemical(H2S)／
NO2Electrochemical(HCN)／Electrochemical(NO2)
SO2／Electrochemical(SO2)
NO2
／
H2S
Electrochemical(NH3)／Electrochemical(PH3)
NO2／
Exposing the new ceramic combustible sensor to silicone, halogen gases, or sulfides may
shorten the sensor’s life or cause malfunctions or inaccurate gas readings. Minimize thesensor’s exposure to these gases as much as possible. If exposure occurs, allow the instrument
to draw fresh air and confirm that the readings return to fresh air values.
Exposing the galvanic oxygen sensor to halogen gas or sulfides may shorten the sensor’s life orcause malfunctions or inaccurate gas readings. Minimize the sensor’s exposure to these gases
as much as possible. If exposure occurs, allow the instrument to draw fresh air and confirm thatthe readings return to fresh air values.
An oxygen concentration higher than a certain level is required for the new ceramic combustible
gas sensor <%LEL> of the gas monitor to correctly detect gases and display concentrations.
When measuring concentrations of oxygen in inert gases for a long time, the carbon dioxide
concentration in the air must be 15 % or less. When the gas monitor is used in the inert gas witha carbon dioxide concentration higher than 15 %, perform measurement in as short time as
possible. Using the gas monitor under high concentrations for a long time may shorten the life of
the oxygen sensor.
- 51 -

5 How to Use

5-6. How to detect

CAUTION
The CO reading on GX-6000 may increase after being exposed to high concentration of VOC
gases. If the reading is not returned to zero, the charcoal filter for CO sensor is required.
Contact RIKEN KEIKI for the filter replacement.
Long-time detection of a high-concentration combustible gas may adversely influence the
combustible gas sensor <%LEL>. If presence of high-concentration combustible gas in ameasurement location is known in advance, set the combustible gas sensor <%LEL> protection
setting (P. 73) to ON before use.
The gas sampling hose may absorb a small amount of several of the GX-6000’s target gases,
such as toxic gases, solvents, or VOCs. This absorption causes the target gas reading on the
GX-6000 to be lower than the sampled environment’s actual gas level.
If gases that are easily absorbed by the gas sampling hose are encountered, be sure to allow
the instrument to draw fresh air through the gas sampling hose until the affected reading returns
to a fresh air value.
When the gas sampling hose is not being used, its outgassing characteristics may result in asmall buildup of gas to which the VOC sensor will respond. If a sampling hose has been sitting
unused for a period of time, when that gas sampling hose is connected to a GX-6000, the VOC
channel may temporarily show a reading. The reading will return to a fresh air reading after allof the built up gas has been drawn out of the gas sampling hose.
Be careful when measuring concentrations of Cl2 and NH3 at a lower limit of operating
temperature (around -20 ºC), the response time to the gas may slow down due to the gas
characteristic.
When high concentrations of methane gas, ethane gas, propane gas, etc. are present, the PID
type VOC sensor may display "----" in the concentration display section, the lamp may blink, thebuzzer may sound, and measurement may become temporarily impossible.
Note that in an environment where these gases are present, even if "----" is not displayed on theconcentration display, the VOC concentration may not be measured correctly. Note that even if"----" is displayed in the concentration display section of the VOC sensor, sensors that are notaffected by anything other than the VOC sensor can continue to measure.
Example of interfering gas where "----" is displayed in the concentration
display section of a PID type VOC sensor
Interference gas／

MethaneEthanePropane／／／Gas concentration

6vol%
80vol%
90vol%

5-6-3. Benzene Select Mode (only for the specification with
the VOC<10.0eV>) sensor)
With the measurement screen displayed in Benzene Select mode, put the taper nozzle close to thedetection area and read the value on the LCD display.
BNZ

TUBE

5.20
REPEAT?

ppm

YES ENTERNO DISPSTEL RESET- 52 -

Benzene5 How to Use

5-6. How to detect

CAUTION
Measurement time is determined by temperature automatically. Read the value after themeasurement time. See 'Change to the Benzene Select Mode' (P.59).
Only VOC<10.0eV> sensor is active in Benzene Select Mode and no gas alarm is triggered.

NOTE
In a low-temperature environment, the operating time is shortened due to the battery performance
property.
At low temperatures, the responses of the LCD display may slow down.
If a combustible gas with 100 %LEL or higher concentration is drawn, some adsorbed gas may
remain in the taper nozzle or filter. After drawing a high-concentration combustible gas, be sure to
draw in fresh air and perform the air clening until the reading indicates zero to remove adsorbed
gases. Performing fresh air calibration before cleaning completely may result in inaccurate
adjustment, giving adverse influence on measurement.
The display automatically switches to the vol% range when the concentration of a combustible gas
exceeds 100 %LEL, which detected by Non-dispersive infrared type sensor. When the concentration
drops, the display returns to the %LEL range again. The following shows an example of switching
timing.
Diagram example of gas concentrations and range switching timing
HC /CH4
concentration

100 %LEL(HC: 1.8 vol%)(CH4: 5.0 vol%)%LEL range

vol% range

Switching point%LEL range

Switching point* HC: Isobutane converted.
CH4: Methane
The range switching point is a lower explosive limit of a gas. It is 1.8 vol% for isobutane and5.0 vol% for methane.

- 53 -

5 How to Use

5-6. How to detect

5-6-4. Manual memory
Up to 256 arbitrary instantaneous values during measurement can be recorded.
When the number of recorded data points reaches the maximum, recorded data will be overwritten,
starting from the oldest data.

1

Hold down theandbuttons at the sametime on the measurement screen.
The memory number, station ID, recorded date andrecorded concentration are displayed in turn as
shown below.

2

Press the ENTER button.
[SAVED] is displayed on the screen, and thememory number, station ID, date and gas
concentration at the time the ENTER button ispressed are recorded.
After recording, the data from memory number torecorded concentration are displayed again in turn.
To continue recording the data, press the ENTER
button.

3

Press the DISP button to end.
The measurement screen returns.

NOTE
The gas concentration data recorded by manual memory can be viewed according to 'Log data
display' (P. 71).

- 54 -

5 How to Use

5-7. Power-off

5-7. Power-off
CAUTION
If the concentration display is not reset to zero (or 20.9 % for the oxygen concentration display)after measurement is completed, leave the gas monitor in fresh air until the display returns tozero and then turn off the power.

Keep the POWER/ENTER button pressed.
To turn off the power, hold down the POWER/ENTER button
after the display returns to zero (0, or 20.9 % for oxygen) in asafe place.

The buzzer blips three times and ［TURN OFF］ appears on
the display before the power is turned off.

Power-offNOTE
To turn off the power, keep the button pressed until the display disappears.

CAUTION
When the gas monitor is contaminated, clean it with a waste cloth, etc.
When cleaning the gas monitor, do not use organic solvents such as alcohol and benzine on it.

- 55 -

6 Setting Procedure

6-1. Display setting (DISP mode) flow

6
6

Setting Procedure

6-1. Display setting (DISP mode) flow
The DISP mode allows users to view and change various display settings.

Press the DISP button on the measurement screen
in normal mode.
Various screens are displayed in turn by pressing the DISP
button.

Press the DISP button when settings arecompleted.
The previous screen returns. Press the button several times
more to call the measurement screen.

Press the RESET button to return to the themeasurement screen.
Press the RESET button in each screen to return to the themeasurement screen.
Item
Change to Benzene
Select Mode
(Displayed only forthe specification with
VOC<10.0eV> sensor)

VOC reading setting(Displayed only forthe specification with
VOC<10.0eV>sensor)

Details

LCD display

Remarks

Changes to Benzene SelectMode from Normal Mode.
In Benzene Select Mode,measure Benzene with the
Pre-Filter Tube (CF-8338).

DISP
BENZENE SELECT

Press the ENTER
button to go to thesetting screen(P. 61)

By changing the setting to
the pre-registered gas in thegas monitor, the converted
concentration from thedetection target gas(isobutylene) of VOC<10.0eV> sensor will be
displayed.

- 56 -

YES：ENTER
NO：DISPEXIT：RESETPID SET TO
Isobutylene
10.0eVCHANGE：ENTER
KEEP：DISPEXIT：RESET

Press the ENTER
button to go to thesetting screen(P.64)

6 Setting Procedure
VOC reading setting(Displayed only forthe specification with
VOC <10.6eV/ppb>
sensor and VOC<10.6eV/ppm>sensor)

6-1. Display setting (DISP mode) flow
By changing the setting to
the pre-registered gas in thegas monitor, the converted
concentration from thedetection target gas(isobutylene) of VOC<10.6eV/ppb > sensor and
VOC <10.6eV/ppm> sensor
will be displayed.

PEAK display/clear

Displays the maximum
concentration of gas (orminimum concentration foroxygen) detected frompower-on to the present.

STEL value display

Displays the STEL value
after power-on.

TWA value display

Displays the TWA value after
power-on.

Full scale/alarm setpoint
display/
alarm test

Displays the full scale andalarm setpoint values andallows users to check thealarm activation of thesetting displayed.

- 57 -PID SET TO
Isobutylene
10.6eV

Press the ENTER
button to go to thesetting screen(P.64)

CHANGE：ENTER
KEEP：DISPEXIT：RESET

Go to the PEAK
display/clear
screen(P. 66)

Press the ENTER
button to go to theconfirmation screen(P. 67)
YES：ENTER
NO：DISPEXIT：RESET

6 Setting Procedure

6-1. Display setting (DISP mode) flow

Measurement time
display

Displays the measurement
time from power-on.

Date/voltage display

Displays a date and time,
battery level and battery
type.

Data logger remaining
time display

Displays the remaining time
which data logger canrecord.

Clear log data

Clears the data recorded in
the manual memory.

Press the ENTER
button to go to theclear screen(P. 68)
YES：ENTER
NO：DISPEXIT：RESET

User ID
display/selection

Displays user ID and allows
users to select it.

- 58 -

Press the ENTER
button to go to thedisplay/selection
screen(P. 69)

6 Setting Procedure

6-1. Display setting (DISP mode) flow

Station ID
display/selection

Displays station ID andallows users to select it.

Press the ENTER
button to go to thedisplay/selection
screen(P. 70)

Log data display

Displays data recorded in
the manual memory.

Press the ENTER
button to go to thedisplay screen(P. 71)
YES：ENTER
NO：DISPEXIT：RESET

Peak display setting

Gas concentration
display setting

LCD inversion setting

Used to set peak display sothat a peak value blinks on
the bar displayed on theright side of gas
concentration on themeasurement screen.

Used to set themeasurement screen to split
display to six divisions or
single display.
When the single display is
selected, automatic or
manual switching of display
can be set.

Press the ENTER
button to go to thesetting screen(P. 72)
YES：ENTER
NO：DISPEXIT：RESET

Press the ENTER
button to go to thesetting screen(P. 73)
YES：ENTER
NO：DISPEXIT：RESET

Used to invert the LCD
display by 180 degrees
according to the direction of
the gas monitor.

Press the ENTER
button to go to thesetting screen(P. 74)
YES：ENTER
NO：DISPEXIT：RESET- 59 -

6 Setting Procedure
Combustible gas
sensor <%LEL>
protection setting

6-1. Display setting (DISP mode) flow
Protects the combustible
gas sensor <%LEL> fromhigh-concentration
combustible gases.

()

Press the ENTER
button to go to thesetting screen(P. 75)(Displayed only forthe specification
targeting combustiblegas <%LEL> fordetection)

LCD black and white
inversion setting

Used to invert the black andwhite display of LCD.

Press the ENTER
button to go to thesetting screen(P. 76)
YES：ENTER
NO：DISPEXIT：RESETEnglish display
setting

Used to resume English
display when anotherlanguage is set.

(Displayed only whenselecting languages
other than English)

LANGUAGE
CHANGETO ENGLISH

Press the ENTER
button to go to thesetting screen(P. 77)

YES：ENTER
NO：DISPEXIT：RESET

NOTE
If the screen is left unoperated for 20 seconds, the measurement screen returns.
Press the RESET button in each screen to return to the the measurement screen.
Pressing the DISP button on the English display setting screen returns to the measurement screen.

- 60 -

6 Setting Procedure

6-2. Display setting

6-2. Display setting
Change to Benzene Select Mode

(only for the specification with VOC<10.0eV> sensor)
This item is used to change to Benzene Select Mode from Normal Mode. In Benzene Select Mode,measure Benzene with the Pre-Filter Tube and Tube holder (optional). See 'Attaching Pre-Filter Tube (CF8338) and Tube holder (GF-284)(optional)' (P.34).

1

Press the DISP button to display thescreen shown in the right figure, andthen press the ENTER button.

DISP
BENZENE SELECTYES：ENTER
NO：DISPEXIT：RESET

2

Attach the Pre-Filter Tube (CF-8338)
and Tube holder (GF-284) (optional),
and then press the ENTER button.

TUBE
BENZENE SELECTINSTALL TUBEAND HOLDER

Pump and Data logger stop.

YES：ENTER
NO：DISP

3

Press the ENTER button.

TUBE
BENZENE SELECTSTARTMEASUREMENT

Press the ENTER button to startmeasurement.
Press the DISP button to return to theNormal Mode. [REMOVE HOLDER] display
is shown, and then press the ENTER button.

YES：ENTER
NO：DISP

Pump starts, and then measurement starts.
Countdown is shown in the display.
Measurement time varies depending on
temperature. See the following list about themeasurement time.
The number in the list is shown in the bottom
left corner of the display.

4.80

EXIT：RESET
1.
2.
3.

-20.0
-10.0
0.0

-

-10.1 °C
-0.1 °C+9.9 °C:135 seconds:110 seconds: 90 seconds

5- 61 -45SEC

REMOVE HOLDER
YES：ENTER
NO：DISPTUBE
BENZENE SELECTBNZMEASURINGTUBE
BENZENE SELECT

ppm

TUBE
BENZENE SELECT
BNZ

4.80

CANCEL?
YES：ENTER
NO：DISP
5 44SECppm

6 Setting Procedure
4.
5.
6.

+10.0
+20.0
+30.0

6-2. Display setting-+19.9 °C
+29.9 °C
+50.0 °C

: 70 seconds: 45 seconds: 35 seconds

After the countdown, the result of
measurement is displayed.
・To restart measurement：
Press the ENTER button.
Change the Pre-Filter Tube and press the
ENTER button.
⇒ Step 3 “START MEASUREMENT”
display
・To return to measurement mode in Normal
mode：
Press the DISP button.
⇒ Step 3 “REMOVE HOLDER” display
・To start STEL measurement:
Press the RESET button.
⇒ Step 4 “STAERT STELMEASUREMENT”

4

TUBE
BENZENE
SELECT
BNZ

5.20

ppm

REPEAT?
YES：ENTER
NO：DISP
STEL：RESET
0SEC

TUBE
BENZENE SELECTCHANGE TUBE
YES：ENTER
NO：DISPEXIT：RESET

Press the ENTER button.
TUBE
BENZENE SELECT
START STELMEASUREMENTSTEL measurement starts.

YES：ENTER
NO：DISP

900-second measurement time is shown inthe display and countdown starts.
To stop the procedure, press the RESET
button and press the ENTER button.

TUBE

TUBE

BENZENE
BNZ
STEL SELECTBENZENE
BNZ
STEL SELECT

0.00

ppm

5.20

ppm

STEL
MEASURERING
EXIT：RESET- 62 -

0.00

ppm

5.20

ppm

CANCEL?
YES：ENTER
NO：DISP

6 Setting Procedure
The result is displayed.
・To restart STEL measurement:
Press the ENTER button.
⇒ Step 3 [CHANGE TUBE] display
・To return to measurement mode in Normal
mode：
Press the DISP button⇒ Step 3 [REMOVE HOLDER] display

6-2. Display setting
TUBE
BENZENE
BNZ STEL SELECT

3.20

ppm

REPEAT?
YES：ENTER
NO：DISP- 63 -

6 Setting Procedure

6-2. Display setting

VOC reading setting (only for the specification targeting VOC for
detection)

Normally, a volatile organic compound (VOC) concentration is displayed after isobutylene conversion;
however, the reading can be converted to a pre-registered gas concentration.

1

2

Press theDISP button
to display
the screen
shown inthe right
figure, andthen press
the ENTER
button.

PID SET TO
Isobutylene
10.0eVPID SET TO
Isobutylene
10.6eVCHANGE：ENTER
KEEP：DISPEXIT：RESETCHANGE：ENTER
KEEP：DISPEXIT：RESETFor VOC<10.0eV>sensor

For VOC<10.6eV>sensor

Select withthe /button.
USER LIST
indicates a set
gas list, andRECENT
indicates a
recently
selected gas
list. Allgases aredisplayedfrom A to X.

3

Press theENTER
button.
Gas types are
displayed.
Press theDISP button
to return tothe step 2.

4

Press theENTER
button.
The name,chemicalformula,conversion
factor, etc. ofeach gas are
displayed.
- 64 -

6 Setting Procedure

6-2. Display setting

Press theDISP button
to return tothe step 3.

5

Press theENTER
button.
When thesetting iscompleted,the screen
shown in thestep 1 returns
automatically.

NOTE
When the specification with both VOC<10.0eV>sensor and VOC<10.6eV>sensor in one unit, itshow 10.0eV first and 10.6eV later. Set for each sensor.
The setting is retained after power-off.
Up to 30 frequently selected gas types can be registered in USER LIST.
The setting program for the list of gases for reading VOC (optional) is required to use USER LIST.
The history of selecting gas type from the list of all gases can be kept in RECENT (up to eighttypes).
See the appendix 'List of gases for reading VOC' (P. 121) for the gas types available for reading.

- 65 -

6 Setting Procedure

6-2. Display setting

PEAK display/clear
This item is used to display or clear the maximum concentration (or minimum concentration for oxygen)detected during measurement from power-on to the present.

1

Press the DISP button to display
the screen shown in the rightfigure.

2

Hold down the RESET button toclear PEAK value.

3

When [RELEASE] is displayed,
release the RESET button.

PEAK value has been cleared.
After PEAK value is cleared, the screen
shown in the step 1 returns automatically.

- 66 -

6 Setting Procedure

6-2. Display setting

Full scale/alarm setpoint display/alarm test
This item is used to display the full scale and alarm setpoint values and check the alarm activation of thesetting displayed.
Note that the LCD display is not changed during alarm test.

1

Press the DISP button to display thescreen shown in the right figure, andthen press the ENTER button.
YES：ENTER
NO：DISPEXIT：RESET

2

Press the ▲/▼ button to display thefull scale or alarm setpoint values.

Full scale display

Alarm 1 display

Alarm 2 display

TWA Value Display

3

Display a desired screen and press
the ENTER button.
The alarm LED arrays blink in red,allowing the user to check the alarm
activation of the screen displayed.

4

Press the ENTER button to stop thealarm activation.
To exit from the display and alarm test,
press the DISP button to return to thescreen shown in the step 1.

- 67 -STEL Value Display

6 Setting Procedure

6-2. Display setting

Clear log data
This item is used to clear the log data recorded in the manual memory.

1

Press the DISP button to display
the screen shown in the rightfigure, and then press the ENTER
button.
YES：ENTER
NO：DISPEXIT：RESET

2

Press the ENTER button to clear
the log data.
Press the DISP button to return to thescreen shown in the step 1 without
clearing the log data.

3

Press the ENTER button.

The log data has been cleared.
After the log data is cleared, the screen
shown in the step 1 returns automatically.

NOTE
When saved data clear is executed, all the data recorded up to that time will be deleted.

- 68 -

6 Setting Procedure

6-2. Display setting

User ID display/selection
This item is used to display or select user ID.

1

Press the DISP button to display
the screen shown in the rightfigure, and then press the ENTER
button.

2

Select user ID with the
button.

/Press the DISP button to return to thescreen shown in the step 1 without
displaying or selecting user ID.

3

Press the ENTER button.
When the selection is completed, thescreen shown in the step 1 returns
automatically.

NOTE
When the unit is used for the first time, user ID is displayed asshown in the right figure.
If not specified, user ID numbers are registered as 001 - 128.
The data logger management program (optional) is required toregister or change an ID. Contact RIKEN KEIKI to purchase it.

- 69 -

6 Setting Procedure

6-2. Display setting

Station ID display/selection
This item is used to display or select station ID.

1

Press the DISP button to display
the screen shown in the rightfigure, and then press the ENTER
button.

2

Select station ID with the
button.

/Press the DISP button to return to thescreen shown in the step 1 without
displaying or selecting station ID.

3

Press the ENTER button.
When the selection is completed, thescreen shown in the step 1 returns
automatically.

NOTE
When the unit is used for the first time, station ID is displayed asshown in the right figure.
If not specified, station ID numbers are registered as 001 - 128.
The data logger management program (optional) is required toregister or change an ID. Contact RIKEN KEIKI to purchase it.

- 70 -

6 Setting Procedure

6-2. Display setting

Log data display
This item is used to display log data recorded in the manual memory.

1

Press the DISP button to display
the screen shown in the rightfigure, and then press the ENTER
button.
YES：ENTER
NO：DISPEXIT：RESET

2

Select recorded data with the
button.

/Recorded data is indicated by
year/month/day, time and memory
number. When a station ID has been set,
it is displayed under a memory number.
Press the DISP button to return to thescreen shown in the step 1 without
displaying the log data.

3

Press the ENTER button.
The selected recorded data is displayed.
Press the ENTER button again to returnto the screen shown in the step 2.
To exit from the log data display, press
the DISP button to return to the screen
shown in the step 1.

NOTE
See 'Manual memory' (P.54) for recording gas concentrations.
When no gas concentration is recorded, the screen shown in
the right figure appears.

- 71 -

6 Setting Procedure

6-2. Display setting

Peak display settingThis item is used to set peak display so that a peak value blinks on the bar displayed on the right side ofgas concentration on the measurement screen.

1

2

Press the DISP button to display
the screen shown in the rightfigure, and then press the ENTER
button.

Select with the/

YES：ENTER
NO：DISPEXIT：RESET

button.

Select whether or not to blink peakvalue on the bar.
Press the DISP button to return to thescreen shown in the step 1 withoutchanging the setting.

3

Press the ENTER button.
When the setting is completed, thescreen shown in the step 1 returns
automatically.

NOTE
When the peak bar display setting is selected, peakvalue blinks on the bar as shown in the right figure.
Peak
Valuesblink- 72 -

6 Setting Procedure

6-2. Display setting

Gas concentration display settingThis item is used to select the measurement screen display type from split display to six divisions andsingle display. For the single display, automatic or manual switching of display can be selected.

1

Press the DISP button to display
the screen shown in the rightfigure, and then press the ENTER
button.
YES：ENTER
NO：DISPEXIT：RESET

2

Select display type with the
button.

/[DISPLAY ALL] indicates a split display to
six divisions.
[SCROLL AUTO] indicates a single
display which displays multiple channels
in turn automatically.
[SCROLL MANUAL] indicates a single
display which switches a gas
concentration display to anothermanually by pressing the ENTER button.
Press the DISP button to return to thescreen shown in the step 1 withoutchanging the setting.

3

Press the ENTER button.
When the setting is completed, thescreen shown in the step 1 returns
automatically.

NOTE
The figures on the right show
examples of split display to six
divisions and single display.
The gas concentration display setting
is reset by turning on/off the power.

- 73 -

6 Setting Procedure

6-2. Display setting

LCD inversion settingThis item is used to invert the LCD display by 180 degrees according to the direction of the gas monitor.

1

Press the DISP button to display
the screen shown in the rightfigure, and then press the ENTER
button.
YES：ENTER
NO：DISPEXIT：RESET

2

Select with the/

button.

Select the LCD inversion setting.
Press the DISP button to return to thescreen shown in the step 1 withoutchanging the setting.

3

Press the ENTER button.
When the setting is completed, thescreen shown in the step 1 returns
automatically.

NOTE
When the LCD inversion setting is set to OFF (display
direction fixed), [LOCK] is displayed (lights up steadily) in
the upper right section of the screen as shown in the rightfigure.
Even when the LCD inversion setting is set to ON (display
direction inverted), the display direction can be fixed byholding down the DISP button during use. While the display
direction is fixed, [LOCK] is displayed (blinks) in the upper
right section of the screen as shown in the right figure.
For the case the display direction is fixed by holding down
the DISP button, the setting is reset by turning on/off thepower.

- 74 -

6 Setting Procedure

6-2. Display setting

Combustible gas sensor <%LEL> protection setting(only for the specification targeting combustible gas <%LEL> for detection)
The combustible gas sensor <%LEL> is turned off to protect it from contact with high-concentration
combustible gases.

1

2

Press the DISP button to display
the screen shown in the rightfigure, and then press the ENTER
button.

Select with the

/

(

)

(

)

button.

Select the combustible gas sensor()<%LEL> protection setting.

***

***
(

3

)

***

***
(

)

Press the ENTER button.
When the setting is completed, thescreen shown in the step 1 returns
automatically.

NOTE
With ON selected, [- - - -] is displayed in the combustible gas <%LEL> concentration display area.
Also, [NO ALARM] is displayed in the clock display area and the gas alarm function is disabled for
all gases.

- 75 -

6 Setting Procedure

6-2. Display setting

LCD black and white inversion settingThis item is used to invert the black and white display of LCD.

1

Press the DISP button to display
the screen shown in the rightfigure, and then press the ENTER
button.
YES：ENTER
NO：DISPEXIT：RESET

2

Select with the/

button.

Select the LCD black and white
inversion setting.
Press the DISP button to return to thescreen shown in the step 1 withoutchanging the setting.

3

Press the ENTER button.
When the setting is completed, thescreen shown in the step 1 returns
automatically.

NOTE
The figure on the right shows an example of black and white
inversion.

- 76 -

6 Setting Procedure

6-2. Display setting

English display settingThis item is used to resume English display when another language is used.
To correct erroneous language setting, resume English display once using this function and set again.

1

Press the DISP button to display
the screen shown in the rightfigure, and then press the ENTER
button.
CHANGETO ENGLISH
YES:ENTER
NO:DISPEXIT:RESET

2

Press the ENTER button.
Press the DISP button to return to thescreen shown in the step 1 withoutchanging to English display.
CHANGETO ENGLISHCONFIRM ?

The displayed language is changed toEnglish.
When the setting is completed, the screen
shown in the step 1 (displayed in English)
is displayed automatically.

NOTE
The language setting can be changed in the user mode (P. 78) as well.

- 77 -

6 Setting Procedure

6-3. User mode setting

6-3. User mode setting
The display positions of date/time, gas concentration, etc. can be changed in the user mode to makethem easier to use.

Displaying user mode
1

When the power is off, press the POWER
button while pressing theandbutton.
The screen to select user or maintenance mode isdisplayed.

2

Select [USER MODE] and press the ENTER
button.

The user mode menu is displayed.

3

When the setting is completed, select[START MEASURE] in the user mode menu
and then press the ENTER button.
The unit operates just like after turning on the powerand goes on to the measurement screen.

NOTE
The user mode menu returns after setting various items. Press the DISP button to return in theprocess of setting.
The maintenance mode is intended for important settings to perform normal measurement. This isunavailable for users to prevent an accidental change of settings. If the maintenance mode isselected accidentally, turn off the power once and then turn it on again.

- 78 -

6 Setting Procedure

6-3. User mode setting

Setting date/time
This item is used to set date/time.

1

2

Select [DATE] with the
button.

/Press the ENTER button.
The year portion (YYYY) blinks.
Change numbers with the / button.

3

When year is set, press the ENTER
button.
The month portion (MM) blinks.
Change numbers with the / button.
Similarly, set day, hour and minute.
Press the DISP button to go back to theprevious portion like month to year.

4

When minute is set, press the
ENTER button.
When the setting is completed, the user
mode menu returns automatically.

- 79 -

6 Setting Procedure

6-3. User mode setting

Selecting date display format
A desired format can be selected from three options for date display.

1

Select [DATE FORMAT] with the/ button and then press the
ENTER button.

2

Select display with the
button.

/[DD/MM/YYYY] indicates
day/month/year.
[MM/DD/YYYY] indicatesmonth/day/year.
[YYYY/MM/DD] indicatesyear/month/day.
Press the DISP button to return to thescreen shown in the step 1 withoutchanging the display format.

3

Press the ENTER button.
When the setting is completed, the user
mode menu returns automatically.

- 80 -

6 Setting Procedure

6-3. User mode setting

Changing display positions of measured gases
The measured gas concentration display positions can be changed.

1

Select [CONFIGURE CH] with the/ button and then press the
ENTER button.

2

Select the display position tochange with the / button andthen press the ENTER button.
Display positions of [CH1] - [CH6] are as
follows.

Use [ESCAPE] to return to the user mode
menu.

3

Select the display to exchange withthe / button.
The display positions of the selectedchannel and the selected channel in thestep 2 (blinking) are exchanged.

4

Press the ENTER button.
When the setting is completed, thescreen shown in the step 2 returns
automatically.
To return to the user mode menu, press
the DISP button, or select [ESCAPE] andpress the ENTER button.

NOTE
The display of the same measured gas cannot be allocated to multiple CH positions.
- 81 -

6 Setting Procedure

6-3. User mode setting

Changing display language
This item is used to change the language used on the LCD display.

1

Select [LANGUAGE] with the /button and then press the ENTER
button.

2

Select language with the
button.

/ENGLISH＞JAPANESEITALIANSPANISHGERMANFRENCHPORTUGUESE
RUSSIANKOREAN

3

Press the ENTER button.
When the setting is completed, thedisplay changes to the selected language
and the user mode menu returns
automatically.

- 82 -

6 Setting Procedure

6-3. User mode setting

Displaying ROM/SUM
This item is used to check ROM number and the version of error detection data (checksum) sent with
data.

1

Select [ROM/SUM] with the /button and then press the ENTER
button.

ROM number is displayed.

After calculation, SUM is displayed.

2

Press the ENTER button.
The display ends and then the user modemenu returns automatically.

- 83 -

6 Setting Procedure

6-3. User mode setting

Setting password
This item is used to set password to enter the user mode.

1

Select [PASSWORD] with the /button and then press the ENTER
button.

2

Select [ON] with the / button
and then press the ENTER button.

3

Set a four-digit password.
The leftmost "0" blinks.
Select a number from 0 to 9 with the/ button and then press the ENTER
button. The next digit will blink.

4

Press the ENTER button.
When the setting is completed, the user
mode menu returns automatically.

NOTE
With a password set, the password entry screen shown in theright figure appears before entering the user mode or CAL
mode. Enter a password with the / button and then press
the ENTER button.

- 84 -

7 Maintenance7-1. Maintenance intervals and items

7
7

Maintenance

The gas monitor is an important instrument for the purpose of safety.
To maintain the performance of the gas monitor and improve the reliability of safety, perform a regular
maintenance.

7-1. Maintenance intervals and items
Perform the following maintenance regularly before use.
• Daily maintenance: Perform maintenance before beginning to work.
• Monthly maintenance: Perform alarm test once a month.
• Regular maintenance: Perform maintenance once or more for every six months to maintain theperformance as a safety unit.
Maintenance
item
Battery level
Concentration
display

Operation of
main unit
Pump
operation
FilterAlarm testSpanadjustment
Gas alarm
check

Maintenance content
Check that the battery level issufficient.
Make the gas monitor draw in fresh
air. Check that the concentration
display value is zero (or 20.9 % on
the oxygen meter). When the value
is other than zero, perform zeroadjustment by air calibration after
ensuring that no interference gases
exist around.
Check the LCD display for a fault
indication.
Check the pump operation status
display for a fault indication.
Check that the filter is notcontaminated.
Perform alarm test and check thatthe alarm LED arrays, buzzer andvibrator function normally.
Perform span adjustment using acalibration gas.
Check the gas alarm using acalibration gas.

Daily
maintenance

Monthly
maintenance

－
－

－

－

－

WARNING
If any abnormality is found on the gas monitor, promptly contact RIKEN KEIKI.

- 85 -

Regularmaintenance7 Maintenance7-1. Maintenance intervals and items

NOTE
Perform span adjustment using a calibration gas at least once every six months.
The span adjustment requires dedicated equipment and creation of calibration gas. Therefore,
contact RIKEN KEIKI for span adjustment.
The built-in sensors of the gas monitor have a validity period and must be replaced regularly.
The sensor life has expired if, for example, the sensors cannot be calibrated in span adjustment,
the readings do not come back after air calibration, or the readings fluctuate. In this case, contact
RIKEN KEIKI.

About maintenance services
We provide services on regular maintenance including span adjustment, otheradjustments and maintenance.
To make the calibration gas, dedicated tools, such as a gas cylinder of the specified concentration andgas sampling bag must be used.
Our qualified service engineers have expertise and knowledge on the dedicated tools used for services,along with other products. To maintain the safety operation of the gas monitor, please use ourmaintenance service.
The followings are typical maintenance services. Please contact RIKEN KEIKI for more information.

<Typical Maintenance Services>
Battery level
check
Concentration
display check
Flow rate check
Filter check
Alarm test

Checks the battery level.
Verifies that the concentration display value is zero (or 20.9 % on the oxygen
meter) using a zero gas.
Performs air calibration (zero adjustment) if the reading is incorrect.
Checks the flow rate by using an external flow meter.
Checks the dust filter for dust or clogging.
Replaces a dirty or clogged dust filter.
Performs alarm test to check that the alarm lamp, buzzer and vibrator function
normally.

Spanadjustment

Performs span adjustment using a calibration gas.

Gas alarm
check

Checks the gas alarm using a calibration gas.
Checks the alarm. (Checks triggering of alarm when the alarm setpoint isreached.)Checks the delay time. (Checks time to delay until the alarm is triggered.)
Checks the buzzer, lamp, vibrator and concentration display. (Checks eachactivation of two-step alarm.)

Cleaning andrepair of the unit
(visualdiagnosis)
Unit operation
check
Replacement ofconsumableparts

Checks dust or damage on the surface of the unit, cleans and repairs such parts.
Replaces parts which are cracked or damaged.
Operates the buttons to check the operation of functions and parameters.
Replaces consumable parts, such as a sensor, filter and pump.

- 86 -

7 Maintenance7-2. Calibration (CAL mode)

7-2. Calibration (CAL mode)
The CAL mode of the gas monitor provides AUTO CAL and SINGLE CAL in addition to AIR calibration.
AUTO CAL performs calibration with the predetermined gas concentration, while SINGLE CAL performs
calibration by setting gas concentration each time for a single channel.
The gas monitor is equipped with a bump test (function check) function; however, it is set to OFF normallyand thus unavailable. To use this function, please contact RIKEN KEIKI.
Perform span adjustment of sensors using a calibration gas at least once every six months(recommendation).
The span adjustment requires dedicated equipment and a calibration gas. Contact RIKEN KEIKI for it.

CAUTION
Do not use a lighter gas to check the sensitivity of the gas monitor. A constituent of the lighter
gas may deteriorate the sensor performances.

7-2-1. Preparation for calibration<Required Equipment/Material>
Calibration gas (optional)
Gas sampling bag (optional)<Connection>
To perform calibration, connect a gas sampling bag to the unit as shown below.
Main unitGas
samplingbag

Tube
Exhaust- 87 -

7 Maintenance7-2. Calibration (CAL mode)

WARNING
Calibration gas
A calibration gas uses a hazardous gas (combustible gas, toxic gas, oxygen deficiency, etc.).
Handle the gas and related jigs and tools with due care.
Gas sampling bag
Use different gas sampling bags for each gas type and concentration to perform accurate
calibration.
Place for calibration
Do not perform calibration in a confined space.
Perform calibration in a place where no silicone, spray can gases, etc. is used.
Perform calibration indoors at normal temperatures without remarkable fluctuation (within ±5 ºC).
Calibration gas discharge
The gas outlet of the gas monitor must be left open without any pipe connected for release.
Discharge the gas to a safe place.
A calibration gas uses a hazardous gas (combustible gas, toxic gas, oxygen deficiency, etc.).
Discharge the gas with due care.

7-2-2. Entering CAL mode
1

With the measurement screen displayed in
the normal mode, press the DISP and SHIFT
buttons at the same time.

The CAL mode screen is displayed.
> AIR CALAUTO CALSINGLE CAL
TUBE CALCAL CODEESCAPENOTE
Selecting [NORMAL MODE] returns to the measurement screen.
Press the DISP button to return to the previous screen.

- 88 -

7 Maintenance7-2. Calibration (CAL mode)

7-2-3. Air calibration (AIR CAL)
1

2

In the CAL mode, select [AIR CAL] with the/ button and then press the ENTER
button.

Hold down the AIR button.

The air calibration screen is displayed.

Keep the AIR button pressed while the screen
shown in the right figure is displayed.

- 89 -> AIR CALAUTO CALSINGLE CAL
TUBE CALCAL CODEESCAPE

7 Maintenance3

7-2. Calibration (CAL mode)

Release the AIR button when the screen
shown in the right figure is displayed.

When zero adjustment is successfully completed,the screen shown in the step 2 returns. Press the
DISP button to return to the CAL mode menu.

WARNING
When air calibration is performed in the atmosphere, check the atmosphere for freshness before
beginning it. If interference gases exist, zero adjustment cannot be performed properly, thus
leading to dangers when the gas leaks.

CAUTION
Perform air calibration under pressure and temperature/humidity conditions close to those in theoperating environment and in fresh air.
Perform air calibration after the reading is stabilized.

NOTE
When air calibration fails, [FAIL] appears in the measured value display area of the faulty sensor aswell as [SENSOR]. Press the RESET button to reset the fault alarm (calibration failure). When thealarm is reset, the value before calibration is displayed.

- 90 -

7 Maintenance7-2. Calibration (CAL mode)

7-2-4. AUTO CAL
Calibration is performed using the predetermined gas concentration. Simultaneous calibration is available
for the four channels: oxygen, combustible gas <%LEL> and toxic gases (carbon monoxide and hydrogensulfide).
Prepare a calibration gas (P. 87).

1

2

In the CAL mode, select [AUTO
CAL] with the / button andthen press the ENTER button.

AIR CAL> AUTO CALSINGLE CAL
TUBE CALCAL CODEESCAPE

Select [CONCENTRATION] or[GAS SELECT] with the /button and then press the
ENTER button.
Setting gas concentration
Select [CONCENTRATION] -> Go
to step 3
Selecting gas type
Select [GAS SELECT] -> Go tostep 4
Canceling calibration
Select [ESCAPE] -> Go to CAL
mode menu

3

Select gas with the / button
and then press the ENTER
button.
The concentration value of theselected gas blinks.
Select calibration gas concentration
with the / button and then press
the ENTER button to confirm it.
Select [ESCAPE] to return to thescreen shown in the step 2.

4

Select calibration target gas
with the / button and thenpress the ENTER button.
Simultaneous calibration is available
for the four channels: oxygen,combustible gas <%LEL> and toxic
gases (carbon monoxide andhydrogen sulfide).

- 91 -

7 Maintenance7-2. Calibration (CAL mode)

Calibration value are common forisobutylene and selected gas.

AUTO
GAS SELECT> Isobutylene
Acetone
ESCAPE

Select calibration gas isobutylene or
selected gas from “List of gases forreading VOC”.
See 'VOC reading setting' (P. 64)

Select [ESCAPE] to return to thescreen shown in the step 2.

5Make the gas monitor draw inthe calibration gas from the gas
inlet and press the ENTER
button after 60 seconds.
Calibration is executed.
To stop the calibration process, press
the DISP button to return to thescreen shown in the step 4.

6

Press the DISP button.
The CAL mode menu returns after
finishing AUTO CAL.

PASS

- 92 -

7 Maintenance7-2. Calibration (CAL mode)

7-2-5. SINGLE CAL
Calibration is performed by setting gas concentration each time for a single channel. Prepare a calibrationgas (P. 87).

1

2

In the CAL mode, select [SINGLE CAL] withthe / button and then press the ENTER
button.

AIR CAL
AUTO CAL> SINGLE CAL
TUBE CALCAL CODEESCAPE

Select a sensor with the / button andthen press the ENTER button.
Select [ESCAPE] to return to the screen shown inthe step 2.
When select VOC, select calibration gas isobutylene
or selected gas from 'List of gases for reading VOC'.
See 'VOC reading setting' (P. 64)

3Make the gas monitor draw in the calibration
gas from the gas inlet, and adjust thedisplayed gas concentration to theconcentration of the calibration gas usedwith the / button.
Press the ENTER button 60 seconds after starting
drawing in the gas to execute calibration.
To stop the calibration process, press the DISP
button to return to the screen shown in the step 4.

4Press the DISP button.
The CAL mode menu returns after finishing [SINGLE
CAL].

PASS

- 93 -

7 Maintenance7-2. Calibration (CAL mode)

7-2-6. TUBE CAL (only for the specification with VOC<10.0eV>sensor )Calibration is performed with Pre-Filert Tube (CF-8338) and Tube holder (GF-284) (optional) for Benzene
Select mode. See 'Attaching Pre-Filter Tube (CF-8338) and Tube holder (GF-284) (optional)' (P.33).

1

2

In the CAL mode, select [TUBE CAL] with the/ button and then press the ENTER
button.

Install the Pre-Filter Tube(CF-8338) and Tube
holder(GF-284), and then press the ENTER
button.
Press the DISP button to return to the screen shownin the step 1.

AIR CAL
AUTO CALSINGLE CAL> TUBE CALCAL CODEESCAPE

MAINTEBENZENE SELECTINSTALL TUBEAND HOLDER
YES：ENTER
NO：DISP

3

Select [AUTO CAL] or [SINGLE CAL] with the/ button and then press the ENTER
button.
・[AUTO CAL]: Calibration is performed using thepredetermined gas concentrarion.
■Setting gas concentration -> Go to step 4■Performing [AUTO CAL] -> Go to step 5

TUBE CALGAS CALIBRATION> AUTO CALSINGLE CALESCAPE・[SINGLE CAL]: Calibration is performed by setting
gas concentrarion each time for asingle channel.
■ Performing [SINGLE CAL] -> Go to step 8・Returning to [CAL MODE] -> Step 11

4

Select [CONCENTRATION] with the /button and then press the ENTER button.
Select calibration gas concentration with the /button and then press the ENTER button to confirm
it.

- 94 -

TUBE CALAUTO CAL> CONCENTRATIONSTART CALESCAPE

7 Maintenance7-2. Calibration (CAL mode)

5

Select [START CAL] with the /then press the ENTER button.

6

Pump starts, and then calibration starts.
Countdown is shown in the display.
Calibration time varies depending on temperature.
See the following list about the calibration time.
The number in the list is shown in the bottom left
corner of the display.
1.
2.
3.
4.
5.
6.

7

-20.0
-10.0
0.0
+10.0
+20.0
+30.0

-

-10.1 °C
-0.1 °C+9.9 °C+19.9 °C
+29.9 °C
+50.0 °C

button and:135 seconds:110 seconds: 90 seconds: 70 seconds: 45 seconds: 35 seconds

TUBE CALAUTO CALCONCENTRATION> START CALESCAPEAPPLY GASBENZENE SELECT
BNZ

5.20

ppm

5

Press the DISP button.
The CAL mode menu returns after finishing TUBE
CAL.

45SEC

TUBE CALAUTO CAL

PASS

8

Select [SINGLE CAL] with the / button
and then press the ENTER button.

9Make the gas monitor draw in the calibration
gas from the gas inlet, and adjust thedisplayed gas concentration to theconcentration of the calibration gas usedwith the / button.

TUBE CALGAS CALIBRATIONAUTO CAL> SINGLE CALESCAPEAPPLY GASBENZENE
SELECT
BNZ

4.20

ppm

5

- 95 -45SEC

7 Maintenance10

7-2. Calibration (CAL mode)

Press the ENTER button after the countdown
is finished.
The CAL mode menu returns after finishing TUBE
CAL.

TUBE CALSINGLE CAL

PASS

11

Select [ESCAPE] with the / button andthen press the ENTER button to return to the
CAL mode menu.

12

Remove the Tube holder, and then press the
ENTER button.

TUBE CALGAS CALIBRATIONAUTO CALSINGLE CAL> ESCAPE

TUBE CALGAS CALIBRATIONREMOVE HOLDER
YES：ENTER
NO：DISP- 96 -

7 Maintenance7-2. Calibration (CAL mode)

7-2-7. BUMP TESTThe gas monitor is equipped with a bump test (function check) function; however, it is set to OFF normallyand thus unavailable.
To use this function, please contact RIKEN KEIKI.
Simultaneous execution of bump test is available for the four channels: oxygen, combustible gas<%LEL> and toxic gases (carbon monoxide and hydrogen sulfide). Prepare a bump test gas as in thecase of calibration gas (P. 87).

1

Select [BUMP TEST] with the / button
and then press the ENTER button.

2

Select the gas to be tested with the
button.

/Simultaneous testing is available for the fourchannels: oxygen, combustible gas <%LEL> andtoxic gases (carbon monoxide and hydrogensulfide).

- 97 -

7 Maintenance7-2. Calibration (CAL mode)

Select [ESCAPE] to return to the CAL mode menu.

3

Make the gas monitor draw in the test gas
from the inlet and press the ENTER button.
BUMP TEST starts and a 30-second countdown
starts.
To stop the process, press the DISP button to returnto the screen shown in the step 4.

After 30 seconds, the result of [BUMP TEST] isdisplayed.
If the result of [BUMP TEST] is [NG], calibration isstarted automatically. Check that calibration has
been performed accurately for all gases and [OK]has been displayed before use.
If NG is displayed as a result of calibration, replace
the sensor (P. 102).

4

Press the DISP button.
The CAL mode menu returns after finishing [SINGLE
CAL].

- 98 -

7 Maintenance7-3. How to clean

7-3. How to clean
Clean the gas monitor if it becomes extremely dirty. The gas monitor must be turned off while cleaning it.
Use a waste cloth or the like to remove dust. Do not use water or organic solvent for cleaning because
they may cause malfunctions.
Because an extremely contaminated taper nozzle may disturb the gas detection, it must be cleaned withdry air, etc.

CAUTION
When cleaning the gas monitor, do not splash water over it or use organic solvents such as
alcohol and benzine on it. It may cause discoloration or damage to the surface or sensor failure.

NOTE
When the gas monitor gets wet, water may remain in the buzzer sound opening or grooves. Drain
water as follows:(1) Wipe away moisture on the gas monitor thoroughly using a dry towel, cloth, etc.
(2) While holding the gas monitor firmly, shake it about ten times with the buzzer sound opening facing
downward.
(3) Wipe away moisture coming out from the inside thoroughly using a towel, cloth, etc.
(4) Place the gas monitor on a dry towel, cloth, etc. and let it stand at normal temperatures.

- 99 -

7 Maintenance7-4. Parts replacement

7-4. Parts replacement
7-4-1. Gas inlet filter replacement
The gas inlet part contains a dust filter and wire mesh filter. Because the filters may gradually get dirty or
clogged over time, they must be replaced according to the operating conditions. Especially the dust filter
must be replaced when it shows a sign of water absorption, low flow rate or contamination. See theregular replacement parts (P. 107) for a replacement filter.

1 Turn the filter case counterclockwise and remove it.
2 Take out the filter and replace with a new filter.
3 Attach the filter case that has been removed.

Filter case

Wire mesh

NOTE
The dust filter and wire mesh filter are attached to the main unit side.
Use only the filters specified by RIKEN KEIKI.

- 100 -

Dust filter

7 Maintenance7-4. Parts replacement

7-4-2. Sensor filter replacement
The sensor part contains various filters. Replace them regularly. See the regular replacement parts (P.
107) for a replacement filter.

1

Remove the battery unit, loosen the fourscrews of the sensor cover and remove
the sensor cover.

FourscrewsSensor cover

2

Take out filters and replace them withnew ones.

Hydrogen sulfide
scrubber filter(CF-6264-8)
Activatedcarbon filter(CF-1821-2)

3

Attach the sensor cover to the main unit
and tighten the four screws.

CAUTION
Turn off the power of the gas monitor before replacing the filter.
Do not remove the sensor cover except for filter replacement. When the sensor cover is not
attached properly, accurate measurement may not be possible due to leaks, or water may get
inside.
Use the dedicated filters for this gas monitor only. Using a similar product may have harmful
effects on the gas detection performance.
If the screws are not tightened completely, accurate gas measurement may not be possible due
to leaks, or water may get inside. The same thing may occur if a minute foreign substance getsstuck.

- 101 -

7 Maintenance7-4. Parts replacement

7-4-3. Sensor replacement
The built-in sensors of the gas monitor have a validity period and must be replaced regularly.
The sensor life has expired if, for example, the sensors cannot be calibrated in span adjustment, thereadings do not come back after air calibration, or the readings fluctuate. Replace them as necessary. See'Regular replacement parts' (P. 107) for recommended replacement intervals of sensors.

1

Remove the four screws at theback of the main unit and remove
the sensor cover.
Sensor cover

2

Remove the hydrogen sulfide
scrubber filter and activatedcarbon filter from the rubber seal.

3

Remove the rubber seal.

Hydrogen sulfide
scrubber
FilterActivated carbon filter

Rubber seal

- 102 -

7 Maintenance4

7-4. Parts replacement

Replace the sensor.

CO sensor

Attach a new sensor to the position
where the old sensor was mounted.
Attach the sensor according to thefollowing instructions.

H2S sensor
Combustible
gas sensor<%LEL>

O2 sensor

Combustible gas sensor <%LEL>
The contact piece on the side of the Arbitrarily selected
sensor (1)sensor comes in contact with thecontact piece of the main unit.
CO and H2S sensors
The triangle marks ( ) on the sensor
and main unit are facing each other.
Arbitrarily selected sensor (1) and (2)The connector at the back of thesensor is inserted to the connector of
the main unit.

Holes(three locations)

Attach the rubber seal, newhydrogen sulfide scrubber
filter and activated carbon
filter, and then fix the sensor
cover by tightening the fourscrews.

5

Arbitrarily
selected
sensor (2)Tabs(two locations)

To attach the rubber seal, hang it on thetabs (two locations) of the case andpush it against the holes (threelocations) of the case to fix.

CAUTION
Turn off the power of the gas monitor before replacing the sensor and the filter.
When replacing a sensor, replace the sensor filter as well.
Use only the filters specified by RIKEN KEIKI.
Do not touch the filters for NO2 sensor and SO2 sensor by hand.
These filters may be discolored. If the filters are touched by hand,be sure to wash the hands.When the color changes remarkably,Filterthe discoloration may cause the sensor sensitivity to be low.
Never fail to perform calibration (P. 87) after sensor replacement.
Side view of
NO2 and SO2 sensor

NOTE
The mounted sensors vary by the specification.
To replace a sensor, be sure to attach a new sensor to the position where the old sensor was
attached. If a sensor is attached to a wrong position, [SENSOR FAIL] is displayed or correct
measurement cannot be performed.
If the mounting position of the arbitrarily selected sensor is lost, attach the VOC sensor<10.6eV/ppb>, VOC sensor <10.0eV>, VOC sensor <10.6eV/ppm>, Cl2 sensor, NH3 sensor andother sensor in this order to the arbitrarily selected sensor (1) mounting position and arbitrarily
selected sensor (2) mounting position. If the sensor is attached in the wrong order, [SENSOR FAIL]
is displayed and measurement becomes unavailable.
- 103 -

7 Maintenance7-4. Parts replacement

7-4-4. VOC sensor maintenance
The electronics in VOC sensor are designed to be maintenance-free and not accessible. Periodic sensor
maintenance is required for the Mini Pellet and the lamp.
When does my VOC sensor require maintenance?
Your PID lamp will need cleaning from time to time. How often depends on theenvironment you are measuring. If you are measuring indoor air quality where theVOC concentrations are low and there are few particulates, then a monthly or evenless frequent calibration may be adequate. However, if you are measuring high
VOC concentrations and particulates are present in high concentration then checkcalibration frequently and when the PID has lost sensitivity or error state shows,change the pellet as explained below.
Signs when the PID needs attention:
If the baseline climbs after you zero the PID, then the pellet needs replacing.
If the PID becomes sensitive to humidity, then the pellet needs replacing.
If the baseline shifts/unstable when PID moves, then pellet needs replacing.
If sensitivity has dropped too much (note the change required when checking calibration), then the lamp
needs cleaning.
When do I clean the PID lamp?
Cleaning of the PID lamp is recommended as a first action when presented with an PID that needs cleaning.
Use the procedure described below. It is recommended that a cell is recalibrated after cleaning a lamp,
especially if the cell has been used for a few months since the sensor was last used.
When do I replace the PID electrode pellet?
The MiniPID pellet can last the lifetime of the MiniPID if used in clean environments, or may only last amonth if used in heavily contaminated sites. The pellet is a disposable item, so always hold a spare pellet if
you are working in a dirty environment. If the cell shows signs of contamination after the lamp window has
been cleaned, or is known to have been subjected to severe contamination, then it should be replaced.
Instructions for replacing the pellet are below. It is recommended that the MiniPID is recalibrated after
replacing the pellet.
When do I replace the PID lamp?
An PID lamp will last a long time, typically a few thousand hours. The sensitivity of the VOC sensor isapproximately in direct proportion to the lamp light intensity, so as a bulb fails, the response to a particular,
low gas concentration becomes more noisy.
Validity of lamp warranty is compromised if lamp cleaning maintenance is not followed and lamp has obvious
fouling/contamination.
Removing Electrode Pellet and PID Lamp
Caution: Always use the Pellet removal tool. Any other tools (for example screwdrivers) may damage your
VOC sensor body.
1. Gently remove the sensor from equipment.
2. Place the VOC sensor, pellet side down, onto a clean surface.
3. Locate pellet removal tool into the side slots of the VOC sensor and squeeze together until pellet andlamp are released.
4. Lift carefully the VOC sensor body away from the pellet and lamp.
5. Occasionally the lamp may be temporarily lodged in the cell and will need to be freed carefully withtweezers.
6. Occasionally the small spring behind the lamp will come out when the lamp is removed from the sensor.
Simply replace it in to the sensor house.

Eye

Light
PID
Lamp

- 104 -

7 Maintenance7-4. Parts replacement

Cleaning the PID Lamp
Inspection of the lamp may reveal a layer of contamination on the detection window that presents itself as a
‘blue hue.’ To check for contamination, hold the PID lamp in front of a light source and look across thewindow surface
Only clean the lamp using our recommended lamp cleaning kit and detailed instructions. To avoid
contaminating the sensor and affecting accuracy, do not touch the lamp window with bare fingers. You may
touch the lamp body with clean fingers.

PID lamp cleaning kit
The vial of cleaning compound contains alumina (CAS Number 1344-28-1) as a very fine powder. Cleaning
should be undertaken in a well-ventilated area. A full material safety data sheet MSDS is available on
request from RIKEN KEIKI. Key safety issues are identified below:

Hazard identification:
May cause irritation of
respiratory tract and eyes
Storage:
Keep container closed toprevent water adsorption andcontamination.

Handling:
Do not breathe in the powder. Avoid contact with skin, eyes andclothing
Wear suitable protective clothing
Follow industrial hygiene practices: Wash face and hands thoroughlywith soap and water after use and before eating, drinking, smoking or
applying cosmetics.
The powder carries a TVL (TWA) limit of 10 mg/m3

Cleaning the PID Lamp
Use of PID lamp cleaning kit
1. Open the container of alumina polishing compound.
2. With a clean cotton bud, collect a small amount of the powder.
3. Use this cotton bud to polish the PID lamp window. Use a circularaction, applying light pressure to clean the lamp window. Do not touchthe lamp window with fingers.
4. Continue polishing until an audible “squeaking” is made by the cotton
bud moving over the window surface. (usually within 15 seconds)
5. Remove the residual powder from the lamp window with a clean
cotton bud. Care must be taken not to touch the tips of cotton budsthat are to be used to clean the lamps as this may contaminate them with finger print oil.
6. Ensure the lamp is completely dry and any visible signs of contamination are removed before refitting.

Discarding the Electrode pellet
Discard the contaminated pellet. The pellet does not have any toxic components, but if it has been
contaminated by toxic materials, then show due care when disposing.

- 105 -

7 Maintenance7-4. Parts replacement

Re-fitting Electrode pellet and PID lamp
Caution! Never refit a damaged lamp
1. Place the lamp inside the O-ring seal in the pellet as illustrated. Twisting the lamp slightly during insertion
will help to ensure the lamp window is snug against the pellet’s front electrode. The lamp should be freely
supported by the O-ring.
2. Lay the pellet front face down on a clean, flat surface and then screw the lamp down into the O-ring until
it firmly abuts against the front electrode face – this is most important. Then bring the MiniPID bodycarefully down over the lamp so as not to disturb its positioning within the pellet and then push the bodyfirmly onto the face down pellet so that it clicks into place.
3. Refit the sensor into the sensing equipment.
4. Re-calibrate the equipment in accordance with manufacturer’s instructions.

- 106 -

7 Maintenance7-4. Parts replacement

7-4-5. Regular replacement parts
Consumable parts of the gas monitor are listed below. Replace the consumable parts according to therecommended intervals.

<List of Recommended Replacement Parts>
Name

Quantity

Remarks
Used for CO sensor.
Recommended check intervals : 3 months
Recommended replacement intervals : 6 months
Used for VOC sensor.
(Only for the specification targeting VOC for
detection)
Recommended check intervals : 6 months
Recommended replacement intervals : 1 year
Used for VOC sensor.
(Only for the specification targeting VOC and CO2
for detection)
Recommended check intervals : 6 months
Recommended replacement intervals : 1 year
Used for combustible gas sensor (%LEL).
Recommended check intervals : 3 months
Recommended replacement intervals : 6months
Recommended check intervals : 3 months
Recommended replacement intervals : 6months

Activated carbon filter(CF-1821-2)

1

Activated carbon filter(CF-8350)

1

Activated carbon filter(CF-8501)

1

Hydrogen sulfide scrubber filter(CF-6264-8)

1

Dust filter

1

Wire mesh

1

CO2 removal filter (CF-284)

1

HC/CH4 sensor <%LEL> (NC6264AZP)

1

O2 sensor (OS-BM2C)

1

H2S sensor (ES-1827i)

1

CO sensor (ES-1821)

1

SO2 sensor (ESS-03DH)1

NO2 sensor (ESS-03DH)1

HCN sensor (ESS-03DH)1

NH3 sensor (ESS-B332)

1

Cl2 sensor (ESS-B335)

1

CO2 sensor (DES-3311-1)

1

HC sensor (DES-3311-2)

1

VOC sensor <ppb> (PIS-001A)

1

VOC sensor <ppm>(PIS-002A)

1

PID lamp (10.6 eV)

1

Used for VOC sensor.

Electrode pellet <10.6eV/ppb>

1

Used for VOC sensor <10.6eV/ppb>.

Electrode pellet <10.6eV/ppm>

1

Used for VOC sensor <10.6eV/ppm>.

Electrode pellet <10.0eV>

1

Used for VOC sensor <10.0eV>.

CO2 sensor<vol%> (DES-3311-1)

1

HC sensor <%LEL / vol%>(DES-3311-2)

1

Used for CO2 sensor.
Recommended check intervals : 6 months
Recommended replacement intervals : 1 year

- 107 -

7 MaintenanceCH4 sensor <%LEL / vol%>(DES-3311-3)

1

CO2 sensor<ppm> (DES-3311-4)

1

Pump unit (RP-12)

1

Recommended check intervals : 6 months
Recommended replacement intervals : 1 - 2 years

1 set

Recommended replacement intervals : 2 years *Lithium ion battery unit
(BUL-6000)

1

For customers who use the lithium ion battery unit.
Recommended replacement intervals : About 500
cycles of charging and discharging

Alkaline dry battery3

For customers who use the alkaline battery unit. AA
type.

Rubber seals*

7-4. Parts replacement

The operation must be checked after replacement by a qualified service engineer. For the stable
operation of the unit and safety, ask a qualified service engineer to take care of replacement of the part.
Request it from RIKEN KEIKI.

NOTE
The above replacement intervals are recommendation only. The intervals may change dependingon the operating conditions. These intervals do not mean the warranty periods either. The result of
the regular maintenance may determine when to replace the parts.

- 108 -

8 Storage and Disposal

8-1. Procedures to store the gas monitor or leave it for a long time

88

Storage and Disposal

8-1. Procedures to store the gas monitor or leave it fora long time
The gas monitor must be stored under the following environmental conditions.
• In a dark place under the normal temperature and humidity away from direct sunlight• In a place where gases, solvents or vapors, etc. are not present
Store the gas monitor in a shipping carton, if any, in which the product was delivered.
Store the gas monitor away from dust, etc. if the shipping carton is not available.

CAUTION
If the gas monitor is not used for a long time, store it after removing the lithium ion battery unit.
Or remove dry batteries when the dry battery unit is used. Leaks from dry batteries may result infire or injury.
If the gas monitor is not used for a long time, turn on the power at least once every six months
and check that the pump draws in air (about three minutes). The gas monitor, when not activatedfor a long time, may cease to work because of hardening of the grease in the pump motor.

NOTE
If the gas monitor with the lithium ion battery unit attached is not used for a long time, it isrecommended to store it after discharging the batteries until the battery level icon shows one
battery mark or so. If the gas monitor is stored with the batteries fully charged, the batteries getdeteriorated more quickly and may have shorter life.
If the gas monitor with the dry battery unit attached is not used for a short time, store it with drybatteries attached. Since the sensor of the gas monitor is energized at all times including power-off
time, it is required to keep dry batteries attached for storage.

8-2. Procedures to use the gas monitor again
When using the gas monitor after storage, perform calibration.

CAUTION
Contact RIKEN KEIKI for readjustment including calibration.
If there is a sudden temperature change of 15 ºC or more between the storage and operational
locations, turn on the power of the gas monitor, let it stand for about 10 minutes in a similar
environment to the operational location, and perform air calibration in fresh air before using it.

- 109 -

8 Storage and Disposal

8-3. Disposal of products

8-3. Disposal of products
When the gas monitor is disposed of, it must be treated properly as an industrial waste in accordance withthe local regulations.

WARNING
Do not disassemble the electrochemical type sensor or galvanic cell type sensor because they
contain electrolyte. Electrolyte may cause severe skin burns if it contacts skin, while it may cause
blindness if it contacts eyes. If electrolyte is adhered on your clothes, that part on your clothes is
discolored or its material is decomposed.
If contact occurs, rinse the area immediately with a large quantity of water. Dispose of dry
batteries in accordance with procedure specified by the local authority.

<Disposal in EU Member States>
When disposing of the gas monitor in EU member states, sort the batteries as specified.
Handle the batteries removed from the lithium ion battery unit (BUL-6000) or dry batteries used for the drybattery unit (BUD-6000) according to the classified refuse collection system and recycling system basedon the regulations of EU member states.

NOTE
Crossed-out recycle dustbin markThis symbol mark is indicated on the products which contain the batteries
which fall under EU Battery Directive 2006/66/EC. Such batteries need to bedisposed of as specified by the latest Directive. This symbol mark indicatesthat the batteries need to be separated from the ordinary waste anddisposed of appropriately.

- 110 -

9 Troubleshooting

9-1. Abnormalities on unit

99Troubleshooting

The troubleshooting does not explain the causes of all the malfunctions which may occur on the gas
monitor. This simply helps to find the causes of malfunctions which may frequently occur.
If the gas monitor shows a symptom which is not explained in this manual, or still has malfunctions eventhough remedial actions are taken, please contact RIKEN KEIKI.

9-1. Abnormalities on unit
Symptoms<Screen display>

CausesActions
Lithium ion battery unit: Charge in a safe place.

The battery level is too low.

Dry battery unit: Replace all the three drybatteries with new ones in a safe place.

The POWER button was
not pressed enough.

For power-on, press the POWER button andrelease it when the buzzer blips.

Improper installation of thebattery unit

Check whether the battery unit is properlyattached to the main unit.

Abnormaloperations

Disturbances by sudden
static electricity noise, etc.

Turn off the power once and then turn it on
again (restart).

Cannot operate thegas monitor.

Disturbances by sudden
static electricity noise, etc.

Remove the battery unit in a safe place. Thenreinstall it and turn on the power to perform
operations.

The power cannot
be turned on.

A low battery
voltage alarm isdisplayed.
[FAIL BATTERY]

The batteries
cannot be charged.
(Lithium ion battery
unit only)

A low flow rate
alarm is displayed.
[FAIL LOW FLOW]The battery level is low.

Lithium ion battery unit: Turn off the power andcharge it in a safe place.
Dry battery unit: Turn off the power and replace
the dry batteries with new ones in a safe place.

The charger is notconnected properly.

Connect the AC plug and DC plug of the AC
adapter properly.

A charging circuit
abnormality occurred.

Request the dealer or Riken Keiki local
representative for repair.

The batteries have been
fully charged.

When fully charged batteries are charged again,
the charging indicator lamp does not go on.

Water, oil or the like isdrawn.

Check the taper nozzle for any damage or markof drawn water, oil, etc.

The filter is clogged.

Check the filter for attachment condition,
clogging, torsion, etc.

- 111 -

9 Troubleshooting
Symptoms<Screen display>

A low flow rate
alarm is displayed.
[FAIL LOW FLOW]

Air calibration
impossible[SENSOR FAIL]

Sensorabnormalities[SENSOR FAIL]

Systemabnormalities[FAIL SYSTEM]

9-1. Abnormalities on unit

CausesActions

The pump has deteriorated.

Request the dealer or Riken Keiki local
representative to replace the pump.

The unit was stored for along time without being
used (six months or
longer).

When the low flow rate alarm is displayed, turnoff the unit once and then turn it on again(restart). Repeat this procedure several times. If
the problem still persists, request RIKEN KEIKI
to replace the pump.

Fresh air is not suppliedaround the gas monitor.

Supply fresh air.

Deteriorated sensor
sensitivity

Replace the sensor with new one. (P. 102)

Deteriorated sensor
sensitivity

Replace the sensor with new one. (P. 102)
(If [FAIL] is displayed in place of measured
value at power-on, the alarm can be reset bypressing the RESET button. The operation canbe continued using only the normal sensors todetect other gases.)

The sensor mounting
position is incorrect.

Mount the sensor properly. (P. 102)

(VOC sensor)
The PID lamp is
contaminated.

Clean the PID lamp. (P. 103)

(VOC sensor)
Deteriorated electrodepelletReplace the electrode pellet with new one.
(P. 103)(VOC sensor)
Deteriorated PID lamp

Replace the PID lamp with new one. (P. 103)

A circuit abnormality
occurred.

Error No. 000

Abnormalities of internal
ROM

Error No. 010

Abnormalities of internal
RAM

Error No. 021

Abnormalities of internal
FRAM

Error No. 031

Abnormalities of internal
FLASH memory

Request Riken Keiki for repair.

Clockabnormalities[FAIL CLOCK]

Abnormalities of theinternal clock

Make a setting of date/time. (P. 79)
If a symptom like this is observed repeatedly,
the built-in clock is seemingly malfunctioning.
Thus, it must be replaced. Please contact
RIKEN KEIKI.

Cannot enter theuser mode.

A password to enter theuser mode has beenforgotten.

Please contact RIKEN KEIKI.

- 112 -

9 Troubleshooting

9-2. Abnormalities of readings

9-2. Abnormalities of readings
Symptoms

The reading rises(drops) and it
remains so.

A gas alarm istriggered despite ofno gas leak and noother abnormalities
at the detection
point.

Slow response

Calibration
impossible
VOC concentration
rises despite of noabnormalities likegas leak at thedetection point after
zero calibration.
VOC sensor
sensitivity has been
deteriorated
significantly.

The concentration
display area of the
VOC sensor shows"----", the lamp
flashes and thebuzzer sounds.

CausesActions

Drifting of sensor output

Perform zero adjustment (air calibration). (P. 40)

Slow leakA very small amount of the gas to be detected
may be leaking (slow leak). Because ignoring it
may cause dangers, take actions and measures
which are taken at an occurrence of gas alarm.

Environmental changes

Perform zero adjustment (air calibration). (P. 40)
In particular, the galvanic cell type is affected by
the air pressure.

Disturbance by noise

Turn off the power once and then turn it on
again (restart).
If a symptom like this is observed frequently,
take appropriate measures to eliminate thenoise.

Clogged dust filter

Replace the dust filter. (P. 100)

Bended or clogged taper
nozzleFix the defective parts.

Condensation is formed
inside the gas monitor.

Fix the defective parts by providing dry air, etc.

Deteriorated sensor
sensitivity

Replace the sensor with new one. (P. 102)

Improper calibration gas
concentration

Use the proper calibration gas.

Deteriorated sensor
sensitivity

Replace the sensor with new one. (P. 102)

Deteriorated electrodepelletReplace the electrode pellet with new one.
(P. 90)

The PID lamp is
contaminated.

Clean the PID lamp. (P. 103)

Deteriorated PID lamp

Replace the PID lamp with new one. (P. 103)

Presence of highconcentrations of negativeinterfering gases (such as
CH4)

Supply fresh air. When the gas is no longer
affected, it will automatically resume
measurement in about 10 seconds.

The PID lamp is
contaminated.
Deteriorated PID lamp
Deteriorated electrodepellet- 113 -

Supply fresh air. If the sensor does not recovereven after supplying fresh air, restart the unit. If"SENSOR FAIL" is displayed after rebooting,the sensor may have deteriorated. Clean the
PID lamp (P. 103). If the problem still persists,
replace the PID lamp with new one (P. 103) or
replace the electrode pellet with new one (P.
90).

10 Product Specifications

10-1. List of specifications

10
10

Product Specifications

10-1. List of specifications<Common Specifications>Concentration display

Digital LCD (full-dot display, 160 x 128 dots)

Detection method

Pump suction type

Flow rate

0.45 L/min or more (Open flow rate)

Displays

Clock display, battery level display, operating state display and flow check display

Display language

English, Japanese, French, Spanish Portuguese, Italian, German, Russian, Korean

Buzzer sound volume

95 dB (A) or higher (30 cm) (with protect cover)Gas alarm display

Lamp blinking, continuous modulating buzzer sounding, gas concentration and alarmdetail display blinking and vibration

Gas alarm pattern

Self-latching

Fault alarm/self diagnosis

System abnormalities, sensor abnormalities, battery voltage drop, calibration failure,
and low flow rate

Fault alarm display

Lamp blinking, intermittent buzzer sounding, and detail display

Fault alarm pattern

Self-latching

Panic alarm display

Preliminary alarm: Lamp blinking, intermittent buzzer sounding
Main alarm: Lamp blinking, continuous modulating buzzer sounding

Panic alarm pattern

Self-latching

Man-down alarm display

Preliminary alarm: Lamp blinking, intermittent buzzer sounding
Main alarm: Lamp blinking, continuous modulating buzzer sounding(*1)

Man-down alarm pattern(*1)

Non latching (auto-reset)

Transmission
specification

IrDA (for data logger)

Power supply

Standard: Dedicated lithium ion battery unit [BUL-6000]*2
Option: Dedicated dry battery unit <AA alkaline dry battery x 3> [BUD-6000]

Continuous operatingtime

BUL-6000: About 14 hours (25 ºC, no alarm and no lighting)
BUD-6000: About 8 hours (25 ºC, no alarm and no lighting)Operating temperatures-20 - +50 ºC (at a constant condition)

Operating humidities

Below 95 % RH (Non-condensing)

Structure

Drip-proof and dust-proof performances (compliant to IP67 level) (tubes excluded)

Explosion-proof structure Intrinsically safe explosion-proof structure

Explosion-proof class

ATEX/UKEX ：II 1 G Ex ia IIB T4 Ga (with combustible gas sensor, BUL-6000)
II 1 G Ex ia IIC T4 Ga (without combustible gas sensor, BUL-6000)
II 1 G Ex ia IIB T4 Ga (with combustible gas sensor,BUD-6000 TOSHIBA)
II 1 G Ex ia IIC T4 Ga (without combustible gas sensor, BUD-6000 TOSHIBA)
II 1 G Ex ia IIB T3 Ga (with combustible gas sensor, BUD-6000DURACELL)
II 1 G Ex ia IIC T3 Ga (without combustible gas sensor, BUD-6000DURACELL)
IECEx ：
Ex ia IIB T4 Ga (with combustible gas sensor, BUL-6000)
Ex ia IIC T4 Ga (without combustible gas sensor, BUL-6000)
Ex ia IIB T4 Ga (with combustible gas sensor, BUD-6000 TOSHIBA)- 114 -

10 Product Specifications

10-1. List of specifications
Ex ia IIC T4 Ga (without combustible gas sensor, BUD-6000 TOSHIBA)
Ex ia IIB T3 Ga (with combustible gas sensor, BUD-6000DURACELL)
Ex ia IIC T3 Ga (without combustible gas sensor, BUD-6000DURACELL)
Japan Ex ： Ex ia IIC T4X

External dimensions

Approx. 70 (W) x 201 (H) x 54 (D) mm (projection portions excluded)

WeightApprox. 500 g (When BUL-6000 is used)/Approx. 450 g (When BUD-6000 is used)*1 Normally the man-down alarm function is set to OFF and unavailable. To use this function, please contact RIKEN
KEIKI.
*2 JG (Japanese Government) type approval is only available for the rechargeable battery type (BUL).

- 115 -

10 Product Specifications

10-1. List of specifications<Specifications of Each Sensor>
Gas to be
detected

Combustible gas(HC/CH4)*1<%LEL>

Oxygen(O2)Hydrogen sulfide(H2S)

Carbon monoxide(CO)

Detection
principle
Detection range<Service range>
Minimum
resolution

New ceramic

Galvanic cell type

Electrochemical type

Electrochemical type0 - 100 %LEL

0 - 25.0 %<to 40.0 vol%>0 - 30.0 ppm<to 100.0 ppm>

0 - 150 ppm<to 500 ppm>

1 %LEL0.1 vol%

0.5 ppm

1 ppm

Alarm setpoint

10 %LEL (AL1)
50 %LEL (AL2)
100 %LEL (OVER)

19.5 vol% (AL1)
23.5 vol% (AL2)40.0 vol% (OVER)

5.0 ppm (AL1)
30.0 ppm (AL2)
10.0 ppm (TWA)
15.0 ppm (STEL)
100.0 ppm (OVER)

25 ppm (AL1)
50 ppm (AL2)
25 ppm (TWA)
200 ppm (STEL)
500.0 ppm (OVER )Gas to be
detected

Volatile organic
compound
(VOC)
<ppb>

Volatile organic
compound
(VOC)
<ppm>

Sulfur dioxide(SO2)

Nitrogen dioxide(NO2)

Detection
principle

Photoionization type

Photoionization type

Electrochemical type

Electrochemical type0 - 40000 ppb

0 - 4000 ppm

0 – 99.90 ppm

0 - 20.00 ppm

Minimum
resolution

1 ppb(0 - 4000 ppb)
10 ppb(4000 – 40000 ppb)

0.1 ppm(0 - 400.0 ppm)
1 ppm
(400 – 4000 ppm)

0.05 ppm

0.05 ppm

Alarm setpoint

5000 ppb (AL1)
10000 ppb (AL2)
40000 ppb (OVER)

400.0 ppm (AL1)1000 ppm (AL2)4000 ppm (OVER)

2.00 ppm (AL1)
5.00 ppm (AL2)2.00 ppm (TWA)
5.00 ppm (STEL)
99.90 ppm (OVER)

3.00 ppm (AL1)
6.00 ppm (AL2)
3.00 ppm (TWA)
20.00 ppm (OVER)

Gas to be
detected

Hydrogen cyanide(HCN)

Ammonia(NH3)

Chlorine(Cl2)

Phosphine(PH3)

Detection
principle

Electrochemical type

Electrochemical type

Electrochemical type

Electrochemical type0 - 15.0 ppm

0 - 400.0 ppm

0 - 10.00 ppm

0 - 20.00ppm

0.1 ppm

0.5 ppm

0.05 ppm

0.01ppm

Alarm setpoint

5.0 ppm (AL1)
10.0 ppm (AL2)
4.7 ppm (STEL)
15.0 ppm (OVER)

25.0 ppm (AL1)
50.0 ppm (AL2)25.0 ppm (TWA)
35.0 ppm (STEL)
400.0 ppm (OVER)

0.50 ppm (AL1)
1.00 ppm (AL2)0.50 ppm (TWA)
1.00 ppm (STEL)
10.00 ppm (OVER)

0.30ppm (AL1)
1.00ppm(AL2)0.30ppm(TWA)
1.00ppm(STEL)
20.00ppm(OVER)

Gas to be
detected

Carbon dioxide(CO2)

Carbon dioxide(CO2)

Combustible gas(HC)＜%LEL/vol%＞Combustible gas(CH4)<%LEL/vol%>Detection
principle

Non-dispersive
infrared typeNon-dispersive
infrared typeNon-dispersive
infrared typeNon-dispersive
infrared type

Detection range

0 – 10.00 vol%0 – 10000 ppm

0 - 100 %LEL
<to 30.0 vol% >(*2)

0 - 100 %LEL
- 100 vol%(*2)

0.02 vol%20 ppm

1 %LEL/0.5 vol%1 %LEL/0.5 vol%5000 ppm (AL1)5000 ppm (TWA)
10000 ppm (OVER)

10 %LEL/― (AL1)
50 %LEL/― (AL2)30 vol% (OVER)

10 %LEL/― (AL1)
50 %LEL/― (AL2)
100.0 vol% (OVER)

Detection range

Detection range<Service range>
Minimum
resolution

Minimum
resolution
Alarm setpoint

0.50 vol% (AL1)
3.00 vol% (AL2)0.50 vol% (TWA)
3.00 vol% (STEL)
10.00 vol% (OVER)*1 Please refer to the table of correction factors for readings to other gases. The factory default setting iseither CH4 or HC (specified in the order).
*2 The display automatically switches to the vol% range when the concentration of a detected combustible
gas exceeds 100 %LEL.

- 116 -

10 Product Specifications

Gas to be
detected
Detection
principle
Measurement
mode
Detection range<Service range>
Minimum
resolution

Alarm setpoint

10-2. List of accessories

Volatile organic compound (VOC)
Photoionization type (10.0eV)
Normal Mode

Benzene Select Mode0 - 100 ppm

0 - 50 ppm

0.01 ppm(0 - 10 ppm)
0.1 ppm(10 - 100 ppm)
5 ppm (AL1)
10 ppm (AL2)
100 ppm (OVER)

0.01 ppm(0 - 10 ppm)
0.1 ppm(10 - 50 ppm)
50 ppm (OVER)

10-2. List of accessories• Lithium ion battery unit (BUL-6000) / Charger (1 pc)
or• Dry battery unit (BUD-6000) / AA alkaline battery (3 pcs)

Standard accessories

Optional items (soldseparately)• Protect cover (1 pc)• Belt clip (1 pc)• Taper nozzle (1 pc)• Hand strap (1 pc)• LCD protection film (1 pc)• Activated carbon filter (1 pc)
CF-8350(Provided only for the specification targeting VOC for detection)
or CF-8501(Provided only for the specification targeting VOC and CO2 for detection)• CO2 removal filter (CF-284) (1 pc)(Provided only for the specification targeting CO2 for detection)• Operating manual• Product warranty• Lithium ion battery unit (BUL-6000)• Charger (1 pc)• Dry battery unit (BUD-6000)• AA alkaline battery (3 pcs)
• Gas sampling probe (1pc)• Gas sampling hose (0.75 m) (1pc)• Gas sampling hose (5 m) (1pc)• Gas sampling hose (10 m) (1pc)• Gas sampling hose (20 m) (1pc)• Gas sampling hose (30 m) (1pc)• PID Pre-Filert Tube (1pc/10tubes)• Tube holder (1pc)• Various filters• Gas sampling bag• Lamp cleaning kit• Data logger management program• Setting program for the list of gases for reading VOC

CAUTION
The gas sampling hose may absorb a small amount of several of the GX-6000’s target gases,
such as toxic gases, solvents, or VOCs. This absorption causes the target gas reading on the
GX-6000 to be lower than the sampled environment’s actual gas level.
- 117 -

11 Appendix

11-1. Calibration history/various trend/event history functions

11
11

Appendix11-1. Calibration history/various trend/event history
functions
The gas monitor has history and trend functions. To use these functions, please contact RIKEN KEIKI.

NOTE
The data logger management program (optional) is required to use the history and trend functions.
Please contact RIKEN KEIKI for more information.
Data logger provides five functions.

(1) Interval trend
Records the change of measured concentration from power-on to power-off.
Up to 3600 latest data are recorded.
After the number of recorded data reaches 3600, the oldest data will be overwritten by the latest data.
* However, when the maximum recording time is exceeded, the oldest data will be deleted before reaching
3600.
The maximum recording time is specified as follows for each interval time.
Interval time
1020301-minute 3-minutesecondsecondsecondMaximum
10 hours 20 hours 30 hours 60 hours
180
recording time
hours
*The standard interval time is "5 minutes."

5-minute
300
hours

10minute
600
hours

Interval time can be set by "Data Logger Management Program" (optional).

(2) Alarm trend
Starting immediately after the alarm is triggered, this function records the change of measured
concentration for one hour, which is from 30 minutes before the alarm was triggered until 30 minutes after
the alarm was triggered.
Alarm trend records the peak value of five-second time at a 5-second interval.
Last eight measurement data shall be recorded.
When the number of data exceeds eight, the oldest data will be overwritten by the latest data.

(3) Alarm event
Records the trigger of alarm as an event.
The event records the time of alarm trigger, target measurement gas and type of alarm event (AL1, AL2,
OVER).
Up to 100 latest events are recorded.
After the number of recorded events reaches 100, the oldest data will be overwritten by the latest data.

- 118 -

11 Appendix

11-1. Calibration history/various trend/event history functions(4) Trouble event
Records the trigger of fault alarm as an event.
The event records the time when the trouble was triggered, the target gas of measurement, and the typeof fault event.
Up to 100 latest events are recorded.
After the number of recorded events reaches 100, the oldest data will be overwritten by the latest data.

(5) Calibration history
Records data when the calibration is performed.
The history records the calibration time, concentration values before and after the calibration, as well as
the calibration error.
Up to 100 latest calibration data are recorded.
After the number of recorded data reaches 100, the oldest data will be overwritten by the latest data.

NOTE
The data logger function of this gas monitor is entirely based on the overwriting system (the oldest
data is deleted and the latest data is recorded).
The recorded data can be read out by the "Data Logger Management Program" (optional). See theoperating manual of "Data Logger Management Program" for more information.

- 119 -

11 Appendix

11-2. Definition of terms

11-2. Definition of terms
ppb
ppm
vol%
LEL

TWA
(Time weighted
average exposure
limit)
STEL(Short term
exposure limit)
Self-latching
Non latching(auto-reset)

Gas concentration indicated in the unit of one-billionth of the volume
Gas concentration indicated in the unit of one-millionth of the volume
Gas concentration indicated in the unit of one-hundredth of the volume
The acronym of Lower Explosive Limit.
LEL refers to the lowest concentration of a combustible gas in air capable ofcausing explosion when ignited.
An abbreviation for "TLV-TWA: Threshold Limit Value Time Weighted Average." Atime weighted average concentration of toxic substances which is considered noharm on almost all the workers' health by repeated exposure at regular work ofeight hours a day or 40 hours a week.
An abbreviation for "TLV-STEL: Threshold Limit Value Short Term Exposure Limit."
A concentration of toxic substances which does not have harmful effects on theworkers' health by 15-minute continuous exposure provided that everyday
exposure does not exceed TWA value.
One of alarm patterns. Once an alarm is triggered, this keeps the alarm activateduntil it is reset even when the alarm conditions are not met.
One of alarm patterns. When an alarm is triggered, this stops the alarm
automatically when the alarm conditions are not met.

- 120 -

11 Appendix

11-3. List of gases for reading VOC

11-3. List of gases for reading VOC
Normally, a volatile organic compound (VOC) concentration is displayed as isobutylene; however, thereading can be converted to a pre-registered gas concentration. See 'VOC reading setting' (P. 63) for thesetting. VOC<10.0eV>sensor can not detect gases which of response facter is described “-” in thefollowing list.

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)A
Acetaldehyde

C2H4O

75-07-0

3.4-

Acetamide

C2H5NO

60-35-52-

Acetic acid

C2H4O264-19-7

36.2-

Acetic anhydride

C4H6O3108-24-7

4-Acetoin

C4H8O2513-86-0

1-

Acetone

C3H6O

67-64-1

0.7

1.20

Acetophenone

C8H8O

98-86-2

0.6-

Acetyl bromide

C2H3BrO

506-96-7

3-

Acetylglycine, N-

C4H7NO3

543-24-8

2-

Acrolein

C3H4O

107-02-8

3.2-

Acrylic Acid

C3H4O279-10-7

2.7-

Alkanes, n-, C6+

CnH2n+21-

Allyl acetoacetate

C7H10O31118-84-9

1.5-Allyl alcohol

C3H6O

107-18-6

2.1

4Allyl bromide

C3H5Br

106-95-63-Allyl chloride

C3H5Cl

107-05-1

4.5-Allyl glycidyl ether

C6H10O2

106-92-30.8-Allyl propyl disulfide

C6H12S2

2179-59-1

0.4-

Ammonia

NH3

7664-41-7

8.5-

Amyl acetate

C7H14O2

628-63-7

1.8

9Amyl alcohol

C5H12O

71-41-03.5

10Amyl alcohol, tert-

C5H12O

75-85-4

1.5

2.8

Anethole

C10H12O

104-46-1

0.4-

Aniline

C6H7N

62-53-3

0.48

0.8

Anisole

C7H8O

100-66-3

0.5

0.59

Anisyl aldehyde

C8H8O2

123-11-5

0.4-

ArsineAsH37784-42-1

2.5-

8052-42-4

1-

100-52-70.9

0.9

Asphalt, petroleum fumes
B
Benzaldehyde

C7H6O- 121 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Benzene

C6H6

71-43-2

0.46

0.54

Benzene thiol

C6H5SH

108-98-5

0.7

0.8

Benzoic acid

C7H6O265-85-0

0.7-

Benzonitrile

C7H5N

100-47-0

0.7

0.8

Benzoquinone, o-

C6H4O2583-63-1

1-

Benzoquinone, p-

C6H4O2106-51-4

1-

Benzoyl bromide

C7H5BrO

618-32-6

2-

Benzyl 2-phenylacetate

C15H14O2

102-16-9

0.5-

Benzyl acetate

C9H10O2

140-11-4

0.6-

Benzyl alcohol

C7H8O

100-51-6

1.3

1.6

Benzyl chloride

C7H7Cl100-44-7

0.48

0.7

Benzyl formate

C8H8O2

104-57-4

0.8-

Benzyl isobutyrate

C11H14O2

103-28-6

0.5-

Benzyl nitrile

C8H7N

140-29-4

1-

Benzyl propionate

C10H12O2

122-63-4

0.5-

Benzylamine

C7H9N

100-46-9

0.6-

Biphenyl

C12H1092-52-4

0.4

0.6

Borneol

C10H18O

507-70-0

0.8-

BromineBr27726-95-6

15-

Bromo-2,2-dimethylpropane, 1-

C5H11Br

630-17-1

2-

Bromo-2-chloroethane, 1-C2H4BrCl

107-04-0

8-

Bromo-2-methylpentane, 1-

C6H13Br25346-33-2

2-

Bromoacetone

C3H5BrO

598-31-2

1-Bromoacetylene

C2HBr

593-61-3

4-

Bromobenzene

C6H5Br108-86-1

0.3

0.32

Bromobutane, 1-

C4H9Br109-65-9

1

14

Bromobutane, 2-

C4H9Br

78-76-2

1.5

1.6

Bromocyclohexane

C6H11Br

108-85-0

3-Bromoethane

C2H5Br

74-96-4

5-

Bromoethanol, 2-C2H5BrO

540-51-2

2-

Bromoethyl methyl ether, 2-

C3H7BrO

6482-24-2

2.5-

Bromoform

CHBr3

75-25-2

2.8-

Bromopentane, 1-

C5H11Br

110-53-2

2

3.5

Bromopropane, 1-

C3H7Br

106-94-5

1.3

70- 122 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Bromopyridine, 3-C5H4BrN

626-55-1

2-

Bromopyridine, 4-C5H4BrN

1120-87-2

2-

Bromotrimethylsilane

C3H9BrSi

2857-97-8

2-

But-2-ynal

C4H4O

1119-19-3

3-

But-3-ynal

C4H4O

52844-23-2

1.5-

Butadiene diepoxide, 1,3-

C4H6O2

1464-53-5

4-

Butadiene, 1,3-

C4H6

106-99-00.8

0.8

Butane, n-

C4H10

106-97-8

44-

Butanedione, 2,3-

C4H6O2431-03-8

0.4

0.87

Butanoic acid

C4H8O2

107-92-6

5-

Butanol, 1-

C4H10O

71-36-3

4

25

Butanol, 2-

C4H10O

78-92-2

3.0

8

Buten-3-ol, 1-

C4H8O

598-32-3

1.2

3

Butene, 1-

C4H8

106-98-9

1.5-

Butene, 2-

C4H8

107-01-7

1.3-

Butene, cis-2-

C4H8

590-18-1

1.3-

Butene, trans-2-

C4H8

624-64-6

1.3-

Butenoic acid, 3-

C4H6O2

107-93-7

2-

Butoxyethanol, 2-

C6H14O2

111-76-2

1.1-

Butoxyethoxyethanol

C8H18O3

112-34-5

1.0-

Butoxyethylacetate, 2-

C8H16O3

112-07-23-Butyl acetate

C6H12O2

123-86-4

2.4

12Butyl acetate, sec-

C6H12O2

105-46-4

2.4

5.5

Butyl acetate, tert-

C6H12O2

540-88-521.65

Butyl acrylate

C7H12O2

141-32-21.5-Butyl butyrate

C8H16O2

109-21-7

1.8-Butyl chloroformate

C5H9ClO2

592-34-7

3.2-

Butyl cyclohexan-1-ol, 4- tert-

C10H20O

98-52-21.4-Butyl cyclohexyl acetate, 2- tert-

C12H22O2

88-41-50.8-Butyl ether, n-

C8H18O

142-96-1

0.7

1.10

Butyl glycidyl ether

C7H14O22426-08-62-

Butyl iodide

C4H9I

542-69-81-Butyl isocyanate

C5H9NO

111-36-4

2.5-Butyl lactate

C7H14O3

138-22-7

2.5-- 123 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Butyl mercaptan

C4H10S

109-79-50.5-Butyl mercaptan, tert-

C4H10S

75-66-10.4-Butyl methacrylate

C8H14O2

97-88-11-Butyl propionate, n-

C7H14O2

590-01-2

1.84Butylamine, n-

C4H11N

109-73-91-Butylamine, sec-

C4H11N

513-49-50.9-Butylamine, tert-

C4H11N

75-64-90.91.5Butylbenzene

C10H14

104-51-8

0.5

0.45

Butylbenzene, sec-

C10H14135-98-80.4

0.4

Butylbenzene, tert-

C10H1498-06-60.4

0.4

Butylene carbonate, 1,2-

C5H8O34437-85-82-Butylphenol, o-sec-

C10H14O

89-72-5

0.9-

Butyn-1-ol, 2-

C4H6O

764-01-2

1.5-

Butyn-2-one

C4H4O

1423-60-5

3-Butyraldehyde

C4H8O

123-72-8

1.6

1.9

Butyrolactone, gamma-

C4H6O296-48-0

15-

Butyryl chloride

C4H7ClO

141-75-3

3-Camphene

C10H16565-00-4

0.5

0.4

Camphor

C10H16O

76-22-2

0.4-

Carbon disulfide

CS2

75-15-0

1.4

1.3

Carbon suboxide

C3O2504-64-3

10-

Carbon tetrabromide

CBr4558-13-4

3-

CareneC10H16

13466-78-9

0.5-

Carvacrol

C10H14O

499-75-2

0.8-

Carvone, R-

C10H14O

6485-40-1

1

1.5

Caryophyllene

C15H2413877-93-5

0.4-

Chloramine

ClH2N

10599-90-3

2-Chloro-1,1-difluoroethene, 2-

C2HClF2

359-10-4

1.5-

Chloro-2-propanone, 1-

C3H5ClO

78-95-5

1-Chloroacetaldehyde

C2H3ClO

107-20-0

3-Chlorobenzene

C6H5Cl108-90-7

0.36

0.5

Chlorobutane, 1-

C4H9Cl109-69-3

10-Chlorobutane, 2-

C4H9Cl

78-86-4

8-

Chlorocyclohexane

C6H11Cl542-18-7

4

20C- 124 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Chloroethyl methyl ether, 2-

C3H7ClO

627-42-9

2.6-

Chloromethoxyethane

C3H7ClO

3188-13-4

4-

Chloroprene

C4H5Cl126-99-8

1.3-

Chloropyridine, 2-

C5H4ClN

109-09-1

1-

Chlorostyrene, o-

C8H7Cl2039-87-4

0.4-

Chlorotoluene, m-

C7H7Cl108-41-8

0.5-

Chlorotoluene, o-

C7H7Cl95-49-8

0.5-

Chlorotoluene, p-

C7H7Cl

106-43-4

0.39

0.3

Chlorotrifluoroethylene

C2ClF379-38-9

1-

Cinnamic aldehyde

C9H8O

104-55-2

0.4-

Cinnamyl acetate

C11H12O2

21040-45-9

0.4-

Cinnamyl alcohol

C9H10O

104-54-1

0.4-

Citral

C10H16O

5392-40-5

1

3.4

Citronellal

C10H18O

106-23-0

0.9-

Citronellol

C10H20O

26489-01-0

1-

Citronellol acetate

C12H22O2

150-84-5

1.5-

Citronellol formate

C11H20O2

105-85-1

1.5-

Citronellyl isobutyrate

C14H26O2

97-89-2

0.9-

Coumarin

C9H6O291-64-5

0.4-8021-39-4

1.0-

Creosote
Cresol, m-

C7H8O

108-39-4

2.2

1.5

Cresol, o-

C7H8O

95-48-7

1.1

1.5

Cresol, p-

C7H8O

106-44-5

1.1

1.5

Cresyl acetate, p-

C9H10O2

140-39-6

1-Cresyl ethyl ether, p-

C9H12O

622-60-6

0.8-

Cresyl methyl ether

C8H10O

104-93-8

0.8-

Crotonaldehyde

C4H6O

4170-30-3

1-

Crotonyl alcohol

C4H8O

6117-91-5

0.8-

CumeneC9H1298-82-8

0.32

-

1.5

-

Cycloalkanes
Cyclobutanone

C4H6O

1191-95-3

1.2-

Cyclobutene

C4H6822-35-5

3-

Cycloheptane

C7H14291-64-5

1.1-

Cyclohex-2-enedione, 1,4-

C6H6O24505-38-8

1-

Cyclohexane

C6H12110-82-7

1.2

3.3- 125 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Cyclohexanethiol

C6H12S

1569-69-3

0.5-

Cyclohexanol

C6H12O

108-93-0

2.9

2.7

Cyclohexanone

C6H10O

108-94-1

1.1

1.20

Cyclohexene

C6H10

110-83-8

0.8

1.4

Cyclohexyl acetate

C8H14O2

622-45-7

1.2-

Cyclohexylamine

C6H13N

108-91-8

10.9

Cyclooctadiene

C8H1229965-97-7

1-

Cyclopentadiene

C5H6

542-92-7

0.8-

Cyclopentane

C5H10

287-92-3

12.0-

Cyclopentanone

C5H8O

120-92-3

0.7

1.0

Cyclopentene

C5H8142-29-0

1.5

140

Cyclopentene-1,3-dione, 4-

C5H4O2930-60-9

1-

Cyclopropylamine

C3H7N

765-30-0

0.8

1.7

Cymene, p-

C10H1499-87-6

0.35-

Decahydronaphthalene

C10H1891-17-8

0.9-

DecanalC10H20O

112-31-2

0.9-

DecaneC10H22

124-18-5

0.9

4.2

Decyne, 1-

C10H18764-93-2

1.3

0.83

Diacetone alcohol

C6H12O2

123-42-2

0.8

0.84

Diazine, 1,2-

C4H4N2289-80-5

3-

Diazine, 1,3-

C4H4N2289-95-2

3-

Dibromoacetylene

C2Br2624-61-3

1.5-

Dibromochloromethane

CHBr2Cl

124-48-1

10-

Dibromocyclohexane, 1,2-

C6H10Br2

5401-62-7

3-

Dibromocyclopentane

C5H8Br2

33547-17-0

3-

Dibromodichloromethane

CBr2Cl2

594-18-3

4-

Dibromoethane, 1,2-

C2H4Br2

106-93-4

2-

Dibromoethene, 1,1-

C2H2Br2

593-92-0

1.5-

Dibromoethene, 1,2-

C2H2Br2

540-49-8

1.5-

Dibromomethane

CH2Br274-95-3

1.2-

Dichloro-1,2-difluoroethene, 1,2-

C2Cl2F2

598-88-92-

Dichloro-1-propene, 2,3-

C3H4Cl2

78-88-6

1.4-

Dichloro-2,2,-difluoroethene, 1,1-

C2Cl2F2

79-35-6

1-

Dichloroacetylene

C2Cl27572-29-4

5-

D- 126 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Dichlorobenzene, o-

C6H4Cl2

95-50-1

0.5

0.5

Dichlorobenzene, p-

C6H4Cl2

106-46-7

0.5

0.5

Dichloroethene, 1,1-

C2H2Cl275-35-4

1-

Dichloroethene, 1,2-

C2H2Cl2

540-59-0

0.36

0.29

Dichloroethene, cis-1,2-

C2H2Cl2

156-59-2

0.8-

Dichloroethene, trans-1,2-

C2H2Cl2

156-60-5

0.36-

Dichloromethane

CH2Cl275-09-2

39-

Dichloromethylamine

CH3Cl2N

7651-91-4

2-

Dicyclohexylamine

C12H23N

101-83-7

0.8-

Dicyclopentadiene

C10H1277-73-60.9-68334-30-50.8-

Diesel fuelDiethoxyethane, 1,1-

C6H14O2

105-57-70.9

1.0Diethyl carbonate

C5H10O3

105-58-8

1.5-

Diethyl ether

C4H10O

60-29-70.9-Diethyl maleate

C8H12O4

141-05-92-Diethyl malonate

C7H12O4

105-53-3

4.0-

Diethyl phthalate

C12H14O4

84-66-2

1-Diethyl sulfate

C4H10SO4

64-67-5

3-Diethyl sulfide

C4H10S

352-93-2

0.6

0.5

Diethyl sulfone

C4H10O2S

597-35-3

2-Diethylacetylene

C6H10928-49-4

2-Diethylaminopropylamine, 3-

C7H18N2

104-78-9

1.2

3Diethylene glycol monoethyl
ether

C6H14O3

111-90-0

0.6-Diethylenetriamine

C4H13N3

111-40-0

0.9-Diethylhydroxylamine

C4H11NO

3710-84-7

2

1.5

Diethylsilane

C4H12Si

542-91-6

2-

Diglycidyl ether

C6H10O3

2238-07-5

3-

Dihydroeugenol

C10H14O2

2785-87-7

0.4-

Dihydrojasmone

C11H18O

1128-08-1

0.6-

Dihydromyrcenol

C10H20O

18479-58-8

0.8-

Dihydroxybenzene, 1,2-

C6H6O2120-80-9

1-Dihydroxybenzene, 1,3-

C6H6O2

108-46-3

1-

Diiodomethane

CH2I2

75-11-6

1.2-

Diisobutyl ketone

C9H18O

108-83-8

0.8

0.7

Diisobutylene

C8H16

107-39-1

0.6

0.9- 127 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Diisopropyl ether

C6H14O108-20-3

0.7

0.95

Diisopropylbenzene

C12H1825321-09-9

0.4-

Diketene

C4H4O2674-82-8

2.2-

Dimethoxybenzene, 1,4-

C8H10O2

150-78-7

1.3-

Dimethoxyethane, 1,2-

C4H10O2

110-71-4

1.2

1.2

Dimethoxymethane

C3H8O2

109-87-5

1.4

13

Dimethyl carbonate

C3H6O3616-38-6

2.0-

Dimethyl disulfide

C2H6S2624-92-0

0.2-

Dimethyl ether

C2H6O

115-10-6

1.3-

Dimethyl phthalate

C10H10O4

131-11-3

1-Dimethyl sulfoxide

C2H6OS

67-68-5

1

32

Dimethylacetamide N,N-

C4H9NO

127-19-5

1.3-

Dimethylacetylene

C4H6503-17-3

1-

Dimethylaminoethanol, 2-

C4H11NO

108-01-0

1.5-

Dimethylaniline, NN-

C8H11N

121-69-7

0.6

0.5

Dimethylboron bromide

C2H6BBr5158-50-94-Dimethylbutyl acetate

C8H16O2

108-84-9

1.6-

Dimethylcycloheptane, 1,2-C9H1813151-50-3

1.3-

Dimethylcyclohexane,1,2-

C8H16

583-57-3

0.8

0.9

Dimethylcyclopentane

C7H141192-18-3

1.2-

Dimethylethylamine, NN-

C4H11N

598-56-1

3

1.7

Dimethylformamide

C3H7NO

68-12-2

0.8

1.1

Dimethylhydrazine, 1,1-

C2H8N257-14-7

1-

Dimethyloctan-1-ol, 3,7-

C10H22O

106-21-8

1.2-

Dimethyloctan-3-ol, 3,7-

C10H22O

78-69-3

1.2-

Dimethylpentane, 2,4-

C7H16

108-08-7

1.0-

Dimethylsilane

C2H8Si

1111-74-62-

Dimethylthiophosphoryl chloride

C2H6ClO2PS

2524-03-0

1-

Di-n-butylamine

C8H19N

111-92-20.9

4

Di-n-propylamine

C6H15N

142-84-7

1

1.5

Dioxane, 1,4-

C4H8O2123-91-1

1.5

1.7

Dioxolane

C3H6O2646-06-0

1.8

4.5

Dipentene

C10H16138-86-3

0.9

0.8

Diphenyl ether

C12H10O

101-84-8

0.8

1.7

Dipropyl ether

C6H14O

111-43-3

0.8-- 128 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Dipropylene glycol

C6H14O3

110-98-5

4-

Disilane

Si2H6

1590-87-0

2-

Disulfur dibromide

Br2S213172-31-1

1.5-

Di-tert-butyl-p-cresol

C15H24O

128-37-0

0.3-

Divinylbenzene

C10H101321-74-0

0.4

0.4

Divinylbenzene, 1,3-

C10H10108-57-6

0.3

0.25

Dodecene

C12H26112-40-3

0.8-

Epichlorohydrin

C3H5ClO

106-89-8

3.4

30

Epoxypropyl isopropyl ether, 2,3-

C6H12O2

4016-14-2

1.1

1.1

Estagole

C10H12O

140-67-0

0.7-Ethanol

C2H6O

64-17-5

8.7-

Ethanolamine

C2H7NO

141-43-5

3-Ethoxy-2-methylpropane, 1-

C6H14O

627-02-1

0.8-

Ethoxy-2-propanol, 1-

C5H12O2

1569-02-4

2-

Ethoxy-butane, 2-

C6H14O

19316-73-5

0.8-

Ethoxyethanol, 2-

C4H10O2

110-80-525Ethoxyethyl acetate, 2-

C6H12O3

111-15-93-Ethyl 2,2,2-trifluoroethyl ether

C4H7F3O

461-24-55-Ethyl 2-methylbutyrate

C7H14O27452-79-121.8Ethyl acetate

C4H8O2141-78-63.640Ethyl acetoacetate

C6H10O3

141-97-93-Ethyl acrylate

C5H8O2140-88-5215Ethyl benzoate

C9H10O2

93-89-00.9-Ethyl butyrate

C6H12O2

105-54-413.3Ethyl chloroformate

C3H5O2Cl

541-41-383-Ethyl cyanoacrylate

C6H7O2N

7085-85-01.5-Ethyl decanoate

C12H24O2

110-38-31.8-Ethyl formate

C3H6O2109-94-429.8-

Ethyl hexanoate

C8H16O2

123-66-0

2.63.3

Ethyl hexanol, 2-

C8H18O

104-76-7

1.5-Ethyl hexyl acrylate, 2-

C11H20O2

103-11-71-Ethyl iodide

C2H5I

75-03-61.20.30

Ethyl isopropyl ketone

C6H12O

565-69-5

0.8

-

E

- 129 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Ethyl lactate

C5H10O3

97-64-335Ethyl mercaptan

C2H6S

75-08-1

0.56

0.55

Ethyl methacrylate

C6H10O2

97-63-21.5

1.6Ethyl methyl carbonate

C4H8O3623-53-0

1.5-Ethyl morpholine, 4-

C6H13NO

100-74-30.6-Ethyl octanoate

C10H20O2

106-32-1

2.3-Ethyl phenyl acetate

C10H12O2

101-97-31.2-Ethyl propanoate

C5H10O2

105-37-326Ethyl tert-butyl ether

C6H14O

637-92-30.6-Ethyl-2-methyl benzene, 1-

C9H12

611-14-3

0.45

0.5

Ethyl-3-ethoxypropionate

C7H14O3

763-69-93-Ethylacetylene

C4H6

107-00-63-Ethylamine

C2H7N

75-04-71-Ethylbenzene

C8H10

100-41-40.50.6Ethylcyclohexane

C8H16

1678-91-711.3

Ethylene

C2H474-85-18-Ethylene carbonate

C3H4O396-49-13-Ethylene glycol

C2H6O2

107-21-1209Ethylene glycol diacetate

C6H10O4

111-55-74-Ethylene glycol monopropyl
ether

C5H12O2

2807-30-93-Ethylene oxide

C2H4O

75-21-815-Ethylenediamine

C2H8N2

107-15-30.810Ethyleneimine

C2H5N

151-56-42-Ethylhexanal, 2-

C8H16O

123-05-71.5-Ethylhexanoic acid, 2-

C8H16O2

149-57-52.0

16Ethylhexenal, 2-

C8H14O

645-62-5

1.3-

Eucalyptol

C10H18O

470-82-6

0.6-

Eugenol

C10H12O2

97-53-0

0.4-

Eugenol methyl ether

C11H14O2

93-15-2

0.4-

Fenchol

C10H18O

1632-73-1

0.4-

Ferrocene

C10H10Fe

102-54-5

0.8-

Fluorobenzene

C6H5F

462-06-6

0.8

0.83

Fluorobenzoic acid, 4-

C7H5FO2

456-22-4

2-FormamideCH3ON

75-12-7

2-F- 130 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Furan

C4H4O

110-00-9

0.4-

Furfural

C5H4O298-01-1

0.82-

Furfuryl alcohol

C5H6O298-00-0

2-

Furfuryl mercaptan

C5H6OS

98-02-20.5-

8006-61-9

0.8

1

G
Gasoline
Geranial

C10H16O

141-27-5

0.6-

Geraniol

C10H18O

106-24-1

0.7-

Geranyl acetate

C12H20O2

105-87-3

1.2-

GermaneGeH47782-65-2

10-Glutaraldehyde

C5H8O2111-30-8

0.9-

Glycidyl methacrylate

C7H10O3

106-91-2

1.2-

Glycolaldehyde

C2H4O2141-46-8

5.0-

GlyoxalC2H2O2

107-22-2

1-

GuaiacolC7H8O290-05-1

0.8-

Heptan-2-one

C7H14O

110-43-0

0.7

0.97

Heptan-3-one

C7H14O

106-35-4

0.8

0.81

Heptane

C7H16

142-82-5

1.6

11

HeptanolC7H16O

53535-33-4

1.7-

Heptene, 1-C7H14592-76-7

0.9

1.1

Heptylcyclopentan-1-one, 2-

C12H22O

137-03-1

0.8-

Heptyne, 1-C7H12628-71-7

2-

Hex-1-en-3-ol

C6H12O

4798-44-1

0.9-

Hexachlorodisilane

Cl6Si213465-77-5

8-

Hexamethyldisilazane,
1,1,1,3,3,3-.

C6H19NSi2

999-97-3

1-

Hexamethyldisiloxane

C6H18OSi2

107-46-0

0.3-

Hexamethylene diisocyanate

C8H12N2O2

822-06-0

1.5-

Hexan-2-one

C6H12O

591-78-6

0.8

0.7

HexaneC6H14

110-54-3

2.6

13

Hexanoic acid

C6H12O2

142-62-1

3-

Hexanol

C6H14O

111-27-3

2

7Hexene, 1-

C6H12592-41-6

0.9

1.1

Hexenyl acetate, cis-3-

C8H14O23681-71-8

1.5

1.2

Hexenyl butyrate, cis-3-

C10H18O2

16491-36-4

1.5

-

H

- 131 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Hexylaldehyde

C6H12O

66-25-1

0.6

1.8

Hydrazine

H4N2

302-01-2

3-

Hydrogen iodide

HI10034-85-2

5-

Hydrogen selenide

H2Se

7783-07-5

2-

Hydrogen sulfide

H2S7783-06-4

4-

Hydrogen tellurideH2Te7783-09-7

1.5-

Hydroxybutanal, 3-

C4H8O2

107-89-1

2.0-

Hydroxycitronellal

C10H20O2

107-75-5

1-

Hydroxyethyl acrylate

C5H8O3818-61-1

1.2-

Hydroxylamine

H3NO

7803-49-8

2-

Hydroxypropyl acrylate, 2-

C6H10O3

999-61-1

1.5-

IndeneC9H895-13-6

0.5

0.4

IndoleC8H7N

120-72-9

0.4-

IodineI27553-56-2

0.2

0.1

Iodobenzene

C6H5I

591-50-4

0.2-

Iodoethene

C2H3I

593-66-8

1.2-

Iodoform

CHI3

75-47-8

1.5-

Iodomethane

CH3I

74-88-4

0.4-68551-17-7

1

-

I

Isoalkanes, C10-C13
Isoamyl acetate

C7H14O2

123-92-2

1.6

6

Isoamyl salicilate

C12H16O3

87-20-71-

Isoamylene

C5H10513-35-910.86

Isobornyl acetate

C12H20O2

125-12-2

0.4-

Isobutane

C4H1075-28-58-Isobutanol

C4H10O

78-83-1

3.5

13

Isobutyl acetate

C6H12O2

110-19-0

2.3

10Isobutyl acrylate

C7H12O2

106-63-8

1.3

5Isobutylbenzene

C10H14538-93-2

0.4

0.4

Isobutylene

C4H8

115-11-711Isobutylene epoxide

C4H8O

558-30-5

3-Isobutyraldehyde

C4H8O

78-84-2

1.2-

Isobutyric acid

C4H8O279-31-2

4

15

Isodecanol

C10H22O

25339-17-7

0.9-

Isoeugenol

C10H12O2

97-54-1

0.4-- 132 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Isoheptane

C7H16591-76-4

1.2-

Isojasmone

C11H18O

95-41-00.7-

Isomenthone

C10H18O

1196-31-2

0.6-

Isononanal

C9H18O

5435-64-3

9.0

1.4

Isononanol

C9H20O

3452-97-9

1.5-

Isooctane

C8H18

565-75-3

0.74

3.2

Isooctanol

C8H18O

26952-21-6

1.7-

Isopentane

C5H1278-78-44.0-

Isopentene

C5H10563-46-2

0.8-

Isophorone

C9H14O

78-59-10.8

1.0Isophorone diisocyanate

C12H18N2O2

4098-71-9

0.6-

Isoprene

C5H878-79-50.8-

Isopropanol

C3H8O

67-63-04.4

25

Isopropanolamine

C3H9NO

78-96-6

1.5-

Isopropoxyethanol, 2-

C5H12O2

109-59-1

1.5

1.5

Isopropyl acetate

C5H10O2

108-21-4

2.2

8

Isopropyl chloroformate

C4H7O2Cl

108-23-6

1.6-

Isopropyl mercaptan

C3H8S

75-33-2

0.56-

Isopropyl nitrite

C3H7NO2

541-42-44-Isopropylamine

C3H9N

75-31-01.2

1Isopropylaminoethanol, 2-

C5H13NO

109-56-82-Isopropylcyclohexane

C9H18696-29-70.91.1

Isothiazole

C3H3NS

288-16-4

3-Isovaleraldehyde

C5H10O

590-86-3

1.3

1.5

Isovaleric acid

C5H10O2

503-74-2

3.0

25

Isoxazole

C3H3NO

288-14-2

6-

Jasmal

C11H22O3

1322-17-4

1.4-

Jasmone, cis-

C11H16O

488-10-8

0.5-

Jet Fuel JP-4

0.8

0.7

Jet Fuel JP-5

0.7

0.6

Jet Fuel JP-8

0.7

0.6

8008-20-6

0.8

0.7

463-51-4

3

-

J

K
Kerosene
KeteneC2H2O- 133 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)L
Linalool oxide

C10H18O2

14049-11-7

0.6-

Linalyl acetate

C12H20O2

115-95-7

0.9-

Maleic anhydride

C4H2O3108-31-6

2-

Menthol

C10H20O

1490-04-6

0.5-

Menthone

C10H18O

89-80-5

0.4-

Mercaptoacetic acid

C2H4O2S

68-11-1

1-

Metaldehyde

C8H16O4

108-62-3

2.0-

Methacrylamide

C4H7NO

79-39-0

2.0-

Methacrylic acid

C4H6O279-41-4

2.3-

Methacrylonitrile

C4H5N

126-98-7

5-

Methanol

CH4O

67-56-1

200-

Methoxy-1-butanol, 3-

C5H12O22517-43-3

3-

Methoxy-1-propanol, 2-

C4H10O2

1589-47-5

2-

Methoxy-2,2-dimethylpropane

C6H14O

1118-00-9

0.7-

Methoxybutyl acetate, 3-

C7H14O34435-53-4

2-

Methoxyethane

C3H8O

540-67-0

1.0-

Methoxyethanol, 2-

C3H8O2

109-86-4

2.7-

Methoxyethene

C3H6O

107-25-5

1-

Methoxyethoxyethanol, 2-

C5H12O3

111-77-3

1.4-

Methoxyethyl acetate

C5H10O3

110-49-6

2.7-

Methoxyethyl ether, 2-

C6H14O3

111-96-6

0.8-

Methoxymethylethoxy-2-propanol C7H16O3

34590-94-8

1.3-

Methoxypropan-2-ol, 1-

C4H10O2

107-98-22

2.7

Methoxypropane, 2-

C4H10O

598-53-8

0.9-

Methoxypropyl acetate

C6H12O3

108-65-6

1.2

2.1

Methyl 2-methylpropanoate

C5H10O2

547-63-7

2-

Methyl acetate

C3H6O279-20-9

5.2-

Methyl acetoacetate

C5H8O3105-45-3

3-

Methyl acrylate

C4H6O2

96-33-3

3.4

80

Methyl anthranilate

C8H9NO2

134-20-3

0.4-

Methyl benzoate

C8H8O2

93-58-3

1.2-

Methyl bromide

CH3Br

74-83-9

1.9-

Methyl dimethylacrylate

C6H10O2

924-50-5

2.5

-

M

- 134 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Methyl ethyl ketone

C4H8O

78-93-3

0.8

2

Methyl ethyl ketone peroxides

C8H18O6

1338-23-4

0.8-

Methyl heptyne carbonate

C9H14O2

111-12-6

1.3-

Methyl ionone

C14H22O

1335-46-2

0.4-

Methyl isobutyl ketone

C6H12O

108-10-1

0.8

1.01

Methyl isocyanate

C2H3NO

624-83-9

5-

Methyl isopropyl ketone

C5H10O

563-80-4

0.8

0.96

Methyl isothiocyanate

C2H3NS

556-61-6

0.6-

Methyl mercaptan

CH4S

74-93-1

0.7

0.6

Methyl methacrylate

C5H8O280-62-6

1.6

2.1

Methyl phenyl acetate

C9H10O2

101-41-7

0.4-

Methyl propargyl ether

C4H6O

627-41-8

2-

Methyl propionate

C4H8O2554-12-1

1.5

36

Methyl propynoate

C4H4O2922-67-8

10-

Methyl salicylate

C8H8O3

119-36-8

0.8-

Methyl sulfide

C2H6S

75-18-3

0.5

0.7

Methyl tert-butyl ether

C5H12O

1634-04-4

0.8

1.02

Methyl thiocyanate

C2H3NS

556-64-9

2-

Methyl thioglyconate

C3H6O2S

2365-48-2

1-

Methyl undecanal, 2-

C12H24O

110-41-8

1.1-

Methyl vinyl ketone

C4H6O

78-94-4

0.6-

Methyl-1-butene, 3-

C5H10563-45-1

0.8-

Methyl-2-butanol, 3-

C5H12O

598-75-4

3.3-

Methyl-2-hexenoic acid, trans-3-

C7H12O227960-21-0

1.5-

Methyl-2-propen-1-ol, 2-

C4H8O

513-42-8

1.1

1.6

Methyl-2-pyrrolidinone, N-

C5H9NO

872-50-4

0.9-

Methyl-5-hepten-2-one, 6-

C8H14O

110-93-0

0.8

0.76

Methylamine

CH5N

74-89-5

1.4-

Methylbutan-1-ol, 3-

C5H12O

123-51-3

3

10

Methylbutanal, 2-

C5H10O

96-17-3

1.5

1.3

Methylbutanol

C5H12O

137-32-6

1.5-

Methylbutyric acid, 2-

C5H10O2

116-53-0

3.5

20

Methylcyclohexane

C7H14

108-87-2

1.1

1

Methylcyclohexanol

C7H14O

25639-42-3

2.4-

Methylcyclohexanol, 4-

C7H14O

589-91-3

2.4-- 135 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Methylcyclohexanone, 2-

C7H12O

583-60-8

1-Methylcyclopentane

C6H1296-37-7

1.5-

Methylenepentane, 3-

C6H12760-21-4

0.8-

Methylheptan-3-one, 5-C8H16O

541-85-5

0.8

0.88

Methylhexan-2-one, 5-C7H14O

110-12-3

0.8

0.91

Methylhydrazine

CH6N2

60-34-4

1.3-

Methylpent-3-en-2-one, 4-

C6H10O

141-79-7

0.7

0.66

Methylpentan-2-ol, 4-

C6H14O

108-11-2

2.8

3

Methylpentane, 2-

C6H14

107-83-5

1.5

34

Methylpentane, 3-

C6H14

96-14-0

1.5

24Methylpentane-2,4-diol, 2-

C6H14O2

107-41-5

4-

Methylpropanoyl chloride, 2-

C4H7ClO

79-30-1

6-

Methylpyrrole, N-

C5H7N

96-54-8

0.5

0.8

Methylstyrene

C9H1025013-15-4

0.5

0.5

Methylthiopropional, 3-

C4H8OS3268-49-3

2-

Mineral oil

8042-47-5

0.8

0.7

Mineral spirits

64475-85-0

0.8

0.7

Monoisobutanolamine

C4H11NO

124-68-5

1.6-

Morpholine

C4H9NO

110-91-822

Myrcene

C10H16

123-35-3

0.5-

Naphtha, hydrotrated heavy

CnH(2n+2)

64742-48-9

1.0-

Naphthalene

C10H891-20-3

0.4

0.4

Naphthol methyl ether, 2-

C11H10O

93-04-9

0.5-

Neopentane

C5H12463-82-1

3.0-

Neopentyl alcohol

C5H12O

75-84-3

2.0-

Nitric oxide

NO

10102-43-9

8-

Nitrobenzene

C6H5NO2

98-95-3

1.7-

Nitrogen dioxide

NO210102-44-0

10-

N-Methylolacrylamide

C4H7NO2

924-42-5

2.0-

NonaneC9H20

111-84-2

1.3

4.7

Nonanol (mixed isomers)

C9H20O

143-08-8

1.2-

Nonene (mixed isomers)

C9H1827215-95-8

0.8-

Nonene, 1-

C9H18

124-11-8

0.55-

Norbornadiene, 2,5-

C7H8

121-46-0

0.6

0.70

N

- 136 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)O
Octamethyltrisiloxane

C8H24O2Si3

107-51-7

0.3-

OctaneC8H18

111-65-9

1.3

7

Octanol (mixed isomers)

C8H18O

111-87-5

1.5-

Octene (mixed isomers)

C8H16

25377-83-7

0.9-

Octene, 1-

C8H16

111-66-0

0.58

1.1

Oxalyl bromide

C2Br2O215219-34-8

5-

Oxydiethanol, 2,2-

C4H10O3

111-46-6

2.0-

Paraffin wax, fume8002-74-2

1-

Paraffins, normal

64771-72-8

1

-

P

Paraldehyde

C6H12O3

123-63-7

2.0

4.8

Pentacarbonyl iron

FeC5O513463-40-6

1-

Pentan-2-one

C5H10O

107-87-9

0.8

1.03

Pentan-3-one

C5H10O

96-22-00.8

0.75

Pentanal

C5H10O

110-62-3

1.2

1.75

Pentandione, 2,4-

C5H8O2123-54-6

0.8

0.85

PentaneC5H12

109-66-0

5-Pentanoic acid

C5H10O2

109-52-4

452

Pentanol, 2-

C5H12O

6032-29-7

1.5

16

Pentanol, 3-

C5H12O

584-02-1

1.5

3.5

Pentene, 1-

C5H10

109-67-1

1.3

1.00

Pentylcyclopentan-1-one, 2-

C10H18O

4819-67-4

1-

Pentylcyclopentane

C10H203741-00-2

1.1-

Pentyne, 1-

C5H8

627-19-0

3-

Peracetic acid

C2H4O379-21-0

2-

Perfluorobutadiene

C4F6

685-63-2

3-

Perfluoro-tert-butylamine

C4H2F9N

2809-92-9

5-8032-32-4

0.9-

Petroleum ether
Phellandrene

C10H1699-83-2

0.8-

Phenethyl methyl ether, 2-

C9H12O

3558-60-9

0.6-

Phenol

C6H6O

108-95-2

1.2

1.1

Phenoxyethanol, 2-

C8H10O2

122-99-6

0.5

10

Phenyl chloroformate

C7H5ClO2

1885-14-9

1.1-

Phenyl ethyl isobutyrate, 2-

C12H16O2

103-48-0

1.5-- 137 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)Phenyl propene, 2-

C9H10

98-83-9

0.4

0.4

Phenyl-2,3-epoxypropyl ether

C9H10O2

122-60-1

0.8-

Phenylacetaldehyde

C8H8O

122-78-1

0.7-

Phenylacetic acid

C8H8O2103-82-2

1-

Phenylcyclohexane

C12H16827-52-1

0.4-

Phenylethyl acetate, 1-

C10H12O2

93-92-5

0.7-

Phenylethyl alcohol, 2-

C8H10O

60-12-8

1.2-

Phosphine

PH37803-51-2

2-

Picoline, 3-

C6H7N

108-99-6

0.9

0.8

8002-09-3

1-

Pine oil
Pinene, α-C10H1680-56-8

0.27

0.48

Pinene, β-C10H16

127-91-3

0.27

0.59

Piperazine

C4H10N2

110-85-0

0.8-

Piperidine

C5H11N

110-89-4

0.9

0.8

Piperylene

C5H8504-60-9

0.7

1.0

Prop-2-yn-1-ol

C3H4O

107-19-7

2.9-

Propadiene

C3H4

463-49-0

1-

Propan-1-ol

C3H8O

71-23-84.8

40

Propanamide

C3H7NO

79-05-02-

Propane-1,2-diol

C3H8O257-55-63-

Propanolamine

C3H9NO

156-87-6

1.5-

Propargyl chloride

C3H3Cl624-65-7

2-

Propen-1-imine, 2-

C3H5N

73311-40-72-

PropeneC3H6

115-07-1

1.4

2

Propiolic acid

C3H2O2471-25-0

8-

Propionaldehyde

C3H6O

123-38-6

1.7-

Propionic acid

C3H6O2

79-09-48-

Propoxy-2-propanol, 1-

C6H14O2

1569-01-3

1.1

1.6

Propyl acetate, n-

C5H10O2

109-60-4

2.5

17Propyl benzene

C9H12103-65-1

0.5

0.55

Propyl butanoate

C7H14O2

105-66-8

2.3

2.7

Propyl formate

C4H8O2110-74-7

10-Propyl iodide

C3H7I

107-08-4

1-

Propylamine, n-

C3H9N

107-10-8

1-Propylbenzene (all isomers)

C9H1274296-31-4

0.45

-

- 138 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Propylene carbonate

C4H6O3108-32-7

2-Propylene glycol ethyl ether acetate

C7H14O398516-30-4

1.2-

Propylene oxide

C3H6O

75-56-9

2.7-

Propyleneimine

C3H7N

75-55-8

1.3-

PropyneC3H4

74-99-7

4-

Pyrazine

C4H4N2

290-37-9

3-

Pyridine

C5H5N

110-86-1

0.8

0.87

Pyridinol, 4-

C5H5NO

626-64-2

3-

Pyridylamine, 2-

C5H6N2504-29-0

0.8-

PyrroleC4H5N

109-97-7

0.6-

Pyrrolidine

C4H9N

123-75-1

0.4

20

Pyruvaldehyde

C3H4O2

78-98-8

0.7-

C10H18O

16409-43-1

0.8-

Sec-amyl acetate

C7H14O2

626-38-0

2-

StibineSbH37803-52-3

1.5-

StyreneC8H8100-42-5

0.35

0.52

Terpineol, α-C10H18O

98-55-5

0.8-

Terpinolene

C10H16586-62-9

0.59

0.9

Terpinyl acetate, α-C12H20O2

80-26-2

1.2-

Tert-amyl methyl ether

C6H14O

994-05-8

0.8-

Tert-butanol

C4H10O

75-65-0

2.6

2.8

Tert-butyl bromide

C4H9Br507-19-7

1.5

1.6

Tert-butyl formate

C5H10O2762-75-4

8-

Tetrabromoethane, 1,1,2,2-

C2H2Br4

79-27-62-

Tetracarbonylnickel

NiC4O4

13463-39-3

1-

Tetrachloroethylene

C2Cl4

127-18-4

0.44

0.33

Tetrachloropyridine, 2,3,5,6-

C5HCl4N

2402-79-1

1-

Tetraethyl orthosilicate

C8H20O4Si

78-10-4

2

3

Tetrafluoroethylene

C2F4

116-14-3

15-

Tetrahydrofuran

C4H8O

109-99-9

0.8

2.8

Tetrahydronaphthalene

C10H12

119-64-2

0.4-

Tetrahydropyran

C5H10O

142-68-7

3-R
Rose oxide, cisST

- 139 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Tetrahydrothiophene

C4H8S

110-01-0

0.6

0.5

Tetramethyl orthosilicate

C4H12O4Si

681-84-5

2.0-

Tetramethyl succinonitrile

C8H12N23333-52-6

1-

Tetramethylbenzene (all isomers)

C10H1495-93-2

0.3-

Tetramethylbutane, 2,2,3,3-

C8H18

594-82-1

1-

Tetramethylgermane

C4H12Ge

865-52-1

2-

Tetramethylguanidine, N,N,N',N'C5H13N380-70-6

0.6-

Tetramethylsilane

C4H12Si

75-76-3

2-

Thioacetic acid

C2H4OS

507-09-5

2-

Thiocarbonyl fluoride

CSF2

420-32-6

6-

Thiocyanogen

C2S2N2505-14-6

8-

Thioformaldehyde trimer

C3H6S3291-21-4

1.5-

Thiophene

C4H4S

110-02-1

0.4

0.5

Thiophosgene

CSCl2

463-71-8

1-

Thymol

C10H14O

89-83-8

0.7-

Titanium-n-propoxide

C12H28O4Ti

3087-37-4

3-

Toluene

C7H8

108-88-3

0.5

0.60

Toluene-2,4-diisocyanate

C9H6N2O2

584-84-9

1.6-

Toluenesulfonyl chloride, p-

C7H7SO2Cl

98-59-93-

Toluidine, o-

C7H9N

95-53-4

0.5-

Tolylaldehyde, p-

C8H8O

104-87-0

0.8-

Triazine, 1,3,5-

C3H3N3290-87-9

6-Tributyl phosphate

C12H27O4P

126-73-8

5-Tributylamine

C12H27N

102-82-9

1.2

0.6

Trichlorobenzene, 1,2,4-

C6H3Cl3120-82-1

0.6

0.5

Trichloroethylene

C2HCl379-01-6

0.7

0.8

Triethyl phosphate

C6H15O4P

78-40-0

3.5-

Triethyl silane

C6H16Si

617-86-7

2-

Triethylamine

C6H15N

121-44-8

0.9

1.1

Triethylbenzene

C12H1825340-18-5

0.35

-

Triethylene aluminum

C6H15Al

97-93-8

1-

Trifluoroethene

C2HF3

359-11-5

5-

Trifluoroethyl methyl ether, 2,2,2-

C3H5F3O

460-43-5

10-

Trifluoroiodomethane

CF3I2314-97-8

2-

Trimethoxymethane

C4H10O3

149-73-5

1

10- 140 -

11 Appendix

11-3. List of gases for reading VOC

Gas name

Formula

CAS No.

Response
factor
(10.6eV)Response
factor
(10.0eV)

Trimethoxyvinylsilane

C5H12O3Si

2768-02-7

1.0-

Trimethylamine

C3H9N

75-50-3

0.5

0.5

Trimethylbenzene mixtures

C9H1225551-13-7

0.3

0.3

Trimethylbenzene, 1,3,5-

C9H12

108-67-8

0.4

0.5

Trimethylborate

C3H9BO3

121-43-7

1-

Trimethylcyclohexane, 1,2,4-

C9H18

2234-75-5

1-

Trimethylene oxide

C3H6O

503-30-0

1.5-

Trimethylsilane

C3H10Si

993-07-7

1-

Trioxane

C3H6O3110-88-3

2-

Turpentine

C10H169005-90-7

0.6

-

1

1

TVOC
U
Undecane

C11H241120-21-4

0.9

3.1

Vanillin

C8H8O3121-33-5

1-Vinyl acetate

C4H6O2

108-05-4

1.1

1.77

Vinyl bromide

C2H3Br593-60-2

1.5

0.9

Vinyl chloride

C2H3Cl

75-01-4

2.1

1.9

Vinyl ethyl ether

C4H8O

109-92-2

0.6

0.95

Vinyl fluoride

C2H3F

75-02-52-

Vinyl-2-pyrrolidinone, 1-

C6H9NO

88-12-0

0.9

3.3

Vinylcyclohexene

C8H12100-40-3

0.7

0.7

Vinylene carbonate

C3H2O3872-36-6

1

5Vinylidene difluoride

C2H2F275-38-7

5-Vinylsilane

C2H6Si

7291-09-0

1.5-

Xylene mixed isomers

C8H10

1330-20-7

0.40

0.59

Xylene, m-

C8H10108-38-3

0.4

0.53

Xylene, o-C8H1095-47-6

0.6

0.6

Xylene, p-

C8H10106-42-3

0.4

0.59

Xylidine, all

C8H11N

1300-73-8

0.7

0.6

V

X

- 141 -