PT0E-2241

Portable Gas Leak Checker

SP-230 Series

SP-230 (Type F)
SP-230 (Type H2)
Operating Manual(PT0-213)

Contents
1. Product Overview ........................................................................................................................................ 2
1-1. Introduction ............................................................................................................................................ 2
1-2. Intended use .......................................................................................................................................... 2
1-3. DANGER, WARNING, CAUTION, and NOTE ...................................................................................... 3
1-4. Checking standards and explosion-proof specifications ....................................................................... 3
2. Important Safety Information....................................................................................................................... 4
2-1. Danger information ................................................................................................................................ 4
2-2. Warning information .............................................................................................................................. 5
2-3. Caution information ............................................................................................................................... 6
2-4. Important notes related to explosion resistance ................................................................................... 8
3. Product Configuration ................................................................................................................................. 9
3-1. Main unit and accessories ..................................................................................................................... 9
3-2. Part names and functions.................................................................................................................... 12
4. Alarm Functions ........................................................................................................................................ 14
4-1. Gas alarm activation ............................................................................................................................ 14
4-2. Fault alarm activation .......................................................................................................................... 14
5. Usage Instructions .................................................................................................................................... 15
5-1. Usage note .......................................................................................................................................... 15
5-2. Preparing startup ................................................................................................................................. 15
5-3. Battery replacement ............................................................................................................................ 15
5-4. Startup procedure ................................................................................................................................ 17
5-5. Basic operation flow ............................................................................................................................ 19
5-6. Gas detection ...................................................................................................................................... 20
5-7. Selecting alarm setpoints .................................................................................................................... 21
5-8. Fresh air adjustment ............................................................................................................................ 22
5-9. Snap logger ......................................................................................................................................... 23
5-10. Peak hold function ............................................................................................................................... 24
5-11. Toggling the operation tone and alarm sound on and off ................................................................... 25
5-12. Turning on the light .............................................................................................................................. 26
5-13. Turning off the power ........................................................................................................................... 26
6. Display Mode Setting Procedure .............................................................................................................. 27
6-1. Selecting display mode ....................................................................................................................... 27
6-2. Target gas selection setting ................................................................................................................. 29
6-3. Log data display .................................................................................................................................. 32
7. User Mode Setting Procedure................................................................................................................... 33
7-1. Selecting user mode ............................................................................................................................ 33
7-2. Date and time setting .......................................................................................................................... 35
7-3. Clock function ON/OFF setting ........................................................................................................... 36
7-4. Function button setting ........................................................................................................................ 37
8. Maintenance .............................................................................................................................................. 39
8-1. Maintenance intervals and maintenance items ................................................................................... 39
8-2. Cleaning instructions ........................................................................................................................... 41
8-3. Parts replacement ............................................................................................................................... 41
9. Storage and Disposal ................................................................................................................................ 44
9-1. Procedures for storage or when not in use for extended periods ....................................................... 44
9-2. Procedures for use after storage......................................................................................................... 44
9-3. Product disposal .................................................................................................................................. 45
10. Troubleshooting ....................................................................................................................................... 46
11. Product Specifications ............................................................................................................................. 48
12. Appendix.................................................................................................................................................. 49
12-1. Terminology ......................................................................................................................................... 49

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1. Product Overview

1

1.

Product Overview

1-1. Introduction
Thank you for purchasing this SP-230 Series Portable Gas Leak Checker (“the product” hereinafter).
Please confirm that the model number of the product you purchased matches the model number of the
product covered by this manual.
The product should be used only by fully-trained personnel.
The maintenance procedures described in this manual should be performed only by fully-trained
personnel. Any maintenance procedure not described in this manual must be performed by RIKEN KEIKI
or our certified service engineers. Please contact RIKEN KEIKI.
This manual describes how to use the product and provides product specifications. Make sure you haveread and fully understood the contents of this manual before using the product. This applies both to firsttime users and those who have previously used the product.
Keep this manual in a handy place so that you can refer to it at any time.
The contents of this manual are subject to change without notice to allow product improvements. Any
duplication or reproduction of this manual without permission is prohibited, whether in whole or in part.
Regardless of the warranty period, RIKEN KEIKI does not accept any liability for accidents or damage
resulting from use of the product. Be sure to read the warranty policy set forth on the warranty.

1-2. Intended use
The product is designed to detect single gases, such as R600a or hydrogen, in the atmosphere.
The product is available in two models: Type F for detecting fluorocarbon gas leaks and Type H2 fordetecting hydrogen leaks. The detection results are not intended to assure life or safety.

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1. Product Overview

1-3. DANGER, WARNING, CAUTION, and NOTEThis manual uses the following headings to ensure safe and effective work:

DANGER

This indicates situations in which improper handling may result in
fatal or serious injury to persons or serious damage to property.

WARNING

This indicates situations in which improper handling may result inserious injury to persons or serious damage to property.

CAUTION

This indicates situations in which improper handling may result inminor injury to persons or minor damage to property.

NOTE

This indicates handling tips.

1-4. Checking standards and explosion-proof
specifications
The product specifications will vary depending on the specific standards and explosion-proof certification.
Check actual product specifications before use. For CE/UKCA marking models, refer to the ‘Declaration ofConformity’ provided at the end of this manual.
To confirm the product specifications, check the nameplate affixed to the product as shown in the figure
below.

① Typical nameplate for Japan
EX model② Typical nameplate for
CE/UKCA marking model* Either nameplate ① or ② shown
above is affixed according to the
explosion-proof specifications
specified by the customer.

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2. Important Safety Information

22.

Important Safety Information

To maintain the performance of the product and to ensure safe use, always observe the following
DANGER, WARNING, and CAUTION instructions.

2-1. Danger information
DANGER
Explosion-proofing Do not modify or alter the circuitry or configuration.
When using the product in hazardous areas, the following precautions must be observed tosafeguard against static electricity hazards:① Wear anti-static clothing and conductive shoes (anti-static work shoes).
② When using the product indoors, stand on a conductive work floor (with a leakage
resistance of 10 MΩ or less).
 The ratings are as follows:
Power source:
3.0 V DC, 150 mA (Toshiba LR6 batteries × 2)
Ambient temperature:-20 °C to +55 °C
Usage If measuring inside manholes or enclosed spaces, never lean over or look into the manhole or
enclosed space. There is a danger that oxygen-deficient air or other gases may be discharged
from such locations.
 High-concentration (100 %LEL or higher) gas may be discharged from the product gas outlet. Be
sure to maintain a safe distance from flame sources.

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2. Important Safety Information

2-2. Warning information
WARNING
If an abnormality occurs
 If an abnormality is discovered in the product, contact RIKEN KEIKI immediately. Visit our
website for information on the nearest RIKEN KEIKI office.
Website:https://www.rikenkeiki.co.jp/
Sampling point pressure The product is designed to draw in gas at atmospheric pressure. There is a danger that target gas
may leak from inside the product if an excessive pressure is applied to the gas inlet or gas outletof the product. Be careful to avoid excessive pressure during use.
Fresh air adjustment in surrounding atmosphere When fresh air adjustment is performed in the atmosphere, check the atmosphere for freshness
before starting.
The presence of miscellaneous gases will make it impossible to adjust the product correctly,
resulting in the danger of erroneous detection when actual gas leaks occur.
Action when a gas alarm occurs
 A gas alarm indicates an extreme hazard. The user must take appropriate action after taking
appropriate steps to ensure safety.
Battery level check Check battery levels before using the product. The batteries may be depleted when the productis used for the first time or after extended periods without use. Replace the batteries with newones before use.
 If a low battery voltage alarm occurs, gas cannot be detected. If the alarm is issued during use,turn off the power and promptly replace the batteries in a safe place.
Miscellaneous Do not dispose of the product into fire.
 Do not attempt to wash the product, either in a washing machine or an ultrasonic cleaningmachine.
 There is a danger that oxygen-deficient air or other gases may be discharged from enclosed
locations. Never lean over or look inside openings.

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2. Important Safety Information

2-3. Caution information
CAUTION Do not use the product in locations where it may be exposed to oil or chemicals, etc.
‧ Avoid using the product in locations where the product may be splashed with liquids such as oiland chemicals.
‧ Do not place the product in locations where water or dirt accumulates. Placing the product insuch locations may cause malfunction due to water or dirt ingress into the gas inlet or otheropenings.
 The gas inlet and outlet are not waterproof. Take care to prevent water such as rainwater fromentering these parts. Failure to do so may prevent gas detection.
 The product is waterproof against freshwater and tap water. It is not waterproof against hot
water, saltwater, detergent, chemicals, or perspiration.
 Avoid deliberately submerging the product in water.
 The sensor sensitivity will be significantly reduced if dirty water, dust, or metal particles are
drawn in. Take care when using in such environments.
 If the product has been exposed to water or dirt, remove the water or dirt, and adjust as specified
to confirm that it operates correctly.
 Do not use the product in locations where the temperature exceeds the range of operating
temperatures.
‧ The operating temperature range for the product is between -20 °C and +55 °C. Avoid using
the product at high temperatures, high humidity, high pressures, or low temperatures outside
the operating range.
‧ Avoid using the product for extended periods in locations where it is exposed to direct sunlight.
‧ Avoid storing the product inside parked vehicles in hot weather.
‧ Avoid sudden humidity and temperature fluctuations.
‧ Do not leave the product in hot, humid locations for extended periods. Doing so may impair
product performance.
 Adhere to the operating humidity range to prevent condensation forming inside the product.
Condensation forming inside the product or tapered nozzle may cause clogging or gas
adsorption, which may prevent accurate gas detection. Condensation must be avoided at all
costs. In addition to the usage environment, carefully monitor the temperature and humidity of thesampling point to prevent condensation forming inside the product or tapered nozzle.
 Do not use walkie-talkies near the product.
‧ Radio waves from walkie-talkies or other radio wave transmitting devices near the product may
affect readings. If walkie-talkies or other radio wave transmitting devices are used, these must
be used away from the product where they do not affect operation.
‧ Do not use the product near devices that emit strong electromagnetic radiation (high-frequency
or high-voltage devices).
 Keep the product away from magnetic fields.
Magnetic fields may cause the product to fail or malfunction. If the product does not operatecorrectly, use it away from magnetic fields.
 Verify that the operation status display is blinking before using the product.
If the operation status display is not blinking, gas cannot be detected properly.
 Correct gas measurement is not possible if the flow confirmation icon is not rotating. Check to
confirm flow.
 Be sure to perform regular maintenance.
The product must be maintained regularly to ensure safety. Continuing to use the product withoutmaintaining it will result in sensor sensitivity variations, preventing accurate gas detection.

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2. Important Safety Information

CAUTION
Miscellaneous The gas alarm may remain active following continuous contact with gas or after contact with highconcentration gas. If this occurs, draw in fresh air for at least five minutes (recommended), thenrepeat fresh air adjustment.
 Pressing buttons unnecessarily may change the settings, preventing alarms from activatingcorrectly. Avoid performing any operations not described in this operating manual.
 Do not drop the product or subject it to impact. Doing so may degrade explosion-proof,
waterproof, dustproof, and gas detection performance.
 An abnormality alarm may be triggered if the product is subjected to strong impact. If this occurs,
turn the power off and then back on again, then confirm that the product functions correctly
before use.
 The impact resistance of the product is not a guarantee against damage or failure. Dropping the
product may affect readings. We recommend performing inspection including gas adjustment if
it has been dropped.
 Do not remove the panel sheet on the LCD display. Doing so will impair waterproof anddustproof performance.
 The usage environment may include gases that adversely affect the device sensor. The productcannot be used in the presence of the following gases:① High-concentration sulfides (e.g., H2S, SO2)
② Halogen gases (e.g., chlorine compounds)③ Silicone (Si compounds)④ High-concentration solvent gases
 Using the product in the presence of the gases listed in ① to ③ above (high-concentration
sulfides, halogen gases, silicone, etc.) may lead to dramatically reduced sensor life, inaccurate
readings, or other problems. Avoid using the device in such environments.
If gas detection is performed in the presence of gases like silicone, be sure to check the gas
sensitivity before any subsequent use of the device.
Exposure to the gases mentioned in ④ above (high-concentration solvent gases) may result incracks occurring in the device. Avoid contact with high-concentration solvent gases during use.
Battery replacement
 Always turn off the power for the product before replacing the batteries.
 When replacing the batteries, replace both with new batteries at the same time.
 Note the polarity of the batteries.
Usage
 The operating time will be reduced due to battery performance in cold environments.
 The response of the LCD display may slow at low temperatures.
 Always perform fresh air adjustment under conditions of pressure, temperature, and humidity
similar to those in the operating environment and in fresh air.
Wait for the reading to stabilize before performing fresh air adjustment.
 If there is a temperature difference of 15 °C or more between the storage and usage locations,
turn on the power and allow the product to stand and acclimatize for about 10 minutes in anenvironment similar to the usage location before performing fresh air adjustment.
 When wiping the product clean, do not splash water on it or use organic solvents like alcoholand benzine. Doing so may discolor or damage the surfaces of the product.
 Even if the product is not used for extended periods, turn the power on at least once every six
months to check pump suction (by running the product for approximately three minutes).
Grease inside the pump motor may solidify and prevent operation if the product is not operated
for extended periods.
 If you do not intend to use the product for extended periods, store with the batteries removed.
Battery leaks may result in fire or injury.
 After a period of extended storage, be sure to perform fresh air adjustment before resuminguse. For information on readjustment including fresh air adjustment, contact RIKEN KEIKI.

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2. Important Safety Information

2-4. Important notes related to explosion resistanceObserve the following points to ensure performance as an explosion-proof product:

Product overview
・ The SP-230 Portable Gas Leak Checker is a gas monitor designed to continuously detect combustible
gases.
・ Gas is drawn in by a built-in pump.
・ Use only alkaline AA batteries (LR6T) manufactured by Toshiba as the power source.
・ Do not replace the dry batteries in hazardous locations.
Explosion-proof construction

Intrinsically safe explosion-proof construction

Explosion-proof class

Ex ia IIC T4 Ga

Ambient temperature-20°C to +55°C

Electrical specifications

Alkaline batteries: Toshiba LR6

Applicable standards

JNIOSH-TR-46-1: 2020
JNIOSH-TR-46-6: 2015

DANGER Be sure to replace the batteries in a safe place.
 Be sure to use only the specified batteries.

WARNING Do not disassemble or modify the product.
 Do not modify or alter the circuitry or configuration.
 This device is an explosion-proof product. Do not disassemble or modify any parts other than thosespecified.
 If the housing becomes damaged, stop using the device, and have it repaired.
 Do not replace the dry batteries in a hazardous area.
 When using the product in hazardous areas, take the following precautions to safeguard against
static electricity hazards:① Wear anti-static clothing and conductive shoes (anti-static work shoes).
② When using the product indoors, stand on a conductive work floor (with a leakage resistance of
10 MΩ or less).

INST. No. 0 0 0 0 0 0 0 0 0 0 0
AB C
DE
A: Year of manufacture (0 to 9)
B: Month of manufacture (1 to 9 for January to September, X for October, Y for
November, Z for December)
C: Manufacturing lot
D: Serial number
E: Factory code
Manufacturer

RIKEN KEIKI Co., Ltd.
2-7-6 Azusawa, Itabashi-ku, Tokyo, 174-8744, Japan
Website: https://www.rikenkeiki.co.jp/

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3. Product Configuration

3

3.

Product Configuration

3-1. Main unit and accessories
Open the box and packaging and inspect the product and accessories.
If anything is missing, contact RIKEN KEIKI.

Main unit
For detailed information on the names and functions of product parts and the LCD display, refer to ‘3-2.
Part names and functions’ (p. 12).

SP-230 main unit

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3. Product Configuration

Accessories

Protective
cover

×1
(fitted)AA
Alkaline
batteries

×2

Taperednozzle×1

Hand strap

×1

Replacement
waterproof
filters

Operating
Manual－×1

Product
warranty

－

×1

1 bag
(set of 5)

Optional accessories
Filter (set of 5)
Tertiary filter
Low-density
polyethylene

Filter to prevent foreign matter
ingress when replacing themiscellaneous gas removal filter

Lever

Gas outlet

Inspection
gas

Inspection gas

Gas leak checkers①
Insertinlet.

②
Press
lever.

Inspection gas

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For checking gas response<Usage instructions>① Turn on the power to the product,
then insert the tip of the inlet into thegas outlet.
② Press the inspection gas lever,then check to confirm the productgas alarm activates. For informationon alarm activation, refer to ‘5-6.
Gas detection’ (p. 20).
③ After inspecting, draw in fresh air,then turn off the product power.
Note:・ Check to confirm that there are no
naked flames or high-temperaturedevices in the vicinity before use.
・ After checking the product alarm
activation, release the inspection
gas lever to stop the gas feed.
・ The gas alarm may remain active
following continuous contact withgas. If this occurs, draw in fresh air
for at least five minutes(recommended), then repeat fresh
air adjustment.

3. Product Configuration
Note:・ Gas leak checkers in the vicinity
may also come into contact withthe gas.
・ Do not perform in a confined
space.

Inspection gas

Tube
EPDM
⌀6 × ⌀3.5 × 500 mm
Attachment used for inserting
annealed copper pipe into water
heaters or other hot equipment.
Annealed copper pipe
External ⌀4 ×
thickness 1 mm ×
length 60 cm

Used for gas adjustment.
Adds moisture to atmospheric air
to adjust accuracy.

Humidifier tube

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3. Product Configuration

3-2. Part names and functions
This section describes the names and functions of the various parts of the main unit and the LCD display.

Main unit

⑦
②

⑧

①

③

④
⑥

⑤
②

⑨
No.
①
②

Name
LCD display
Alarm LED arrays③

LED display④

Buzzer button⑤

PUMP RESET/Lightbutton⑥

POWER/ALARM
POINT button⑦⑧⑨

Gas inlet
Gas outlet
Battery coverFunction
Displays gas concentration, gas name, alarms, and other information.
The LEDs flash or light up when an alarm occurs.
Red LED: Indicates the detection target gas concentration.
Green LED: Indicates the alarm setpoints. Blinks while warming up.
Toggles the operation tone and alarm sound on and off.
Used to select the display mode and setting mode, and also to decrement
input values.
Resets the pump operation when a low flow rate alarm occurs.
Turns the light on and off.
Used to select the display mode and setting mode, and also to increment
input values.
Turns the power on and off.
Edits alarm setpoints.
Used to select the display mode and setting mode, and also to confirm
settings.
Samples gas.
Outlet for discharging gas drawn in (Do not block)Remove when replacing the batteries.

CAUTION

Do not remove the panel sheet on the LCD display. Doing so will impair waterproof and dustproof
performance.
Do not block the gas outlet or subject it to force.

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3. Product Configuration

LCD display

No.
①

Name
Operating status icon

Function
Indicates the operating status in detection mode. (When normal:
Blinks.)②

Flow confirmation icon

Indicates suction status. (When normal: Rotates.)③

Gas concentration display

Displays the gas concentration and units.

④

Operation tone icon

Indicates the operation tone setting.

⑤

Alarm sound icons

Indicates the alarm sound setting.

⑥

Mode display

Indicates the measurement mode status.

⑦

Gas name/message
display

Displays the gas name and function related messages.

⑧

Bar meter display

Displays the gas concentration level in the form of a bar meter.

⑨

Alarm setpoint display

Displays the alarm setpoints.

⑩

Battery level icon

Indicates the approximate battery level.

NOTE Approximate battery levels are indicated as follows:
Sufficient
Low
Replace the batteries.
The battery level icon will blink if the battery level drops even further.
 The operation tone icon indicates whether the operation tone is on or off as follows:
Operation tone on
Operation tone off
 The alarm sound icons indicate whether the alarm sound is on or off as follows:
Alarm sound on
Alarm sound off

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4. Alarm Functions

4

4.

Alarm Functions

4-1. Gas alarm activation
The product’s “gas alarm” is triggered when the detected gas concentration reaches or exceeds the alarm
setpoint. When the gas alarm triggers, the alarm lamp flashes, the buzzer sounds, and indications are
given on the barometer and LED display. (Auto reset operation)
The frequency of the gas alarm lamp flashing and buzzer sounding varies depending on the detectedconcentration. The alarm switches to rapid intermittent operation as the detected concentration increases
and signals/sounds continuously once the upper limit of the detection range is exceeded.

4-2. Fault alarm activation
The “fault alarm” is triggered if an abnormality is detected in the product. When the fault alarm triggers,
the alarm lamp flashes and the buzzer sounds. (Self-latching)
When a fault alarm occurs, the following fault details are displayed on the LCD:
[FAIL SYSTEM]
・ System abnormality:
・ Low battery voltage: [FAIL BATTERY][FAIL CLOCK]・ Adjustment abnormality: [FAIL AIR CAL]
・ Clock abnormality:[FAIL LOW FLOW][FAIL PUMP]・ Low flow rate:
・ Pump abnormality:[FAIL
SENSOR]・ Sensor abnormality:

Alarm lamp
BuzzerRepeated flashing at about
1-second intervals
Repeated intermittent beeps atabout 1-second intervals“Blip-bleep, blip-bleep”
Example display for low flow rate

LCD display

If a fault alarm occurs, determine the cause and take appropriate action.
If the problem lies with the product and the fault occurs repeatedly, contact RIKEN KEIKI immediately.

NOTE





The low flow rate ([FAIL LOW FLOW]), adjustment abnormality ([FAIL AIR CAL]), and clock
abnormality ([FAIL CLOCK]) alarms can be canceled by pressing the PUMP RESET/Light button.
For more information on faults (error messages), refer to ‘10. Troubleshooting’ (p. 46).

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5. Usage Instructions

5

5.

Usage Instructions

5-1. Usage note
The operating precautions apply to both users who have previously used the product and first-time users.
Failure to comply with these precautions may result in failure of the product or inability to detect gas
correctly.

5-2. Preparing startup
WARNING Protective film is attached to the LCD display on the product to protect it against scratching during
shipping.
Be sure to peel off this protective film before using the product. Explosion-proofing performancecannot be met if the protective film is left attached.
Check the following before starting gas detection:
・ Confirm that the protective film attached to the LCD display to protect it against scratching during
shipping has been removed.
・ Confirm that the batteries have been installed and the battery level is sufficient.
・ Confirm that the tapered nozzle and filter are not dirty.
・ Confirm that the tapered nozzle is not bent or split.
・ Confirm that the nipple to which the tapered nozzle is attached is not loose.

5-3. Battery replacement
When using the product for the first time or if the battery level is low, install new AA alkaline batteries asfollows:1

Confirm that the power forthe product is turned off.
If the power is on, turn off thepower.

2

Turn the locking plate
counterclockwise, thenopen the battery cover.

3

Remove the old batteries,
then insert new batteries
noting the polarity.

4

Close the battery cover,then turn the locking
plate clockwise.

Battery
cover

Lockingplate

Dry batteries

Battery polarity markings

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5. Usage Instructions

CAUTION









Be sure to turn off the power for the product before replacing the batteries.
Replace the batteries in a safe place.
When replacing the batteries, replace both batteries with new ones at the same time.
Note the polarity when replacing the batteries. Check the battery polarity marked on the
product body. If the operator presses the POWER/ALARM POINT button after inserting thebatteries with the incorrect polarity, the clock abnormality indication ([FAIL CLOCK]) willappear the next time the power is turned on (assuming the clock function is enabled). Cancel
this by pressing the PUMP RESET/Light button to display the date and time setting screen.
Refer to ‘7-2. Date and time setting’ (p. 35) and set the time and date.
If the batteries are removed for at least five minutes, the clock abnormality ([FAIL CLOCK])
will be displayed the next time the power is turned on (assuming the clock function isenabled). Cancel this by pressing the PUMP RESET/Light button to display the date andtime setting screen. Refer to ‘7-2. Date and time setting’ (p. 35) and set the time and date.
If the battery cover is not fully locked, the dry batteries may fall out, or water may get inthrough the gaps. Water may also get in if minute foreign matter is trapped beneath the
product body and the battery cover.

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5. Usage Instructions

5-4. Startup procedure
When the power is turned on, self diagnosis is performed, and then the product enters detection mode.

NOTE Turning on the power causes the LCD and all of the lamps to operate. (The buzzer also operates if
the operation tone is turned on.) Before operating the product, check that these operations function
correctly.

Turning on the power
To turn on the power, hold down the POWER/ALARM POINT button (for at least one second) until thebuzzer blips.
When the power is turned on, the LCD display changes automatically as shown below before entering
detection mode. (Display examples: Hydrogen model)

1 Hold down POWER/ALARM POINT button for at least one second.
Hold down until the entire LCD display lights up, the alarm lamp lights up, and the buzzer blips.
Entire LCD
display lights up.

Date and time
display*

Gas name/Fullscale display

Display example:
January 01, 2022
01:11

Display example:
H2

Detection mode

Warmup time

Green LEDs flash
in sequence from
top to bottom.
Automatic fresh
air adjustment
display

The buzzer will
beep forapproximately one
second, the alarm
setpoint display andgreen LED will
illuminate, anddetection mode willappear.
* The date and time is displayed only when the clock function is enabled. The clock function is disabled bydefault and date and time is not initially displayed.
For information on enabling the clock function, refer to ‘7-3. Clock function ON/OFF setting’ (p. 36).

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5. Usage Instructions

NOTE







When the clock function is enabled, a clock abnormality ([FAIL CLOCK]) will occur if the batteries
are removed for at least five minutes—for example, during battery replacement—or if the power isturned on after inserting the batteries with the incorrect polarity. Cancel this by pressing the PUMPRESET/Light button to display the date and time setting screen. Refer to ‘7-2. Date and time
setting’ (p. 35) and set the time and date.
The warmup time ([WARM UP]) will vary depending on the sensor stability. Depending on sensor
stability, the green LEDs may not flash in sequence.
If the device has not been used for an extended period, it may take longer than normal to warm up
or a sensor abnormality indication ([FAIL SENSOR]) may appear. If this occurs, restart the
product.
The product automatically performs fresh air adjustment during startup. If the ambient conditions
at startup differ from the conditions for measurement, repeat fresh air adjustment in the conditions
used for measurement. (Refer to ‘5-8. Fresh air adjustment’ (p. 22).)
About the LCD backlight and button backlights
Pressing the Buzzer, PUMP RESET/Light, or POWER/ALARM POINT button turns on the LCD
backlight and button backlights. The LCD backlight and button backlights go out after
approximately 30 seconds if no operation is performed.
The LCD backlight and button backlights also turn on automatically if an alarm is triggered.

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5. Usage Instructions

5-5. Basic operation flow
The product is used in detection mode after turning on the power.
(Display examples: Hydrogen model)

Buzzer

PUMP RESET/LightbuttonHold down for
3 seconds<Operation tone andalarm sound on/off>

Hold down for
3 seconds<Function button><Light on/off>* The function assigned to thefunction button can be used.
(Refer to ‘7-4. Function button
setting’ (p. 37).)

Buzzer+POWER/ALARM
POINT

buttons* Refer to ‘5-8. Fresh air
adjustment’ (p. 22).

buttonHold down for
3 seconds<Change alarm
setpoint><Display mode>* Refer to ‘6. Display
Mode Setting
Procedure’ (p. 27).

POWER/ALARM
POINT

Hold down for 3 seconds<Fresh air adjustment>

button<Power off>

* Refer to ‘5-7. Selecting
alarm setpoints’ (p. 21).

19/49

PUMP
RESET/
Light

POWER/+ ALARM
POINT

buttons<Snap logger>* Refer to ‘5-9. Snap logger’(p. 23).

5. Usage Instructions

5-6. Gas detection
In detection mode, hold the tip of the tapered nozzle close to the location in question to detect the gas.
Gas is drawn in. The detected gas concentration is displayed as a bar meter on the LCD display and LED
display unit.
If no gas is detected, no LEDs other than the alarm setpoint LEDs (green LEDs) will light up on the LED
display unit bar meter.
If the gas concentration exceeds the alarm setpoint, the LED lights up red (green if below the alarm
setpoint). The LEDs light up in sequence from bottom to top as the gas concentration increases.

DANGER If measuring inside manholes or enclosed spaces, never lean over or look into the manhole or
enclosed space. There is a danger that oxygen-deficient air or other gases may be discharged
from such locations.
 Oxygen-deficient air or other gas may be discharged from the product gas outlet. Never breathein this air.
 High-concentration (100 %LEL or higher) combustible gas may be discharged from the productgas outlet. Be sure to maintain a safe distance from flame sources.

WARNING









The product is designed to draw in gas at atmospheric pressure. There is a danger that
detection target gas may leak from inside the product if an excessive pressure is applied tothe product gas inlet or outlet. Be careful to avoid excessive pressure during use.
When fresh air adjustment is performed in the atmosphere, check the atmosphere forfreshness before starting. The presence of miscellaneous gases will make it impossible toadjust the product correctly, resulting in the danger of erroneous detection when actual gas
leaks occur.
A gas alarm indicates an extreme hazard. The user must take appropriate action based on thesituation.
Check the battery level before using the product. The batteries may become depleted if notused for an extended period. Always replace with new batteries before use.
Gas cannot be detected if a low battery alarm occurs. If the alarm is issued during use, turn off
the power and promptly replace the batteries in a safe place.
The reading may freeze at a high value if the product is dropped or subjected to impact. If thisoccurs, perform fresh air adjustment in a location where there is fresh air.
If the concentration of the gas drawn in is below the alarm setpoint, nothing will appear on the
LCD display or LED display unit bar meter. Make sure the alarm setpoints are set
appropriately before use.
(Example: Nothing will appear on the LCD display or LED display unit bar meter if the gas
drawn in is detected at 10 or more or less than 30 with the alarm setpoint set to 30.)

CAUTION

When detecting gas, attach the tapered nozzle provided to avoid the effects of airborne dust.

20/49

5. Usage Instructions

5-7. Selecting alarm setpoints
As shipped, the product is set to detect R600a (Type F) or H2 (Type H2), with the alarm setpoint set to 30.
The alarm setpoint can be selected to one of five levels to suit the environment in which the gas to be
detected is present.

Alarm setpoint selection procedure(Display examples: Hydrogen model)

1 Press the POWER/ALARM POINT button in detection mode.
Pressing the POWER/ALARM POINT button cycles through the five alarm setpoints.

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5. Usage Instructions

5-8. Fresh air adjustment
Perform fresh air adjustment under ambient measurement conditions after detecting a high-concentration
gas or following an alarm triggered by changes in temperature or humidity.
* Confirm that the surrounding air is fresh when performing fresh air adjustment.
(Display examples: Hydrogen model)

1

Hold down the Buzzer
button and
POWER/ALARM POINT
button at the same timein detection mode.

2

When the display
changes from [HOLDKEY] to [RELEASE],
release the
POWER/ALARM POINT
button.
(The buzzer blips three times.)▼▼
Fresh air adjustment is performed
and the product returns todetection mode.
(The buzzer blips once.)If fresh air adjustment is
unsuccessful, [FAIL AIR CAL]
is displayed.
Repeat fresh air adjustment infresh air.

NOTE

 Always perform fresh air adjustment under conditions of pressure, temperature, and humidity similar
to those in the operating environment and in fresh air.
 Wait for the reading to stabilize before performing fresh air adjustment.
 If the temperature or humidity changes rapidly between the storage and usage locations, turn on the
power and allow the product to stand and acclimatize for about 10 minutes in an environment
similar to the usage location before performing fresh air adjustment.

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5. Usage Instructions

5-9. Snap logger
Peak values can be recorded during measurement.
Up to 256 data items can be recorded, and when the maximum number of items is reached, the oldest
data is overwritten by new data.
This function is enabled when the clock function is enabled. By default, the clock function is disabled. Turnon the clock function before using the snap logger function. (Refer to ‘7-3. Clock function ON/OFF setting’(p. 36).)
If assigned to the function button, it can also be accessed by holding down the Buzzer button (for at least
three seconds) while in detection mode.

1

Press the PUMP RESET/Light button and
POWER/ALARM POINT
button at the same timein detection mode.
The station ID selection screen isdisplayed.

2

Use the Buzzer button or
PUMP RESET/Lightbutton to select thestation ID, then press
the POWER/ALARM
POINT button.

To cancel recording, press the
Buzzer button and PUMPRESET/Light button at thesame time. The product returns
to detection mode.

The peak value is displayed.

3

Press the POWER/ALARM
POINT button.

To continue and record
another log, repeat steps 2 to
3.
To quit log recording, press the
Buzzer button and PUMPRESET/Light button at thesame time.

The date/time and peak value arerecorded.

The product returns todetection mode.

NOTE The following operations are available while the peak value is displayed in step 2:
Buzzer button: Operation tone and alarm sound on/off
PUMP RESET/Light button: Light on/off

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5. Usage Instructions

5-10. Peak hold function
If the peak hold function is enabled, the most recent peak value will be constantly displayed on the bar
meter display.
(Display examples: Hydrogen model)

1

Hold down the PUMPRESET/Light button(for at least threeseconds) in detectionmode.
The display changes
to the display mode
peak value display.

2

Hold down the Buzzer
button (for one
second) with the peakvalue display screen
displayed.
The peak hold function isenabled.
[P] is displayed in the mode
display while the peak holdfunction is enabled.
To disable the peak holdfunction, hold down the
Buzzer button (for one
second) once again.

NOTE

 To clear the retained peak value, hold down the Buzzer button (for at least three seconds) with thedisplay modepeak value display screen displayed.
 The peak hold function will be reset and disabled if the power is turned off and back on again.

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5. Usage Instructions

5-11. Toggling the operation tone and alarm sound on
and off
The operation tone and alarm sound can be toggled on and off.
(Display examples: Hydrogen model)

1

Press the Buzzer button in detection mode.
Pressing the Buzzer button cycles through the operation tone and alarm sound settings.

Operation tone on
Alarm sound on

Operation tone on
Alarm sound off

Operation tone off
Alarm sound off

25/49

Operation tone off
Alarm sound on

5. Usage Instructions

5-12. Turning on the light
The light can be turned on when using the product in dark locations.

1

Press the PUMP RESET/Light button.
The light turns on. The light will go out automatically approximately two minutes after it is turnedon.
To turn off the light, press the PUMP RESET/Light button again.

CAUTION The light automatically turns off when a low battery voltage alarm occurs.

5-13. Turning off the power
To turn off the power, hold down the POWER/ALARM POINT button (for at least three seconds) until thebuzzer blips three times and [TURN OFF] disappears.



CAUTION
Purge mode is automatically enabled (for up to 30 seconds) before the power turns off if any
gas remains inside the device. A countdown appears after automatic purging starts ([PURGE30]). This changes to [TURN OFF] once gas purging is complete, after which the power isturned off.

Automatic purging start ([PURGE 30])

26/49

6. Display Mode Setting Procedure

66.

Display Mode Setting Procedure

6-1. Selecting display mode
Display mode lets users review and change various display settings and perform other operations.
(Display examples: Hydrogen model)

1

Hold down the PUMP RESET/Lightbutton (for at least three seconds)
in detection mode.
The display changes to the display mode peakvalue display.

2

Press the PUMP RESET/Lightbutton repeatedly to display therequired menu.
The display mode setting screen changes eachtime the button is pressed.
The setting screen changes even if the button
is held down, and the setting screen stops
changing on returning to detection mode.

3

Select the desired setting item,
then press the POWER/ALARM
POINT button.
For information on setting items, refer to‘Display mode overview’ (p. 28).

NOTE

 If no button is pressed for approximately 20 seconds, the product will automatically return todetection mode.
 In display mode, gas detection continues, and alarms may be triggered.

27/49

6. Display Mode Setting Procedure

Display mode overview
Item

LCD display

Details

Peak display

Displays the maximum concentration
detected since the power was turned on.
* To clear the peak value, hold down the
Buzzer button (for at least threeseconds) until [PEAK CLR] isdisplayed.

Target gas selection
setting

Displays the gas concentration converted
from the detection target gas bychanging the setting to a gas registered
beforehand in the product.
(Refer to ‘6-2. Target gas selection
setting’ (p. 29).)

Log data display

Displays the data recorded by the snap
logger. (Refer to ‘6-3. Log data display’(p. 32).)* Displayed only when the clock function
is enabled.
(Refer to ‘7-3. Clock function ON/OFF
setting’ (p. 36).)

Selects user mode.
(Refer to ‘7-1. Selecting user mode’ (p.
33).)

User mode selection

28/49

6. Display Mode Setting Procedure

6-2. Target gas selection setting
The default setting for the product is normally [R600a] for Type F and [H2] for Type H2, but gas
concentration can be detected simply by switching to another pre-registered gas.
If assigned to the function button, it can also be set by holding down the Buzzer button (for at least threeseconds) while in detection mode.
(Display examples: Hydrogen model)

1

Press thePOWER/ALARM POINT
button on the display
mode GAS LIST screen.
The gas conversion setting isdisplayed.

▼
Displays the name of the gas
currently set.

2

Press the Buzzer button
or PUMP RESET/Lightbutton to select theconversion gas name.
Pressing the button cycles
through the list of gases.

3

Press thePOWER/ALARM POINT
button once the desiredgas name appears.
[END] is displayed, and the
product returns to display mode.

NOTE Before setting the concentration conversion, refer to the gas lists on the following pages.

29/49

6. Display Mode Setting Procedure

Gas list for freon gas (Type F)

Display

Scale
1
(ppm)

Scale
2
(ppm)

Scale
3
(ppm)

Scale
4
(ppm)

Scale
5
(ppm)

Unit
conversion(guide)(g/year)

R600a (Isobutane)

R600A

10

30

150

500

2000

Approx. 2.7

R290 (Propane)

R290

10

50

200

500

2000

Approx. 2.1

Freon 123

R123

20

100

500

2000

5000

Approx. 14.4

Freon 134a

R134A

20

100

500

2000

5000

Approx. 9.58

Freon 142b

R142B

10

50

100

200

500

Approx. 4.7

Freon 22

R22

10

50

200

1000

3000

Approx. 4.1

Freon 32

R32

10

50

200

500

2000

Approx. 2.4

Freon 23

R23

10

50

200

500

2000

Approx. 3.3

Freon 407C

R407C

10

50

200

500

2000

Approx. 4.0

Freon 410A

R410A

10

50

200

500

2000

Approx. 3.4

Freon 404A

R404A

10

50

200

500

2000

Approx. 4.6

2,3,3,3Tetrafluoropropene(HFO-1234yf)

R1234YF

10

50

200

500

1000

Approx. 5.3

Freon 507A

R507A

10

50

200

500

1000

Approx. 4.6

Freon 407A

R407A

10

50

200

500

2000

Approx. 4.2

Gas name(standard name)

Alarm setpoints can be altered on a five-point scale from 1 to 5 for each gas type.

NOTE

 The unit conversion value (g/year) represents the approximate value at “scale 1” concentration
when assuming a pump flow rate of approximately 200 mL/min (constant).
Note that the unit conversion value will vary depending on differences in flow rate due to individual
pump differences and deterioration over time.
 Prolonged or high-concentration exposure to chlorine and sulfur compounds will reduce sensor life
and increase measurement errors.
 Detecting silicon compounds will decrease sensitivity and reduce sensor life.
 Drawing in high concentrations of solvent gases will degrade seals and other components insidethe detector.

30/49

6. Display Mode Setting Procedure

Gas list for hydrogen gas (Type H2)

Gas name (standard name)

Display

Scale 1

Scale 2

Scale 3

Scale 4

Scale 5

(ppm)

(ppm)

(ppm)

(ppm)

(ppm)

Methane (calibration gas)

CH4

10

30

150

500

2000

Hydrogen (calibration gas)

H2

10

30

150

500

2000

Acetylene

C2H2

10

30

150

500

2000

Ethylene

C2H4

10

30

150

500

2000

Ethane

C2H6

10

30

150

500

2000

Propylene

C3H6

10

30

150

500

2000

Propane

C3H8

10

30

150

500

2000

Butadiene

C4H6

10

30

150

500

2000

Isobutylene

C4H8

10

30

150

500

2000

Normal butane

N-C4H10

10

30

150

500

2000

Isobutane

I-C4H10

10

30

150

500

2000

Cyclopentane

C5H10

10

30

150

500

2000

N-hexane

N-C6H14

10

30

150

500

2000

Freon 22

R22

10

50

200

1000

3000

Freon 134a

R134A

20

100

500

2000

5000

HFO-1234yf

R1234YF

10

50

200

500

1000

NOTE

 As shipped, the product is adjusted for methane and hydrogen.
 Response may be slower with certain conversion gases.
 This product is intended for the detection of minute gas leaks, so gas concentration readings areapproximate.

31/49

6. Display Mode Setting Procedure

6-3. Log data display
Data recorded by the snap logger can be viewed.
The REC DATA screen is displayed only when the clock function is enabled. (Refer to ‘7-3. Clock function
ON/OFF setting’ (p. 36).)(Display examples: Hydrogen model)

1

Display mode
Press thePOWER/ALARM POINT
button on the REC
DATA screen.
The log data display appears.
The display cycles throughrecorded date, station ID, andmemory number. If no data has
been recorded, [NO DATA]
appears.

2* If no recorded data exists

Press the Buzzer
button or PUMPRESET/Light button to
select the log data to
be displayed.
Pressing the button cycles
through the records.

<Station ID>

3

Press thePOWER/ALARM POINT
button once thedesired log data
appears.
The selected memory gas
name and peak are displayedalternately.

4

To exit, press the
Buzzer button and
PUMP RESET/Lightbutton at the sametime.
The product returns to display
mode.

32/49

<Memory number>

7. User Mode Setting Procedure

7

7.

User Mode Setting Procedure

7-1. Selecting user modeThis can be used for maintenance such as adjusting the internal clock.
(Display examples: Hydrogen model)

1

Press the button several times indisplay mode to display [USER],
then press the POWER/ALARM
POINT button.
Selects the user mode clock function ON/OFF
setting.
* Selects the date and time setting if the clockfunction is enabled.

2

Press the Buzzer button or PUMPRESET/Light button repeatedly todisplay the required menu.
The user mode setting screen changes eachtime the button is pressed.

3

Select the desired setting item,
then press the POWER/ALARM
POINT button.
For information on setting items, refer to ‘User
mode overview’ (p. 34).

CAUTION Be sure to return to detection mode after user settings are complete. The product will not
return automatically to detection mode if left in user mode.

33/49

7. User Mode Setting Procedure

User mode overview
Item

LCD display

Details

Date and time settingThis sets the date and time for theinternal clock.
(Refer to ‘7-2. Date and time setting’(p. 35).)* Displayed only when the clock function
is enabled.

Clock function ON/OFF
setting

Sets the clock function on and off.
(Refer to ‘7-3. Clock function ON/OFF
setting’ (p. 36).)

Function button setting

Sets the function assigned to the function
button.
(Function button: Hold down the Buzzer
button for at least three seconds while indetection mode.)

ROM/SUM display

Displays the product program number,
SUM value, and version.
* This is not normally used by the user.

Detection mode selection

To exit, press the POWER/ALARM POINT
button and return to detection mode.

34/49

7. User Mode Setting Procedure

7-2. Date and time settingThis sets the date and time for the internal clock.
The date and time setting screen is displayed only when the clock function is enabled. Turn on the clockfunction as described in ‘7-3. Clock function ON/OFF setting’ (p. 36) before setting the date and time.

1

Press the POWER/ALARM POINT
button on the user mode DATE
screen.
The date and time setting screen is displayed.

2

Press the Buzzer button or PUMPRESET/Light button to set the timeand date, then press the
POWER/ALARM POINT button.

3

Set the date and time in thesequence year → month → day →hours → minutes.
[END] appears once the minutes havebeen set. The display then returns to theuser mode menu.

35/49

7. User Mode Setting Procedure

7-3. Clock function ON/OFF setting
Sets the clock function on and off.
By default, the clock function is disabled. Turn on the clock function in order to display the date and time atstartup or to use the snap logger function.

1

Press the POWER/ALARM POINT
button on the user mode CLOCK
screen.
The clock function ON/OFF setting screen isdisplayed.

2

Press the Buzzer button or PUMPRESET/Light button to turn theclock function on or off, then press
the POWER/ALARM POINT button.

3

Exiting setting[END] appears once the clock function has
been set on or off. The display then returns tothe user mode menu.

NOTE If the date or time is invalid when the clock function is enabled, a clock abnormality ([FAIL CLOCK])
will be displayed.
 Press the PUMP RESET/Light button to reset the abnormality. The date and time setting screen
appears. Set the date and time as described in ‘7-2. Date and time setting’ (p. 35).
 A clock abnormality ([FAIL CLOCK]) will be displayed after turning on the power when the clockfunction is first turned on or if the batteries are removed for at least five minutes—for example, during
battery replacement—or after inserting the batteries with the incorrect polarity.

36/49

7. User Mode Setting Procedure

7-4. Function button setting
The function button can be set.
A function can be assigned and called up by holding down the Buzzer button (for at least three seconds)
while in detection mode.
By default, the target gas selection setting is assigned.

1

Press the POWER/ALARM POINT
button on the user mode KEY SET
screen.
The function button setting screen is displayed.

2

Press the Buzzer button or PUMPRESET/Light button to select thefunction to be assigned to thefunction button, then press the
POWER/ALARM POINT button.

3

Exiting setting[END] appears once the function button has
been set. The display then returns to the user
mode menu.

37/49

7. User Mode Setting Procedure
List of functions that can be assigned to the function button
Functions

LCD display

Details
Assigns the target gas selection setting to
the function button.
(Refer to ‘6-2. Target gas selection setting’(p. 29).)Target gas selection
setting

Destination when using function button
Detection mode → Display mode → [GASLIST] → Current setting

Assigns the snap logger to the function
button.
(Refer to ‘5-9. Snap logger’ (p. 23).)

Snap logger

Destination when using function button
Detection mode → Station ID selection
screenNOTE If the snap logger is assigned to the function button, it cannot be used when the clock function isdisabled. Turn on the clock function. (Refer to ‘7-3. Clock function ON/OFF setting’ (p. 36).)

38/49

8. Maintenance

88.

Maintenance

The product is a precision device.
Maintain and inspect the product at regular intervals to ensure product performance and improve gas leakdetection reliability.

8-1. Maintenance intervals and maintenance items
Maintain the following items at regular intervals before use:
・ Daily maintenance (Pre-work checks): Perform maintenance before commencing work.
・ Regular maintenance: Perform maintenance at least once a year to ensure product performance.

Inspection item

Inspection details

Daily
maintenance(Pre-work
checks)Battery level
check

Check to confirm battery levels are sufficient.

〇

〇

〇

〇

〇

〇

〇

〇

―

〇

Concentration
display check
Flow rate
check
Filter checkGas
adjustment

Check to confirm that the concentration readingis zero after drawing in fresh air. If the reading isoffset, perform fresh air adjustment after
confirming that no miscellaneous gas is present
in the vicinity.
Check the flow confirmation icon to confirm that
there is no abnormality.
Check to confirm that the dust filter andmiscellaneous gas removal filter are not dirty or
clogged.
Perform gas adjustment using a calibration gas.

39/49

Regularmaintenance8. Maintenance

Maintenance service
RIKEN KEIKI provides services related to regular maintenance, including span adjustment, as well asother adjustments and maintenance.
Preparing a calibration gas requires dedicated equipment, including gas cylinders of the specified
concentration and gas sampling bags.
Our certified service engineers have expert knowledge of the dedicated tools used for these services,along with expertise in products. We recommend taking advantage of our maintenance service to ensure
safe use of the product.
The major maintenance service items are as follows. For more information, contact RIKEN KEIKI.
<Main service details>
Item
Description
Battery level check Checks battery levels.
Checks to confirm that the concentration reading is zero using zero gas.
Concentration
Fresh air adjustment is performed if the reading is not zero.
display check
Checks to confirm that the dust filter and miscellaneous gas removal filter are
not dirty or clogged.
Filter check
Replacement if dirty or clogged
Adjusts sensitivity using a calibration gas.
Span adjustment
Product cleaning
Checks the product exterior for dirt and cleaning/repairing of visible areas.
and repair
Replacing parts if cracked or damaged(visual inspection)
Product operation Checks operation of individual functions using buttons and checking
parameters.
check
Carries out replacement of the sensors, filters, pump, and other consumable
Consumable part
parts.
replacement

40/49

8. Maintenance8-2. Cleaning instructions
Clean the product if it becomes excessively dirty. Be sure to turn off the power before cleaning, and wipe
clean using a cloth. Do not clean using water or organic solvents for cleaning, as these may cause theproduct to malfunction.
Use dry air to clean inside the tapered nozzle. Gas detection may be affected if the interior of the tapered
nozzle becomes dirty.

CAUTION

Do not use water or organic solvents such as alcohol or benzine when wiping the product.
These may discolor or damage the surface of the product, or cause the sensor to malfunction.

NOTE

Water may remain in the grooves after the product has got wet. Remove any moisture as follows:① Wipe away moisture on the product thoroughly using a dry towel or cloth.
② Hold the product firmly and shake it about 10 times facing downward.
③ Wipe away moisture escaping from the inside thoroughly using a towel or cloth.
④ Place the product on a dry towel or cloth and allow it to stand at room temperature.

8-3. Parts replacement
Teflon filter replacement procedure
The Teflon filter may become dirty and clogged with continued use.
Replace the filter if it appears especially dirty.
Also replace the filter if water has been sucked in or the flow rate drops.

1

Turn the cap counterclockwise andremove.

2

Remove the seal from the cap.

Cap

Seal

41/49

8. Maintenance3

Replace the Teflon filter contained
inside the seal with a new filter.
Filter

Seal

4

Reattach the seal with the Teflon
filter inside to the cap.
Check to confirm that the rib securely engages withthe groove here.
Rib
Groove5

Reattach the cap with seal fitted tothe main unit.

42/49

8. Maintenance

Miscellaneous gas removal filter (CF-8392) replacement
procedure (Type H2)
A miscellaneous gas removal filter (CF-8392) is fitted inside the product to remove silicone, sulfides, andother miscellaneous gases that may damage the sensor.
With prolonged use, it may become dirty and clogged, reducing the miscellaneous gas removal
performance. Replace the filter after inadvertently aspirating water or oil, if clogging generates a low flowrate alarm, if sensor sensitivity is noticeably reduced, if the product has been used in environments inwhich Si-based or other miscellaneous gases are present, or if the filter is discolored.
The recommended replacement interval for the miscellaneous gas removal filter (CF-8392) is one year.
Mount by sliding the flat sides on either side of the filter into the guide.

Sensor replacement
The built-in sensors have finite service lives (warranty period one year), and must be replaced regularly.
If the sensors cannot be adjusted using span adjustment, the readings are not restored after fresh air
adjustment, or the readings fluctuate, the sensors are at the end of their life.
Contact RIKEN KEIKI for replacement.

Battery replacement
For information on how to replace the batteries, refer to ‘5-3. Battery replacement’ (p. 15).

43/49

9. Storage and Disposal

99.

Storage and Disposal

9-1. Procedures for storage or when not in use forextended periods
The product must be stored in the following environment:
・ At normal temperature and humidity in a location not exposed to direct sunlight・ In a location free of gases, solvents, and vapors
Store the product in its shipping carton if this has been retained.
If the shipping carton is not available, store away from dust and dirt.



CAUTION
If the product is not to be used for extended periods, store with the dry batteries removed.
Battery leakage may result in fire or injury.
Even if you do not intend to use the product for extended periods, turn the power on at least
once every six months to check pump suction (by running the product for approximately threeminutes). Grease inside the pump motor may solidify and prevent operation if the product is
not operated for extended periods.

9-2. Procedures for use after storage

CAUTIONBe sure to perform gas adjustment if the product is used again after a period in storage.
Contact RIKEN KEIKI to request readjustment and gas adjustment.

44/49

9. Storage and Disposal

9-3. Product disposal
Dispose of the product as industrial waste (incombustible) in accordance with local regulations.

WARNING

Dispose of the batteries in accordance with procedures specified by the local authority.

<Disposal in EU member states>
When disposing of the product in an EU member state, dispose of the batteries separately. The batteries
must be removed and disposed of appropriately in accordance with waste sorting and collection or
recycling systems stipulated by the regulations of EU member states.
Battery removal
For information on how to remove the batteries, refer to ‘5-3. Battery replacement’ (p. 15).

NOTE
Crossed-out recycle dustbin markThis pictogram is affixed to products which contain batteries that fall under EU
Battery Directive 2006/66/EC. Such batteries need to be disposed of as specified
by the latest directive. This pictogram means batteries must be separated fromordinary waste and disposed of appropriately.

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10. Troubleshooting

10

10.

TroubleshootingThis troubleshooting section does not address causes of all problems that may occur with the product. It
provides brief explanations to assist in determining the causes of common problems.
If you encounter symptoms not addressed here or if problems persist even after taking corrective action,
contact RIKEN KEIKI.

<Product abnormalities>
Symptom

Cause

ActionThe batteries are depleted.

Replace with two new batteries in a safe
place.

The POWER/ALARM
POINT button was pressed
for too short a time.

When turning on the power, hold down the
POWER/ALARM POWER switch until you
hear a short blip.

The dry batteries have notbeen correctly inserted.

Check to confirm that the batteries arecorrectly inserted in the main unit.

Abnormal operation

Effects of sudden static
electricity noise, etc.

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

The product does notoperate.

Effects of sudden static
electricity noise, etc.

Remove the batteries in a safe place,reinsert the batteries, then turn on the
power again to operate.

System abnormality[FAIL SYSTEM]

A circuit abnormality
occurred in the main unit.

Contact RIKEN KEIKI for repairs.

Sensor abnormality[FAIL SENSOR]

The sensor is defective.

Remove the batteries in the presence offresh air, reinsert the batteries, then turnon the power again. If the error persists
even after turning the power back on again
several times, contact RIKEN KEIKI torequest sensor replacement.

Low battery voltage
alarm indication[FAIL BATTERY]

The battery level is low.

Turn off the power and replace with newbatteries in a safe place.

Water or oil has been
sucked into the product.

Before using the PUMP RESET/Lightbutton to reset the pump, check thetapered nozzle to confirm that there are nosigns of damage or water or oil being
sucked in.

The tapered nozzle isclogged.

Before using the PUMP RESET/Lightbutton to reset the pump, check thetapered nozzle to confirm that it is properly
connected and not clogged or twisted.

The power cannot be
turned on.

Low flow rate alarmindication[FAIL LOW FLOW]

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10. Troubleshooting
Symptom

Cause

ActionThe power was turned on
at a cold temperature orafter an extended period.

Turn the power off and on several times.
The pump may start working. If the
problem persists, contact RIKEN KEIKI torequest pump replacement.

The pump is deteriorated.

Contact RIKEN KEIKI to request pump
replacement.

Fresh air is not being
supplied around the
product.

Provide fresh air, and perform fresh air
adjustment in the measurement
environment.

Clock abnormality[FAIL CLOCK]Internal clock abnormality

Set the date and time.
If this symptom occurs frequently, theinternal clock may be faulty and must be
replaced. Contact RIKEN KEIKI for
repairs.

Pump abnormality[FAIL PUMP]

Pump abnormality

Contact RIKEN KEIKI for repair.

Fresh air adjustment is
not possible.
[FAIL AIR CAL]

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11. Product Specifications

11

11.

Product Specifications

Model
Detection principle
Detection target
gas
Calibration gas
Concentration
display
Detection range
Detection method
Alarm setpoints
Display items
Response time(for identical conditions)

Gas alarm typeGas alarm
indication
Gas alarm patternFault alarm
Fault alarm icon
Fault alarm pattern
Power source
Continuous
operating time
Operatingtemperature range
Operating humidity
range
Explosion-proof
construction
Explosion-proof
class
Certifications
Protection level
External
dimensions
WeightSP-230 (Type F)
For freon detection

SP-230 (Type H2)
For hydrogen detection

Hot-wire semiconductor type
Refer to ‘Gas list for freon gas’ (p. 30)
R600a (Isobutane)

Refer to ‘Gas list for hydrogen gas’(p. 31)
H2, CH4

LCD bar meter + scale + LED
Depends on target gas
Depends on target gas(R600a: 10 – 2,000 ppm)
(H2/CH4: 10 – 2,000 ppm)
Pump suction type
Default setting: 30 ppm
Default setting: 30 ppm(R600a: 10, 30, 150, 500, 2,000 ppm)
(H2/CH4: 10, 30, 150, 500, 2,000 ppm)
Operating status icon, flow confirmation icon, operation tone icon, alarm soundicons, alarm setpoint display, battery level icon, bar meter display, mode display,gas name/message display
Within 3 seconds
One-step alarm
Lamp flashing, buzzer sounding
Auto reset
Sensor abnormality/Low flow rate/Low battery voltage/Systemabnormality/Adjustment abnormality/Clock abnormality/Pump abnormality
Lamp flashing/buzzer sounding/fault information display
Self-latching
AA alkaline batteries × 2
Approx. 13 hours (with alkaline dry batteries, at 25 °C, no alarm, no lighting)-20 °C to +55 °C (no sudden fluctuations)
Up to 95 %RH (no condensation)
Intrinsically safe explosion-proof construction
Ex ia IIC T4 Ga (Japan Ex)
CE marking, UKCA marking
IP67 equivalent
Approx. 41 mm (W) × 186 mm (H) ×38 mm (D) (excluding projections)
Approx. 220 g (excluding dry batteries)* This product is intended for the detection of minute gas leaks, so gas concentration values areapproximate.

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12. Appendix

12

12.

Appendix12-1. Terminology
vol%Indicates gas concentrations in units of parts per hundred by volume.

ppm

Indicates gas concentration in units of parts per million by volume.

LEL

Abbreviation for “lower explosive limit”.
The lower explosive limit is the minimum concentration of a combustible gas
mixed in air at which ignition will result in explosion.

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Revision history
Issue

Revision details

Issue date

0First issue (PT0-2240)

April 19, 2024

1

CE Declaration of conformity

June 12, 2024