PT0E-12712

Personal Combustible Gas Monitor

GP-03
Operating Manual<Contents>
1 Outline of the Product .............................. 3
1-1. Preface ............................................. 3
1-2. Purpose of use ................................. 3
1-3. Definition of DANGER, WARNING,
CAUTION, and NOTE ...................... 4
1-4. Checking standards andexplosion-proof specifications .......... 42 Important Notices on Safety ..................... 52-1. Danger cases ................................... 52-2. Warning cases .................................. 52-3. Precautions ...................................... 6
3 Product Components ............................... 83-1. Checking the package ...................... 83-2. Names and functions for each part ... 94 How to Use ............................................ 114-1. Preparation for start-up .................. 114-2. Power-on and power-off ................. 124-3. Performing air calibration ................ 134-4. How to detect.................................. 144-5. Seeing information .......................... 155 Operations and Functions ...................... 175-1. Gas alarm activation ....................... 175-2. Fault alarm activation ..................... 195-3. Data logger function ....................... 196 Maintenance ........................................... 206-1. Maintenance intervals and items .... 206-2. User mode ...................................... 226-3. How to clean ................................... 276-4. List of recommended regularreplacement parts ........................... 276-5. Filter replacement ........................... 28
7 Storage and Disposal ............................. 2917-1. Procedures to store the gas monitor orleave it for a long time .................... 29
7-2. Procedures to use the gas monitor
again .............................................. 297-3. Disposal of products ....................... 30
8 Troubleshooting ..................................... 32
9 Product Specifications............................ 3321

Outline of the Product1-1. Preface
Thank you for choosing our personal
combustible gas monitor GP-03 (hereinafterreferred to as the gas monitor). Please checkthat the model number of the product you
purchased is included in the specifications on
this manual.

1-2. Purpose of use
This product is a single gas monitor used todetect combustible gases (%LEL) in the air.
Detection results are not intended toguarantee life or safety in any way.

This manual explains how to use the gasmonitor and its specifications. It contains
information required for using the gas
monitor properly. Not only the first-time users
but also the users who have already used theproduct must read and understand theoperating manual to enhance the knowledge
and experience before using the monitor.

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Product Components
3-1. Checking the package
After unpacking, be sure to check that all theaccessories are included in the package.
 GP-03 (the main unit) Rubber protection cover (pre-attached to themain unit) Alligator clip (pre-attached to the main unit) Batteries (pre-installed in the main unit) Operating manual (this document)84-5. Seeing information
Press the MODE button to enter the displaymode. Every time the MODE button ispressed, various pieces of information aredisplayed in turn. The gas detection isrunning in the background in this mode. If theconcentration of detected gas exceeds thealarm setpoint value, the gas monitor
automatically returns to the detection mode.
Item
Detection
ModeLCD

MODE
Displays thefull scale ofthis monitor.

MODE
Date andtime
Displays theinternal clockDetails

MODEReturns tothe detection
mode.

MODEPEAK
Displaysmaximum
value
detected frompower-on tothe present.

* When the monitor
displays the full scale,
1st and 2nd alarm
setpoint values are
displayed alternately
every time the AIR
button is pressed.

F.S.

* To clear the peakvalue, press and holdthe AIR button until theHOLD display
disappears.

15

NOTE

 If no switch operations are performed, the monitor
automatically returns to the detection mode in about
20 seconds.
 If no switch operations are performed, the backlight isautomatically turned off in about 30 seconds (except atan alarm state).
 When the gas monitor displays the full scale, hold AIR+ MODE buttons down to perform the alarm test.

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5Operations and Functions
5-1. Gas alarm activation
An alarm is triggered when the concentrationof the detected gas reaches or exceeds thealarm setpoint value <Self-latching
operations>.
<Alarm activation>
Alarm type
LCD
Operation
Buzzer: SlowFirst alarm
Setting: 10%LEL

Second alarm
Setting: 50%LEL

Buzzer: Fast
intensitychangeLamp/Vibration:
Fast andintermittent
Display:
Concentration
display
blinking
Displays
ALRMintensitychangeLamp/Vibration:
Slow andintermittent
Display:

Over alarm
Setting: 100%LEL

Concentration
display
blinking
Displays
WARN

Buzzer: Fast
intensitychangeLamp/Vibration:
Fast andintermittent
Display:
Concentration
display
blinking
Displays
OVER

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<How to reset the alarm>
After the concentration of detected gas
settles below the alarm setpoint value, press
any button to reset the gas alarm.
NOTE Even if the concentration of detected gas returns tobelow the alarm setpoint value, the operations ofbuzzer, lamp and vibration continue (self-latching)until any button is pressed (the alarm is reset).
 The alarming type of OVER alarm is self-latching(even the OVER display is latched). Press any button
to reset the alarm. If the gas concentration is lower
than the full scale at the reset, the gas concentration
display appears again. If it is over the full scale, anOVER alarm occurs again.

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5-2. Fault alarm activation
A fault alarm is triggered when the monitor
detects abnormalities <Self-latching
operations>.
Determine the causes and take appropriate
actions.
If the gas monitor has problems and isrepeatedly malfunctioning, contact RIKEN
KEIKI immediately.
<Alarm activation>
Alarm type
LCD display
Operation(example)
Buzzer: Intermittent
Low battery
Lamp: Blinking
voltage alarm
Vibration: None

5-3. Data logger function
The gas monitor has a function that records
logs of calibration history, trend and event
history.
Data logger
Interval trend
1800 data
specifications (5 hours at 10 second intervals, 150 hours
at 5 minute intervals)
Alarm trend 1 record (15 minutes before
and after at 5 second intervals)
Alarm event
20 records
Fault event
20 records
Calibration history
20 records

The data logger management program(option) is required to use this function.
Contact RIKEN KEIKI if it is needed.
* For details on the operation, see Operating Manual"Data Logger Management Program".

Display:
Concentration
display
blinking
Displays anerror message* For details on the fault alarm type, primary causes, andappropriate actions, see "8. Troubleshooting".

196Maintenance Regular maintenance:
Perform maintenance once or more every
six months to maintain the performance asa safety unit.

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.
Contact RIKEN KEIKI if it is needed.

Maintenanceitem

6-1. Maintenance intervals and items
Regular maintenance must be performed atshorter intervals specified either in laws
according to your usage environment or by
RIKEN KEIKI.

Maintenancecontent

Battery level Check that thebattery level issufficient
ConcentraCheck that thetion display air is fresh andthe concentration
display value iszero
FilterCheck that thedust filter is freeof dust and not
damaged Daily maintenance: Perform maintenancebefore beginning to work.
 Monthly maintenance:
Perform alarm test once a month.
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Dailymaintenance

MonthlymaintenanceRegularmaintenance

○

○

○

○

○

○

○

○

○

Alarm testSpanadjustment
Gas alarm

Check that thealarm lamp andbuzzer operate
normally byusing the alarm
test function
Perform the span
adjustment byusing thecalibration gas
Check that thegas alarm iscorrectly
triggered using
the calibrationgas-○○--○--○

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6-2-1. Time settings
Set the date/time of the internal clock.
Item
LCDDetails
DATE

6-2-2. Air calibration
Perform air calibration in fresh air.
Item
LCDDetails
AIRPOWER

POWER* Use the AIR button tochange the blinking
items and the POWER
button to confirm thechange.
Set Year, Month, Day,Hour, Minute in thisorder. The clock starts
when Minute isconfirmed.

Date andtime

AIR
DATE

* Press and hold the
AIR button until theLCD display switchesfrom AIR - HOLD (1stbuzzer sound, blip)
to ADJ (2nd buzzersound, blip) and thenrelease the button.

GasConcentration
Display* After adjustment, themonitor returns to theuser mode menu.

23* After adjustment, themonitor returns to theuser mode menu.

6-2-3. Auto calibration
This is how to preset the concentration of the
prepared span calibration gas to the gas
monitor and perform calibration in a single
step.
Item
A-CAL

LCD

* Waiting for gas
introduction.

A-CAL(Blinking)↓Present
Concentration
Value Display

Details

POWERPASSPOWER

Adjustment
Value Display

POWER* Default setting
50%LEL* How to change
default setting.
First, press the AIR+MODE Button.
Then, press AIR forto change.
Finally, press MODEfor to enter.

A-CAL24* Starts the gas
supply. After 60
seconds, press thePOWER button. It isautomaticallyadjusted to thepreset value.
* After span
adjustment, themonitor displays
PASS and thenreturns to the user
mode menu.
* If span adjustment isfaulty, GAS NAME FAIL is displayed.
Press the MODE
button to reset.
* Stops the gas
supply.

6-2-4. Manual calibration
This is how to perform calibration withmanually set to the concentration value of theprepared span calibration gas.
ItemM-CALLCD

* Press the POWER
button to confirm theadjustment value.

POWERDetails* After spanadjustment, themonitor displays
END and thenreturns to the user
mode menu.
* If span adjustment isfaulty, GAS NAME FAIL is displayed.
Press the MODE
button to reset.

END

POWER* Waiting for gas
introduction.

Concentration
Display(Blinking)



M-CAL

* Press the AIR button
to increase the value
for the settings 60
seconds after
starting the gas
supply (AIR + MODEto decrease the).
value
25

* Stops the gas supply.

6-3. 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 clothetc., to remove dust.
Do not use water or organic solvent forcleaning because they may cause
malfunctions.

NOTE

The replacement intervals are recommendation only. Theintervals may change depending on the operating
conditions.
These intervals do not mean the warranty periods either.
*** The result of the daily or regular maintenance may
determine when to replace the parts.

6-4. List of recommended regularreplacement parts
NameGassensorRubberseals
Waterproof
filter

Maintenanceintervals

Replacement
intervals

Quantity(pieces perunit)

Remarks

6 months

3 years

1*-2 years

1 set*Before andafter use

6 months or
whencontaminated14123-6394-40* The operation must be checked after replacement by aqualified service engineer. For the stable operation of
the gas monitor and safety, ask a qualified service
engineer to take care of replacement of the parts
whose operation must be checked. Request RIKENKEIKI for operation check.
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7-3. Disposal of products
When the gas monitor is disposed of, it mustbe treated properly as an industrial waste inaccordance with the local regulations.
<Disposal of Batteries>• When disposing of the gas monitor in EU
member states, sort the batteries asspecified. Handle the removed batteries
according to the classified refuse collection
system and recycling system based on theregulations of EU member states. Contact
RIKEN KEIKI to dispose of the gas monitor.

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8Troubleshooting
The troubleshooting does not explain thecauses of all the malfunctions which occur on
the gas monitor. This simply helps to find thecauses of malfunctions which frequentlyoccur.
If the gas monitor shows a symptom which is
not explained in this manual, or still has
malfunctions even though remedial actions
are taken, please contact RIKEN KEIKI.
Symptoms

CausesActions

Systemabnormalities
SYSTEM FAIL
Sensorabnormalities
SENSOR FAIL

A circuitabnormality
occurred.
A sensor has
failed.

Request RIKEN
KEIKI for repair.
Request RIKEN
KEIKI for repair.

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A low battery
voltage alarm isdisplayed.
BATTERY FAIL

The battery levelis low.

Fresh airadjustment
cannot beperformed.
AIR FAIL
Spanadjustment
cannot beperformed.
CH4 FAIL
Clock
abnormalities
CLOCK FAIL

Fresh air is not
supplied aroundthe gas monitor.
Span calibration
gas withappropriate
concentration is
not supplied.
Abnormalities of
the internal clock
The gas monitor
is left for a longtime with thebatteries
removed (or withdead batteries).

Turn off the power
and replace the drybatteries with newones in a
non-hazardousarea.
Supply fresh air.

Supply spancalibration gas withappropriate
concentration.
Make a setting ofDate/Time. If sucha symptom isobserved
repeatedly, thebuilt-in clock isseeminglymalfunctioning.

9Product Specifications
Detection
principle
Gas to be
detected *1
Concentration
display
Detection
range
Display
resolution
Detection
methodAlarm
setpoint value
Displays
Responsetime (underthe sameconditions)
Gas alarmtype

New ceramic catalytic typeGas alarm
displayi-C4H10 or CH4
Gas alarm
activation
Fault
alarm/self
diagnosis

LCD digital display (seven-segment +symbol)
0 to 100%LEL
1%LEL

Fault alarm
displayFault alarm
pattern
FunctionsDiffusion type
10%LEL(1st)/50%LEL(2nd)/100%LEL(OVER)
Battery level icon
90% response: within 30 seconds

Power supply
Continuousoperatingtime

2 gas alarm (1st/2nd), OVER

Operatingtemperature
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Lamp blinking, intermittent buzzer
sounding, gas concentration display
blinking, and vibration
Self-latching (Non latching after reset)
System abnormalities, sensor
connection abnormalities, battery
voltage drop, calibration failure, andclock abnormalities
Lamp blinking, intermittent buzzer
sounding, and detail display
Self-latching
LCD backlight, peak display, and datalogger
AAA alkaline dry batteries x 2 (or AAA
Ni-MH batteries <Eneloop> available)
About 35 hours (25ºC, no alarm and nolighting, alkaline dry batteries)
About 30 hours (25ºC, no alarm and nolighting, Ni-MH batteries)-20 to +50ºC

Operating
humidities
Explosion-proof structure
Explosion-proof class *2

Below 90%RH (Non-condensing)

AuthenticationsExternal
dimensions
WeightIECEx, ATEX,UKEX

Intrinsically safe explosion-proofstructure
ATEX / UKEXⅡ1G Ex ia ⅡB T4/T3 Ga,ⅠM1 Ex iaⅠMa
IECEx
Ex ia ⅡB T4/T3 Ga, Ex iaⅠMa

Approx. 54 (W) x 67 (H) x 24 (D) mm(projection portions excluded)
Approx. 80 g (clip excluded)* Specifications subject to changes without notice.

*1 A gas to be detected depends on the monitor type.
*2 Applicable ignition temperature is T3 for therechargeable battery type and T4 for the dry battery
type.

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