Model GX-2012

Specifications
Gas Detected

Combustible Gases(Methane as standard)% Volume
Methane

Oxygen（O2）Detection Principle

Catalytic combustion

Thermal conductivity

Galvanic cell

Display

Digital LCD with 7 segments, auto backlight during alarm

Preset Alarms(User Adjustable)

1st alarm 10% LEL
2nd alarm 50% LEL
Over alarm 100% LEL

Alarm Types

Gas alarms :1st and 2nd, STEL, TWA (user adjustable) and OVER
Trouble alarms : Sensor connection, low battery, low flow, circuit trouble and calibration error

Alarm Methods

Gas alarms :Flashing lights, two tone buzzer, and vibration
Trouble alarms : Flashing lights, trouble displayed, intermittent buzzer, and vibration

Detection Range
Sampling Method

0~100% LEL

C0E-0701

Hydrogen Sulfide（H2S）

Carbon Monoxide（CO）Electro-chemical cell

0~100% Vol.
0~40% Vol.
0~30 ppm
Internal sample pump, flow rate nominal 0.5 LPM, includes hydrophobic filter

No alarms for% Vol. CH4

1st2ndTWA
STEL
Over

Low alarm 19.5%
High alarm 23.5%
Over alarm 40.0%

Operating Temp. & Humidity
Response Time

-20°C to +50°C (-4°F to 122°F )0 to 95% RH, non -condensing
Within 30 seconds ( T90)
Alkaline battery : 15 hours
Li-Ion battery : 10 hours
Li-Ion battery pack, or 3 "AA" Alkaline battery pack ; interchangeable

Optionalaccessories

・ SDM-2012 calibration stations
・ Li-Ion battery pack

5 ppm
30 ppm10 ppm15 ppm30 ppm0~500 ppm

1st 25 ppm
2nd 50 ppm
TWA 25 ppm
STEL 200 ppm
Over 500 ppm

PERSONAL FOUR GAS MONITOR

Continuous Operation
Power Source
Safety Rating
・ ATEX
II 1G Ex ia IIC T4 Ga
・ IECEx II 1G Ex ia IIC T4 Ga
・ TIIS・ CE
Dimensions & Weight Approx. 173 (H) x 71( W ) x 43 ( D) mm, approx. 360g ( include 3 "AA" Alkaline batteries )Standard accessories ・ Belt Clip・ Rubber nozzele
・ Wrist strap
・ Manual・ Alkaline battery pack・ Sample draw hoses
・ Alkaline dry cell ( 3-AA size)

・ Charger
・ Datalogging software

Specifications subject to change without notice.

Specifications
Gas Detected
Detection Principle
Detection Range
Sampling Method
Display

Combustible Gases(Methane as standard)% Volume
MethaneModel GX-2012GT
Oxygen（O2）

PPM Methane

Catalytic combustion

Thermal conductivity
MOS/Catalytic
Galvanic cell0~100% LEL
0~100% Vol.
0~5000 ppm
0~40% Vol.
Internal sample pump, flow rate nominal 0.5 LPM, includes hydrophobic filter
Digital LCD with 7 segments, auto backlight during alarm
Increasing tone/
Light pulse asconcentration
increases

0~500 ppm

1st 25 ppm
2nd 50 ppm
TWA 25 ppm
STEL 200 ppm
Over 500 ppm

Preset Alarms(User Adjustable)

1st alarm 10% LEL
2nd alarm 50% LEL
Over alarm 100% LEL

Alarm Types

Leak Tracker Mode: Escalating audible/visual alarm, changes with gas level (audible can be turned off)
Gas alarms:
1st and 2nd, STEL, TWA (user adjustable) and OVER
Trouble alarms:
Sensor connection, low battery, low flow, circuit trouble and calibration error

Alarm Methods

Gas alarms:
Flashing lights, two tone buzzer, and vibration
Trouble alarms: Flashing lights, trouble displayed, intermittent buzzer, and vibration

Operating Temp. & Humidity
Response Time
Continuous Operation

No alarms for% Vol. CH4

Low alarm 19.5%
High alarm 23.5%
Over alarm 40.0%

Carbon Monoxide（CO）-20°C to +50°C (-4°F to 122°F )0 to 95% RH, non -condensing
Within 30 seconds ( T90)
Alkaline battery : 15 hours
Li-Ion battery : 10 hours
Li-Ion battery pack, or 3 "AA" Alkaline battery pack ; interchangeable

Power Source
Safety Rating
・ TIIS・ CE・ ATEXII 1G Ex ia IIC T4 Ga
・ IECEx II 1G Ex ia IIC T4 Ga
Dimensions & Weight Approx. 173 (H) x 71( W ) x 43 ( D) mm, approx. 360g ( include 3 "AA" Alkaline batteries )Standard accessories ・ Belt Clip・ Rubber nozzele
・ Wrist strap
・ Manual・ Alkaline battery pack・SDM-2012calibrationstations
・Sampledrawhoses
・ Charger
Optional
・ Li-Ion battery pack・ Alkaline dry cell ( 3-AA size)
・ Datalogging software
accessories

APPLICATION

Specifications subject to change without notice.

Distributed by:

2 -7-6 Azusawa, Itabashi-ku, Tokyo 174 - 8744, Japan

Phone : +81-3-3966-1113
Telefax : +81-3-3558-9110
E-mail : intdept@rikenkeiki.co.jp
Web site : http://www.rikenkeiki.co.jp/english
Printed in Japan

C0E-0701-180630 S

Personal monitoring
Confined spaces
Refineries/petrochemical/
wastewater treatment
Utilities
Chemical plants
Hazardous material
Water
Fire services
MiningFEATURES
Monitors LEL, and % volume combustibles,O2, CO and H2S (GX-2012 )Monitors ppm, LEL, and % volume
combustibles, O2 and CO (GX-2012GT )ppm leak detector, detects down to 10
ppm CH4 ( GX-2012GT )“Leak tracker” audible /visual alarm mode
(GX-2012GT )0 to 100% volume methane option
Auto-ranging display of % LEL and % volume
Barhole test mode

Snap-logging-on demand datarecording
Pump pause on demand extends
battery life
Vibration, visual, and audible alarms
Lithium ion or alkaline power source( interchangeable)
Up to 600 hours of datalogging withalarm tendsIntrinsically safe, ATEX / IECEx/CEHigh dust and water resistance design

GX-2012

GX-2012GTBuilt around high-quality micro-sensor technology, the GX-2012 is Riken’s smallest personal 5 sensor gasmonitor with a built in sample pump. Weighing only 360g, two operating modes: Normal ( for confinedspaces) and bar hole. The GX-2012 can monitor the standard confined space gases (LEL combustibles,Oxygen content, Carbon Monoxide, and Hydrogen Sulfide), and it can also measure 100% volumeMethane and dynamically display either % LEL, or % volume with its auto-ranging. The GX-2012 can beused for gas line purge testing as well as standard safety testing.

Built around high-quality micro-sensor technology, the GX-2012GT is Riken’s smallest personal 5 sensor monitor witha built in sample pump. Weighing only 360g, it has many features with set the GX-2012GT apart from the competition.
For example, it can monitor the standard gas safety hazards for gas/pipeline operations, (LEL combustibles, Oxygen
content, and Carbon Monoxide), and it also has a high-sensitivity ppm CH4 leak tracker mode which reads down to
10ppm. It can also measure 100% volume Methane and dynamically display either %LEL, or % volume with its
auto-ranging ability. The GX-2012GT is excellent for gas line purge testing and detection of small gas leaks.

Combustible(100Vol%)

Combustible(100Vol%)

Combustible

Alarm lamps(100%LEL)LCD display

Audible alarm

Large, simultaneous 4 gas
display.

Loud distinct tone with two
honeycomb buzzer openings.
95dB at 30cm distance

COIrDA port

Switches

H2S

Combustible

Three bright LED indications
with powerful vibration alarm(100%LEL)

CombustibleO2(5000ppm )Three bright LED indications
with powerful vibration alarm

O2Alarm lamps

LCD display

Audible alarm

Large, simultaneous 3 gas
display.

Loud distinct tone with two
honeycomb buzzer openings.
95dB at 30cm distance

COIrDA port

Switches

GX-2012GT gas
combination available

Battery packs
Quick release interchangeable battery packs.

Five sensor

Alkaline battery packDisplay

GX-2012 gas
combination available

Pilot indicator
Blinking for normal operation

Pump driving
indicator

Battery sign

Rotating for normaloperation

Digital display
Simultaneously
displays all gases

Five sensor

Type ALEL / % Vol / O2/ CO / H2S

Four sensor

Type BLEL / O2 / H2S / CO

Type CLEL / O2 / H2S

Type D

LEL / O2 / CO

Type ELEL / % Vol / O2

Type F

LEL / O2Three sensor
Two sensor

Please specify gas combination when ordering.

Display space

Time

Alarms, Operating message,
Optional gas names, Bargraph

Adjustable to localtime

Four sensor

Three sensor

Type A

PPM / LEL / % Vol/ O2 / CO

Type B

PPM / LEL / O2/ CO

Type C

PPM / LEL / % Vol/O2

Type D

PPM / LEL / O2

Please specify gas combination when ordering.

Li-ion battery packAccessories
Standard accessories
・Alkaline battery pack・ Rubber nozzle
・ Wrist-strap
・ Belt clip

Optional accessories
SDM-2012

Stand Alone
Calibration Station

A single module calibration
station for the GX-2012 andGX-2012GT portable gas
monitors that can calibrate,bump test, charge, andarchive data.

Charger BC-2012
AC adaptor for charger BC-2012

GX-2012

GX-2012GT

Built around high-quality micro-sensor technology, the GX-2012 is Riken’s smallest personal 5 sensor gas
monitor with a built in sample pump. Weighing only 360g, two operating modes: Normal ( for confinedspaces) and bar hole. The GX-2012 can monitor the standard confined space gases (LEL combustibles,Oxygen content, Carbon Monoxide, and Hydrogen Sulfide), and it can also measure 100% volume
Methane and dynamically display either % LEL, or % volume with its auto-ranging. The GX-2012 can beused for gas line purge testing as well as standard safety testing.

Built around high-quality micro-sensor technology, the GX-2012GT is Riken’s smallest personal 5 sensor monitor witha built in sample pump. Weighing only 360g, it has many features with set the GX-2012GT apart from the competition.
For example, it can monitor the standard gas safety hazards for gas/pipeline operations, (LEL combustibles, Oxygencontent, and Carbon Monoxide), and it also has a high-sensitivity ppm CH4 leak tracker mode which reads down to10ppm. It can also measure 100% volume Methane and dynamically display either %LEL, or % volume with its
auto-ranging ability. The GX-2012GT is excellent for gas line purge testing and detection of small gas leaks.

Combustible(100Vol%)

Combustible(100Vol%)

Combustible

Alarm lamps(100%LEL)LCD display

Audible alarm

Large, simultaneous 4 gas
display.

Loud distinct tone with two
honeycomb buzzer openings.
95dB at 30cm distance

COIrDA port

Switches

H2S

Combustible

Three bright LED indications
with powerful vibration alarm(100%LEL)

Combustible

O2(5000ppm )Three bright LED indications
with powerful vibration alarm

O2

Alarm lamps

LCD display

Audible alarm

Large, simultaneous 3 gas
display.

Loud distinct tone with two
honeycomb buzzer openings.
95dB at 30cm distanceCOIrDA port

Switches

GX-2012GT gas
combination available

Battery packs
Quick release interchangeable battery packs.

Five sensor

Alkaline battery packDisplay

GX-2012 gas
combination available

Pilot indicator
Blinking for normal operation

Pump driving
indicator

Battery sign

Rotating for normal
operation

Digital display
Simultaneously
displays all gases

Five sensor

Type ALEL / % Vol / O2/ CO / H2S

Four sensor

Type BLEL / O2 / H2S / CO

Type CLEL / O2 / H2S

Type D

LEL / O2 / CO

Type ELEL / % Vol / O2

Type F

LEL / O2

Three sensor
Two sensor

Please specify gas combination when ordering.

Display space

TimeAlarms, Operating message,
Optional gas names, Bargraph

Adjustable to local
time

Four sensor

Three sensor

Type A

PPM / LEL / % Vol/ O2 / CO

Type B

PPM / LEL / O2/ CO

Type C

PPM / LEL / % Vol/O2Type D

PPM / LEL / O2

Please specify gas combination when ordering.

Li-ion battery packAccessories
Standard accessories
・Alkaline battery pack・ Rubber nozzle
・ Wrist-strap
・ Belt clip

Optional accessories
SDM-2012

Stand Alone
Calibration Station

A single module calibration
station for the GX-2012 andGX-2012GT portable gas
monitors that can calibrate,bump test, charge, andarchive data.

Charger BC-2012
AC adaptor for charger BC-2012

Model GX-2012

Specifications
Gas Detected

Combustible Gases(Methane as standard)% Volume
Methane

Oxygen（O2）Detection Principle

Catalytic combustion

Thermal conductivity

Galvanic cell

Display

Digital LCD with 7 segments, auto backlight during alarm

Preset Alarms(User Adjustable)

1st alarm 10% LEL
2nd alarm 50% LEL
Over alarm 100% LEL

Alarm Types

Gas alarms :1st and 2nd, STEL, TWA (user adjustable) and OVER
Trouble alarms : Sensor connection, low battery, low flow, circuit trouble and calibration error

Alarm Methods

Gas alarms :Flashing lights, two tone buzzer, and vibration
Trouble alarms : Flashing lights, trouble displayed, intermittent buzzer, and vibration

Detection Range
Sampling Method

0~100% LEL

C0E-0701

Hydrogen Sulfide（H2S）

Carbon Monoxide（CO）Electro-chemical cell

0~100% Vol.
0~40% Vol.
0~30 ppm
Internal sample pump, flow rate nominal 0.5 LPM, includes hydrophobic filter

No alarms for% Vol. CH4

1st2ndTWASTELOver

Low alarm 19.5%
High alarm 23.5%
Over alarm 40.0%

Operating Temp. & Humidity
Response Time-20°C to +50°C (-4°F to 122°F )0 to 95% RH, non -condensing
Within 30 seconds ( T90)
Alkaline battery : 15 hours
Li-Ion battery : 10 hours
Li-Ion battery pack, or 3 "AA" Alkaline battery pack ; interchangeable

Optional
accessories

・ SDM-2012 calibration stations
・ Li-Ion battery pack

5 ppm
30 ppm10 ppm15 ppm30 ppm0~500 ppm

1st 25 ppm
2nd 50 ppm
TWA 25 ppm
STEL 200 ppm
Over 500 ppm

PERSONAL FOUR GAS MONITOR

Continuous Operation
Power Source
Safety Rating
・ ATEX
II 1G Ex ia IIC T4 Ga
・ IECEx II 1G Ex ia IIC T4 Ga
・ TIIS・ CE
Dimensions & Weight Approx. 173 (H) x 71( W ) x 43 ( D) mm, approx. 360g ( include 3 "AA" Alkaline batteries )Standard accessories ・ Belt Clip・ Rubber nozzele
・ Wrist strap
・ Manual・ Alkaline battery pack・ Sample draw hoses
・ Alkaline dry cell ( 3-AA size)

・ Charger
・ Datalogging software

Specifications subject to change without notice.

Specifications
Gas Detected
Detection Principle
Detection RangeSampling MethodDisplay

Combustible Gases(Methane as standard)% Volume
MethaneModel GX-2012GT
Oxygen（O2）

PPM Methane

Catalytic combustion

Thermal conductivity
MOS/Catalytic
Galvanic cell
0~100% LEL
0~100% Vol.
0~5000 ppm
0~40% Vol.
Internal sample pump, flow rate nominal 0.5 LPM, includes hydrophobic filter
Digital LCD with 7 segments, auto backlight during alarm
Increasing tone/
Light pulse asconcentration
increases

0~500 ppm

1st 25 ppm
2nd 50 ppm
TWA 25 ppm
STEL 200 ppm
Over 500 ppm

Preset Alarms(User Adjustable)

1st alarm 10% LEL
2nd alarm 50% LEL
Over alarm 100% LEL

Alarm Types

Leak Tracker Mode: Escalating audible/visual alarm, changes with gas level (audible can be turned off)
Gas alarms:
1st and 2nd, STEL, TWA (user adjustable) and OVER
Trouble alarms:
Sensor connection, low battery, low flow, circuit trouble and calibration error

Alarm Methods

Gas alarms:
Flashing lights, two tone buzzer, and vibration
Trouble alarms: Flashing lights, trouble displayed, intermittent buzzer, and vibration

Operating Temp. & Humidity
Response Time
Continuous Operation

No alarms for% Vol. CH4

Low alarm 19.5%
High alarm 23.5%
Over alarm 40.0%

Carbon Monoxide（CO）-20°C to +50°C (-4°F to 122°F )0 to 95% RH, non -condensing
Within 30 seconds ( T90)
Alkaline battery : 15 hours
Li-Ion battery : 10 hours
Li-Ion battery pack, or 3 "AA" Alkaline battery pack ; interchangeable

Power Source
Safety Rating
・ TIIS・ CE・ ATEXII 1G Ex ia IIC T4 Ga
・ IECEx II 1G Ex ia IIC T4 Ga
Dimensions & Weight Approx. 173 (H) x 71( W ) x 43 ( D) mm, approx. 360g ( include 3 "AA" Alkaline batteries )Standard accessories ・ Belt Clip・ Rubber nozzele
・ Wrist strap
・ Manual・ Alkaline battery pack・SDM-2012calibrationstations
・Sampledrawhoses
・ ChargerOptional
・ Li-Ion battery pack・ Alkaline dry cell ( 3-AA size)
・ Datalogging software
accessories

APPLICATION

Specifications subject to change without notice.

Distributed by:

2 -7-6 Azusawa, Itabashi-ku, Tokyo 174 - 8744, Japan

Phone : +81-3-3966-1113
Telefax : +81-3-3558-9110
E-mail : intdept@rikenkeiki.co.jp
Web site : http://www.rikenkeiki.co.jp/english
Printed in Japan

C0E-0701-180630 S

Personal monitoring
Confined spaces
Refineries/petrochemical/wastewater treatment
Utilities
Chemical plants
Hazardous material
Water
Fire services
MiningFEATURES
Monitors LEL, and % volume combustibles,O2, CO and H2S (GX-2012 )Monitors ppm, LEL, and % volume
combustibles, O2 and CO (GX-2012GT )ppm leak detector, detects down to 10
ppm CH4 ( GX-2012GT )“Leak tracker” audible /visual alarm mode
(GX-2012GT )0 to 100% volume methane option
Auto-ranging display of % LEL and % volume
Barhole test mode

Snap-logging-on demand datarecordingPump pause on demand extends
battery life
Vibration, visual, and audible alarms
Lithium ion or alkaline power source( interchangeable)
Up to 600 hours of datalogging withalarm tends
Intrinsically safe, ATEX / IECEx/CEHigh dust and water resistance design