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Built around high-quality micro-sensor trchnology, the GX-2012GT is Riken’s smallest personal 5 sensor monitor with a 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 ceontent, and carbon moxide), and it also has a high-sensitivity ppm CH₄ leak tracker mode which reads down to 10 ppm. It can also measure 100% molume 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.


GX-2012GT gas combination available

Five sensor

Type A

PPM / LEL / %Vol / O₂ / CO

Four sensor

Type B

PPM / LEL / O₂ / CO

Type C

PPM / LEL / %Vol  / O₂

Three sensor

Type D

PPM / LEL / O₂


Specifications : GX-2012GT

Gas Detected

Combustibles Gases

% Volume

PPM Methane

Oxygen (O₂)

Carbon Monoxide

(Methane as standard)



Detection Principle

Catalytic combustion

Thermal conductivity


Galvanic cell


Detection Range

0-100% LEL

0-100% Vol.

0-5000 ppm

0-40% Vol.

0-500 ppm

Sampling Method

Internal sample pump, flow rate nominal 0.5 LPM, includes hydrophobic filter


Digital LCD with 7 segments, auto backlight during alaram

Preset Alarms (User Adjustable)


No alarms for % Vol. CH₄

Increasing tone / Light pulse as concentration increases


1st 25 ppm

1st alarm 10% LEL

Low alarm 19.5%

2nd 50 ppm

2nd alarm 50% LEL

high alarm 23.5%

TWA 25 ppm

Over alarm 100% LEL

Over alarm 40.0%

STEL 200 ppm



Over 500 ppm

Alarm Types

Leak Tracker Mode: Escalating audible/visual alarm, changes with gas level (audiblecan be turned off)

Gas alarms: 1st and 2nd, STEL, TWA (user adjustable) and OVER

Trouble alarms: Sensor connnection, low battery, low flow, circuit trouble and calibration error

Alarm Methods

Gas alarms: Flashing lights, teo tone buzzer, and vibration

Trouble alarms: Flashing lights, trouble displayed, itermittent buzzer, and vibration

Operting Temp. & Humidity

˗20°C to +50°C (-4°F to 122°F)

0 to 95% RH, non condensing

Response Time

Within 30 seconds (T90)

Continuous Operation

Alkaline battery: 15 hours

Li-ion battery: 10 hours

Power Source

Li-ion battery pack, or 3 "AA" Alkaline battery pack: interchangeable

Safety Rating

·ATEX II 1G Ex ia IIC T4

·IECEx II 1G Ex ia IIC T4



·HK               ·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


·Alkaline battery pack

Optional accessories

·SDM-2012 calibration stations

·Sample draw hoses


·Li-ion battery pack

·Alkaline dry cell (3-AA size)

·Datalogging software

Part No.: - | Category: Gas Detector | Subcategory: -

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