JIANGSU ANTAI · MINING SAFETY
GJC4(B)
Low-concentration Methane Sensor
A catalytic combustion methane sensor for use with a compatible power-off controller on coal mining, tunnelling and drilling equipment.
TECHNICAL OVERVIEW
Key specifications
| Measurement range | 0–4% CH₄ |
|---|---|
| Response time | ≤20 s |
| Power supply | 9–24 V DC |
| Display | Four-digit red LED |
| Sensing principle | Catalytic combustion |
9–24 V DC supply; four-digit red LED display; adjustable alarm, power-off and reset thresholds.
Catalogue MA reference: MFB130469. Confirm the current certificate, scope and selected configuration before ordering.
APPLICATION & SELECTION
Low-concentration methane sensing on mining equipment
The GJC4(B) monitors methane in the 0–4% CH₄ range. It is described in the catalogue for operation with a compatible methane power-off controller on mining machinery. Its catalytic combustion sensing principle distinguishes it from the laser measurement used by the GJJ100C.
What to confirm before ordering
Confirm the required methane range, 9–24 V DC supply and controller compatibility. Discuss the alarm, power-off and reset thresholds with the manufacturer and obtain the model-specific operating and calibration documentation.
Request model-specific documentation
Email antaiair@163.com with the model, gases to be monitored, machinery, supply voltage, interfaces and expected quantity. Ask for the current datasheet, applicable certificates and product support information.
Specifications are reproduced from the supplied Chinese catalogue. Installation and maintenance must follow current manufacturer documentation and the requirements of the intended site.