AG-GDC-100 Flammable Gas Detectors

Fixed Combustible Gas Detector

Explosion-proof catalytic bead detector for methane and combustible gases, 0–100 % LEL

4–20 mA Modbus RTU

Detects at high level for lighter-than-air gases — mount above the leak source
Two field-adjustable alarm stages drive ventilation boost and gas shut-off independently
Reports directly to BMS or PLC — no dedicated gas panel required
Catalytic sensors require scheduled bump testing and calibration to remain reliable

No forms — email directly to sales@agcontrolli.com

24-month warranty · Technical support included

Specifications

Target Gas	Methane (CH₄) / natural gas; other combustible gases on request
Measuring Range	0–100 % LEL
Resolution	1 % LEL
Sensor Technology	Catalytic combustion (pellistor)
Alarm Stages	Two, field-adjustable (typically set 20 % / 40 % LEL)
Output Signal	4–20 mA and RS-485 Modbus RTU — confirm configuration at order
Supply Voltage	24 V DC
Response Time	≤ 30 s (T90)
Ambient Temperature	−20 to +60°C
Humidity	15–90 % RH, non-condensing
Explosion Protection	Ex d IIC T6
Cable Run	Up to 1000 m
Display	LCD showing live concentration
Certifications	Manufacturer states CE, ATEX

Reliable Controls MACH-ProSysSiemens Desigo CCHoneywell EBISchneider EcoStruxureJohnson Controls Metasys

Works with any BMS that accepts 4–20 mA / Modbus RTU signals.

Fixed Carbon Monoxide Detector

Explosion-proof electrochemical CO detector for occupied plant rooms, 0–1000 ppm

Fixed Oxygen Deficiency Monitor

Oxygen depletion and enrichment monitoring where nitrogen, argon or CO₂ is stored, 0–30 % vol

Fixed Hydrogen Detector

Catalytic bead hydrogen detection for battery rooms and electrolyser areas

Send us your pipe size, media, range and protocol — we'll confirm availability and lead time.