Infrared Combustible Sensor Module

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TELSEC Controllers provide an integrated surveillance solution to monitor and control all environmental and access control functions and equipment alarming.

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A stand alone module with the intelligence to provide integral alarms. A base model already loaded with features you need: FM Approval for performance and safety, Aluminum or 316 Stainless Steel enclosure, 4-20 mA output, Modbus RTU RS-485 interface, Option for non-Methane gas configuration.


Information Technology (IT) at the component level! An infrared (IR) Combustible Gas sensor module with the brilliance to provide 4-20 mA and Modbus output. A stand alone module with the intelligence to provide integral alarms. A base model already loaded with features you need. A gas detector that is FactoryMutual approved and ready to manage your gas risk. The IR Gas Sensor Module provides all the built-in features desired by instrumentation and safety professionals.


  • Local scrolling display.
  • Non-intrusive calibration,menu driven system.
  • FM Approved for performance and hazardous area operation, Class I, Div. 1, Group B, C, D. NEMA4X rated for -40° to 176°F areas.
  • Flexible Modbus, 4-20mA, Sentry bus, relay interface.
  • SIL Certified.


Part Number – 150930
Sensor Type – Infrared, Dual Wavelength

Default – 0-100% LEL Methane or Propane
User Setting – 0-100% by vol. Methane
Other Gases – %LEL Ethanol, Ethylene, Hexane, Butane, Propane, Pentane
Repeatability – ±1% LEL
Response Time – <10 sec to 60% full scale
Accuracy – ±1% for 0-50% LEL range, ±2% for 51-100% LEL range
Sensor Life – Typically >5 years

Display – Fixed and Scrolling LED
Relay – 0.25 Amp. High Alarm, Low Alarm, Trouble, all SPDT
Signal Output – Analog 4-20 mA (Trouble, 0 mA)
Optional Relays – Serial RS-485 Modbus RTU; 8 amp high, low

Electrical Data:
Power Consumption – 3 Watts
Connection Type – 3 or 4 wire
Input voltage – 24 VDC nominal: 10-30VDC

Operating Range:
Ambient Temp Range – -4° to 140°F (-20° to 60°C)
Relative Humidity – 5-99%

Dimentions – (Al) 8.1 x 4.8 x 4.9 in. (21 x 12 x, (SS) 7.5 x 4.4 x 4.9 in. (19 x 11 x 12 cm),
Weight – (Al) 2.7 lb. (1.3 Kg) — (SS) 5.4 lb. (2.6 Kg
Housing – Standard: Epoxy coated Aluminum, Optional: 316 Stainless Steel
Hazardous Area – Explosion proof, Class I, Div. 1
Classification – Groups B, C, D Class I, Zone 1; Group IIB+H2 IP66, IP65
Warranty – 90 days

FM Approval 6320 – Combustible Gas Detector Performance
FM Approval 3600SIL – Class I Div. 1, Groups B, C, D
Certified – FMEDA data for SIL-1
NFPA72 Compliant

Specifications subject to change without notice.

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