The RAEGuard IR is a permanently mounted (fixed) hydrocarbon gas sensor/transmitter that operates from a 9 to 36 VDC power source and provides an analog (4 to 20mA) and digital (RS-485) signal output in the range of 0 to 100% LEL hydrocarbon equivalent. The RAEGuard IR is based on RAE Systems’ patented technology of non-dispersive infrared (NDIR) for methane or hydrocarbon. Housed in an explosion-proof enclosure, the RAEGuard IR is equipped with a local digital display of the gas concentration and function keys for performing calibration. The RAEGuard IR is operated with a standard 4 to 20mA/RS-485 controller or as a stand-alone sensor module.

Fixed HydrocarbonGasMonitor, 4 to 20mA/RS-485 Transmitter, FGM-12XX


Key Features

	•	Non-dispersive infrared technology with built-in temperature compensation
	•	4 to 20mA analog and RS-485 digital signal output of 0 to 100%LEL hydrocarbons including methane, propane
	•	No poisoning problem on catalytic beads
	•	Explosion-proof enclosure for hazardous environment application
	•	Local displays with adjustment keys
	•	Non-intrusive calibration
	•	Magnetic key interface eliminates need to open explosion-proof housing when making calibration or other minor adjustments
	•	Long life infrared source and detector
	•	Operation at 9 to 36 VDC
	•	Dry-contact output (<30V, 2A)

Applications

	•	Refineries
	•	Oil production
	•	Chemical plants
	•	Industrial safety
	•	Waste water treatment plants
	•	Shipyards and maritime
	•	Power plants
	•	Steel mills

Hazardous Location Classification

	•	UL: Class I, Division 1, Groups B, C and D
	•	Temperature Code T6
	•	Chinese Certificate: Ex d IICT6

Downloads

		RAEGuard IR Data Sheet (124 KB)
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