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Detector leads industry in early detection

04 January 2011

The IR5500 open path gas detector from General Monitors redefines the industry standard as the first and only open path detector to meet agency performance requirements on both the LEL•meter and ppm•meter scales.

Detector leads industry in early detection
Detector leads industry in early detection

The detector is the industry’s first detector with split range scale for ppm•meter and LEL•meter monitoring, is the first to be certified for operation at -55ºC and is among the first major open path detectors certified to FM approvals, EN, and IECEx performance standards.

The IR5500 open path gas detector provides continuous monitoring of combustible gas concentrations. The system consists of an IR source and receiver, which continuously monitors for methane in both the 0 to 5,000 ppm•meter and 0 to 5 LEL•meter range. 0 to 2,000 ppm•meter and 0 to 1 LEL•meter scales are also available for monitoring propane. The IR5500 provides two 4 to 20 mA analog signals proportional to each of the above ranges, in addition to a digital display and relay contacts.

The IR5500’s advanced infrared sensor technology features a single beam detection design, which improves accuracy and reduces drift. The design of the sensor includes continuous self-check monitoring for fail to safe operation. Automatic gain control compensates for dirty optics, rain, and fog.

The detector features a built-in display, which simplifies installation and maintenance while reducing the total cost of ownership. The IR5500 requires no tools for alignment at any range and can be aligned without a scope at 100 meters or more. At installation, technicians simply utilise the IR5500’s integral display and adjustable mounting arms, which also eliminates the typical bulky setup equipment commonly required with other detectors.


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