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General Monitors has launched the IR5500 open path gas detector, designed to provide continuous monitoring of combustible gas concentrations in hazardous-operation plants.

The IR5500 open path gas detector meets agency performance on both the LELmeter and ppmmeter scales, has a split-range scale for ppmmeter and LELmeter monitoring, is certified for operation at -55C, and is certified to FM approvals, EN, and IECEx performance standards.

Outdoor combustible gas leaks pose a significant danger at petrochemical facilities, as well as in electric utility and wastewater treatment plants.

Leak sources typically include pipelines, valves, tanks, burners, compressors, separators, flare systems, aeration ponds, and other equipment.

The distributed nature of equipment within large facilities often makes traditional point-monitoring combustible gas detectors either ineffective or cost prohibitive.

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 ppmmeter and 0 to 5 LELmeter range.

In addition, 0 to 2,000 ppmmeter and 0 to 1 LELmeter scales are also available for monitoring propane.

The IR5500 provides two 4-20mA analogue 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 result is precision accuracy with reliability in harsh environments and improved false alarm rejection.

The IR5500 features a built-in display, which simplifies installation and maintenance while reducing the total cost of ownership.

It requires no tools for alignment at any range and can be aligned without a scope at 100m or more.

At installation, technicians simply utilise the IR5500’s integral display and adjustable mounting arms, which also eliminates the typical bulky setup equipment (for example, digital voltmeters, handheld alignment aids) commonly required with other detectors.

Sensor data and status information from the IR5500 can be transmitted up to 9,000ft to any industrial analogue-to-digital (A/D) converter for use in multipoint computer-based monitoring.

Event logging is provided for faults, maintenance, warning, and alarm events.

The IR5500 is available with Hart and Modbus, providing complete status and control capability in the control room.

The IR5500’s sensitivity can be checked by placing a test gas film in front of the receiver.

The instrument is calibrated at the factory and needs no further calibration.

It also requires little maintenance other than a periodic visual inspection, test gas film check, and cleaning of the windows to ensure dependable performance.

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