General Monitors' IR400 Combustible Gas Detector protects against the hazards of ethylene gas vapors

General Monitors' IR400 Combustible Gas Detector has achieved dual FM and CSA performance verification, meeting FM 6310, FM 6320 and CSA C22.2 requirements.

With an IR point sensing element, the Model IR400 Point IR Combustible Gas Detector is engineered to protect people, equipment and facilities against the hazards of ethylene gas vapors. Its heated optics eliminate condensation, and a dirty optics indicator helps discriminate between true alarms and maintenance needs.

The microprocessor-based IR400 is designed to continuously monitor combustible gases in the lower explosive limit (LEL) range and provide a 4 to 20 mA analog signal proportional to the 0 to 100% LEL concentration. The detector also monitors other conditions such as supply voltage and optical path integrity. Its electronics are contained within an explosion-proof housing so that detector information can be processed locally.

The IR400 operates by measuring the absorption of infrared radiation passing through a volume of gas using a dual-beam, single-detector method. The IR detector is engineered to measure the intensity of two specific wavelengths, one at an absorption wavelength and another outside of the absorption wavelength. The gas concentration is determined by comparing these two intensities.

The IR400 Detector can be configured for analog output, Modbus and HART. The IR400 is designed to provide a two-wire RS-485 addressable communication link, which supports the Modbus protocol, and is used to monitor status and settings. Warning and alarm and maintenance events are available via Modbus or HART, as well as diagnostics and correction action capabilities. The IR400 has CSA, FM, ATEX and IECEx approvals; the CE Marking; and is suitable for use in SIL 3 systems.

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