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MSA launches FL500-Hydrogen Flame Detector

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Hydrocarbon Engineering,

MSA has designed a new General Monitors FL500-H2Flame Detector for the protection of oil and gas refineries, chemical plants, fuel stations, and other sites managing large volumes of the gas.

Hydrogen (H2) is a colourless, odourless, highly flammable gas that is compressed under pressure and stored in tanks for industrial usage. If the gas escapes the tank holding it and is released into the air, the oxygen in the air makes it highly combustible and dangerous. The consequences of failing to detect leaking hydrogen can cause catastrophic plant accidents.

The FL500-H2 is an ultraviolet/infrared (UV/IR) flame detector designed to detect H2 fires. The sensors monitor optical radiation emitted by a H2 flame in both the UV and IR spectral ranges, while at the same time rejecting false alarm sources common within industrial job sites.

The detector’s flame sensing technology relies on the UV sensor to provide a quick response (< 3 seconds), while the IR detector monitors radiation emitted by a flame over a wide 130° field-of-view. UV/IR sensor technology offers increased immunity, operates at faster speeds, and is suited for both indoor and outdoor use.

The design of the detector features a compact footprint for ease of installation. The easy-to-read display includes three LED indicators that show normal operation, fault condition, and an alarm.

The FL500-H2 provides a number of alarm signalling output options including instant and timed fire alarm relays, 4-20 mA analogue output with HART, and RS-485 Modbus RTU. It also supports HART revision 7 and is fully FieldComm compliant.

The detector also features an automated self-check of its optical path and electronic circuitry for reliability. Every two minutes, the detector’s built in self-check technology known as Continuous Optical Path Monitoring (COPM) performs an optical and electrical check. These self-check routines are designed to ensure the optical path is clear and the electronic circuitry is operational.

The FL500-H2 Optical Flame Detector addresses a wide range of application needs. It is suitable for sites where large volumes of H2 are managed including: petroleum refineries, chemical plants (ammonia, ethylene), H2 gas generators, H2 fuel cell production, H2 fuel stations, H2 test facilities, rocket launch sites, and merchant H2 manufacturing plants.

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