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The 3500/63 Hazardous Gas Monitor is a six-channelmonitor that is used as a safety-system element byproviding levels of alarms based on the concentration ofcombustible gases. An alarm issued by this monitorindicates that the gas concentration is sufficient to causepersonal safety concerns because of explosion orasphyxiation. It is designed for use with heated catalytic-bead gas sensors (Hydrogen and Methane) and indicateshazardous gas concentration as a percentage of the lowerexplosive level (LEL). The monitors can be utilized ineither a simplex or redundant (TMR) 3500 Rack configuration.

The Hazardous Gas Monitor application is particularlysuited for enclosed or confined spaces where combustiblegases are used as fuels or are being handled, pumped orcompressed. If a leak occurs, the gases may accumulateand reach a potentially explosive concentration. Detectionand alarming on gas concentrations is critical for the protection of personnel in the area and for the protection ofthe equipment. Housings around natural gas firedindustrial gas turbines, hydrogen pipeline compressors, orcompressor doghouses are all examples of confined spaces where combustible gases could accumulate.

When used in a Triple Modular Redundant (TMR) configuration, Hazardous Gas Monitors must be installe dadjacent to each other in groups of three. When used inthis configuration, two types of voting are employed toinsure accurate operation and to avoid single- point failures.

Frequently Asked Questions

What is the primary function of the Bently Nevada 3500/63 module?

It continuously monitors hazardous, toxic, or combustible gases around rotating machinery and drives system alarm .

How many channels does the 163179-04 module support?

It supports exactly 6 independent gas monitoring channels.

Can this module be used in a TMR (Triple Modular Redundant) 3500 rack?

Yes, it can operate in standard Simplex mode or within a TMR rack configuration.

What input signal types does the 163179-04 accept?

It accepts standard 4-20 mA, 0-5 Vdc, and 0-10 Vdc analog transmitter outputs.

Product Applications

Oil and Gas (Oil and Gas Fields and Compressor Platforms): Monitors flammable gas leaks at the edges of compressor buildings, natural gas pipelines, and offshore platforms.

Petrochemical and Chemical Plants: Used in areas releasing flammable and explosive gases, such as reforming and cracking processes, to provide alarms for excessive gas concentrations and emergency shutdown (ESD).

Power Plants and Gas Turbine Power Stations: Installed inside the gas turbine casing or fuel gas compartment to prevent the risk of explosions caused by gas accumulation.

Metallurgical and Steel Plants: Monitors enclosed plant areas with potential carbon monoxide or flammable gas leaks, such as blast furnace gas and converter gas recovery systems.