{"product_id":"bently-nevada-3500-63-163179-04-hazardous-gas-monitor-module","title":"Bently Nevada 3500\/63 163179-04 Hazardous Gas Monitor Module","description":"\u003cp\u003eThe Bently Nevada \u003cstrong\u003e3500\/63\u003c\/strong\u003e Hazardous Gas Monitor (Part Number \u003cstrong\u003e163179-04\u003c\/strong\u003e) is a six-channel safety-system module designed to measure combustible gas concentrations, such as hydrogen and methane, as a percentage of the lower explosive level (LEL). It interfaces with heated catalytic-bead gas sensors to evaluate environmental conditions within enclosed or confined industrial spaces, such as gas turbine enclosures and compressor skids, issuing tiered alarms to protect personnel and equipment from explosion hazards.\u003c\/p\u003e\n\u003ch3\u003eSensor Interface and Signal Conditioning\u003c\/h3\u003e\n\u003cp\u003eThe module supports 3-wire heated catalytic-bead gas sensors utilizing a single-arm resistance bridge configuration across its six independent channels. It delivers a regulated constant current to each sensor element while monitoring input impedance and line integrity to detect open circuits in field wiring or sensor elements.\u003c\/p\u003e\n\u003cp\u003eIncoming catalytic signals are processed to calculate LEL percentages, providing continuous surveillance and rapid response capabilities in harsh operational environments.\u003c\/p\u003e\n\u003ch3\u003eAlarm Management and System Outputs\u003c\/h3\u003e\n\u003cp\u003eReal-time gas concentrations are evaluated continuously against programmable Alert and Danger over-alarm setpoints configured via software. The unit features adjustable time delays ranging from 1 to 60 seconds to prevent nuisance trips during transient gas puffs.\u003c\/p\u003e\n\u003cp\u003eEach channel provides a proportional +4 to +20 mA recorder output representing 0 to 100% full scale, alongside front-panel LED indicators displaying operational status, communication traffic, calibration modes, and channel bypass states.\u003c\/p\u003e\n\u003ch3\u003eTechnical Parameters\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e3500\/63 163179-04\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003e3500 Machinery Protection System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eHazardous Gas Monitor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Channels\u003c\/td\u003e\n\u003ctd\u003e6 channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Sensors\u003c\/td\u003e\n\u003ctd\u003eHeated catalytic-bead gas sensors (Hydrogen and Methane)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e0 to 100% LEL (Lower Explosive Level)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecorder Output\u003c\/td\u003e\n\u003ctd\u003e+4 to +20 mA proportional to full scale (600 $\\Omega$ maximum load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Transducer Power\u003c\/td\u003e\n\u003ctd\u003e+24 Vdc @ 1.8 A minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e7.0 W typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-30 deg C to +65 deg C (-22 deg F to +150 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e12.6 cm x 12.4 cm x 2.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What sensor types are compatible with the \u003cstrong\u003e3500\/63 163179-04\u003c\/strong\u003e monitor?\u003c\/p\u003e\n\u003cp\u003eA: This module is designed specifically for use with 3-wire heated catalytic-bead gas sensors monitoring combustible gases like hydrogen and methane.\u003c\/p\u003e\n\u003cp\u003eQ: Can this module be deployed in a redundant configuration?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the 3500\/63 monitors can be utilized in either simplex or Triple Modular Redundant (TMR) rack configurations for critical safety applications.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":68025629999413,"sku":"3500\/63 163179-04","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/350045-01-00_5a1b2f56-ac72-4b10-a0c5-357faca11406.png?v=1793691929","url":"https:\/\/www.5gplc.com\/products\/bently-nevada-3500-63-163179-04-hazardous-gas-monitor-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}