The HV Vapor Sensor, a solid state diffusion type, works on the absorption-desorption principle. The detection of a specific vapor is based on the absorption on the catalytic surface at a specific temperature. The gas absorption changes the resistance between the two electrodes embedded in the catalytic element. The resistance change is directly proportional to the vapor concentration and provides the input to the module. The vapor sensor, consisting of the sensing element contained within an anodized aluminum enclosure, is protected by the porous metal-fiber disc which serves as a flame arrestor. The sensor head assembly is UL listed for hazardous locations: Class I, Division 1, Groups B, C and D.

Related Support Material : Vapor Sensor   Key: [L] = Registration Required - [R] = Reps Only

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