دتکتور گاز CROWCON Xgard Type 3

Introduction Xgard Type 3

Flameproof flammable gas detector

This version of Xgard is a Flameproof gas detector, designed to detect flammable gas present in ambient air, at concentrations not exceeding the Lower Explosive Limit (LEL) of the target gas for which it is calibrated. Xgard Type 3 operates using pellistors as part of a 3-wire Wheatstone Bridge (WB) circuit, and must be connected to a suitable control card. The detector is certified II 2 GD Ex db IIC T6 Gb for operation up to 50°C (120°F), II 2 GD Ex db IIC T4 Gb for operation up to 80°C (176°F), and is suitable for use in Zone 1 and Zone 2 hazardous areas. Electrical connections to the detector are made via the terminal block on the PCB shown below.