Crowcon Xgard Type 4 High Temperature Flammable Gas Detectors. Exd Flameproof Flammable Gas Detectors use poison resistant sensors. Detector comes in either 316 Stainless Steel or Aluminium Housing. Contains terminals for 3-wire mV Wheatstone Bridge Output. Operating Temperature of -20°C to 150°C for a wide operating range. Optional Accessory Enclosure required for connection – For easy zero/cal. Aluminium Enclosure with Polymer coating as standard – ATEX Certified. Optional Accessories include spray deflector, flow adaptor & W/P caps. Comes with M20 (standard), 1/2″ NPT or 3/4″ NPT cable gland optional. Offering Calibration, Sensor & Component Spares, Replacement. Contact us for more information.