The Crowcon Xgard Type 4 is an Exd Flameproof flammable gas detector using a poison-resistant pellistor within a 316 stainless steel housing attached to an Xgard enclosure (aluminium) also contains the terminals to provide a three-wire mV Wheatstone Bridge output. Can be connected directly to Crowcon Gasmaster and Gasmonitor; an Accessory Enclosure accessory is required for connection to 4-20mA type control systems such as Vortex.

Suitable for use with a range of cable glands: M20 or 1/2″ NPT or 3/4″ NPT. Units can be installed on walls or ceilings, with three junction box choices—replacement sensors plugin. Accessories are available for duct mounting, sampling applications and remote gassing – simple sensor checking. Splash guards and weatherproof caps are available for wash-down areas or marine applications.

Features

• Simple installation and maintenance, common spares for all Xgard types, minimise inventory.
• Validated to IEC 61508 (SIL 1 to SIL 3).Crowcon Xgard
• Ingress protection IP54.
• Operating temperature -20 to +150°C.
• Response time T90 <15s (typical).
• Approvals ATEX: II 2 GDExd IIC T3 Gb (Tamb -40 to +150°C).
• Size 195 x 166 x 111 mm (7.6 x 6.5 x 4.3 inches).
• Weight: Aluminium 1.5kg (3.3 lbs).