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)
- 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)
Accessories
C01339 Flow adaptor, for use in sampling applications
C011063 Sun shield. Protects against excessive heat build-up due to direct sunlight. Supplied with fixing rivets
C03005 Calibration adaptor
C01254 Carbon cloth filter (self-adhesive). Removes long-chain hydrocarbons
2575/1 Detector pulley system. Enables Xgard methane and hydrogen detectors to be lowered from a high level for calibration
00109A Calibration termination box (ABS box which allows gas to be applied to sensors remotely, a spray deflector or collector cone is also required)
M04214 PTFE tube 6 mm OD x 1 mm wall for use with calibration termination box
Spares
S011954 0-100% LEL methane plus general flammable gases. Supplied with bonded sensor retainer and Viton o-ring.
M04909 Sensor retainer O-ring. Viton.
M04910 Junction box lid O-ring. Viton.
S011720 Terminal support PCB
E07688 High-temperature terminal block.
