Crowcon Xgard Type 4 Fixed Gas Detector
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).
Xgard Type 4 Detectors
| Part Number |
Description |
| XG4-A2-01-FD |
Xgard Type 4 Aluminium, 1/2" NPT, ATEX/IECEx, Methane (CH₄), 0-100% LEL |
| XG4-A4-01-FD |
Xgard Type 4 Aluminium, 3/4" NPT, ATEX/IECEx, Methane (CH₄), 0-100% LEL |
| XG4-A1-01-FD |
Xgard Type 4 Aluminium, M20, ATEX/IECEx, Methane (CH₄), 0-100% LEL |
Xgard Type 4 Spares
| Part Number |
Description |
| S011954 |
0-100% LEL Methane Sensor for General Flammable Gases, supplied with bonded sensor retainer and Viton O-ring |
General Spares
| Part Number |
Description |
| M04909 |
Sensor Retainer O-ring (Viton) |
| M04910 |
Junction Box Lid O-ring (Viton) |
| S011720 |
Terminal Support PCB |
| E07688 |
High Temperature Terminal Block |
Xgard Accessories
| Part Number |
Description |
| C011061 |
Accessory Adaptor (Spare) – M20 Threaded Adaptor for Connecting Accessories |
| C01051 |
Collector Cone with Adaptor – Aids Detection of Light Gases such as Methane |
| C01052 |
Spray Deflector with Adaptor – Protection for Outdoor Installations and Water Sprays |
| C01442 |
Weatherproof Cap with Adaptor – Suitable for Offshore and Wet Environments |
| C01339 |
Flow Adaptor for Sampling Applications |
| C011063 |
Sun Shield – Protects Against Excessive Heat Build-up from Direct Sunlight |
| C03005 |
Calibration Adaptor |
| C01254 |
Carbon Cloth Filter (Self-Adhesive) for Xgard Types 3, 4 and 5 – Removes Long Chain Hydrocarbons |
| S011918 |
Duct Mounting Kit – Stainless Steel Plate with 6mm Remote Calibration Fitting, Maximum Duct Airflow 6m/s |
| 2575/2 |
Detector Pulley System for Lowering High-Level Methane and Hydrogen Detectors for Calibration |
| 00109A |
Calibration Termination Box for Remote Gas Application to Detectors |
| M04214 |
PTFE Tube, 6mm OD × 1mm Wall, for Use with Calibration Termination Box (Per Metre) |
