Crowcon
Crowcon Xgard XG4 Fixed Flammable Gas Detector (High Temperature)
- SKU:
- CROWCON-XG4
- Availability:
- Usually ships in 3 business days
Description
The Crowcon Xgard Type 4 (XG4) is a flameproof (Ex d) fixed-point detector for flammable gases in high-temperature environments, rated for continuous operation up to +150 °C.
Its catalytic bead sensor is fitted in a 316 stainless steel sensor housing and connects to a gas detection control panel with a 3-wire mV bridge output. The configurations listed here measure methane at 0-100% LEL in aluminium junction boxes, in ATEX/IECEx or INMETRO builds exactly as stated in each configuration — Crowcon offers no UL/cUL build of the Type 4 in this range.
How to read the configuration code: each code spells out the build — XG type, then housing and cable entry (A = aluminium, S = 316 stainless steel; 1 = M20, 2 = 1/2" NPT, 4 = 3/4" NPT, 5 = 2× M20), certification (01 = ATEX/IECEx, 07 = INMETRO), then the gas code. Every configuration in the dropdown also names its housing, thread, gas and range in full.
Common Applications:
Oil & Gas • Petrochemical • Chemical Plants • Water & Wastewater • Steel • Power Generation • Marine & Offshore
Need help selecting the right configuration? Call CPS Calibrations at (865) 900-8844 — every configuration on this page is a factory Crowcon build, and we calibrate what we sell.
- Flameproof (Ex d) for Zone 1 or 2 areas
- High-temperature catalytic bead sensor in a 316 stainless steel sensor housing — continuous operation from -20 to +150 °C
- 3-wire mV bridge output for control-panel systems (typical signal >10 mV/%LEL CH4)
- Universal Xgard junction box — sensors and sinters are plug-in, so replacement takes minutes
- Wall or ceiling mounting with no additional brackets
- Many spare parts are common to all Xgard models, keeping spares holding to a minimum
- Junction boxes in polyester-coated aluminium (configurations listed here)
- Accessories available for duct mounting, sampling and remote gassing
- Spray deflectors and weatherproof caps available for washdown and offshore environments
| Gases & Ranges (listed configurations) | Methane: 0–100% LEL |
| Size | 195 x 166 x 111 mm (7.6 x 6.5 x 4.3 in) |
| Weight | Aluminium: 1 kg (2.2 lbs); 316 stainless steel: 3.1 kg (6.8 lbs) |
| Enclosure material | Aluminium or 316 stainless steel |
| Ingress protection | IP54 |
| Cable entries | 1 x M20, 1/2" NPT or 3/4" NPT on right-side |
| Terminations | 0.5 to 2.5 mm² (20 to 13 AWG) |
| Sensor type | Catalytic bead in 316 stainless steel sensor housing |
| Operating temperature | -20 to +150 °C (-4 to 302 °F) |
| Humidity | 0-99% RH non-condensing |
| Repeatability | <2% FSD (typical) |
| Zero drift | <2% FSD per month (typical) |
| Response time | T90 <15 s (typical) |
| Operating voltage | 2.0 V dc ±0.1 V (bridge) |
| Power | 300 mA (typical) |
| Electrical output | 3-wire mV bridge; typical signal >10 mV/%LEL CH4 |
| Approvals | ATEX: II 2 G Ex d IIC T3 (Tamb -20 to +150 °C); IECEx and INMETRO builds as stated in each configuration |
| EMC compliance | EN 50270 |
Product Documents & Resources
- Xgard XG4 Fixed Flammable Gas Detector (High Temperature) Datasheet (PDF)
Document files are being added to this page. Need one now? Email info@cpscalibrations.com and we'll send it straight over.