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Crowcon Xgard Type 3 | Flameproof Catalytic Flammable Gas Detector | Catalytic bead, mV bridge, -40 to +80 °C
Xgard Type 3 is a flameproof catalytic-bead detector for flammable gases, giving a 3-wire mV bridge signal of typically 12-15 mV per %LEL methane. It runs from 2.0 V dc at about 300 mA and operates from -40 to +80 °C. Poison-resistant pellistors cover hydrocarbons, hydrogen, ammonia, jet fuel and halogenated vapours.
Key features
- Poison-resistant catalytic pellistor
- 3-wire mV bridge output for mV-input controllers
- Dust rating Ex tb IIIC T180°C Db
- Aluminium or 316 stainless steel enclosure
- Spray deflector and weatherproof cap accessories
- Works from -40 to +80 °C at up to 99% RH non-condensing
- Specifications
- Downloads
| Part Number | Xgard Type 3 |
| Brand | Crowcon |
| Sensor type | Catalytic bead |
| Range | 0-100% LEL (gas dependent) |
| Size | 156 x 166 x 111 mm |
| Weight | Aluminium 1 kg; stainless steel 3.1 kg |
| Ingress protection | IP65 |
| Output | 3-wire mV bridge, 12-15 mV/%LEL CH4 typical |
| Supply | 2.0 V dc ±0.1 V, 300 mA typical |
| Operating temperature | -40 to +80 °C |
| Humidity | 0-99% RH non-condensing |
| Response time | T90 <15 s typical |
| Approvals | ATEX II 2 GD Exd IIC T4 Gb / T6 Gb; Ex tb IIIC T180°C Db; UL Class I Div 1 Groups B, C, D; IECEx |
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