An addressable fixed point gas detector with OLED display, non-intrusive magnetic wand calibration, long-life sensor options up to 10+ years, and UL Class I Division 1 certification — covering flammable, toxic, O2, and CO2 detection across a broad gas library with Modbus, HART, and relay outputs.
The Crowcon Xgard Bright is an addressable fixed point gas detector designed for facilities that demand high reliability, low maintenance cost, and easy integration into multi-point detection networks. Its 4-wire addressable Modbus RS-485 architecture minimizes cabling versus traditional point-to-point wiring, reducing installation cost on large facilities with many detection points. The large OLED display provides clear gas readings and full setup and diagnostic menus directly on the detector without opening the housing — and all calibration, zeroing, and adjustment functions are performed non-intrusively via magnetic wand, eliminating the need for hot work permits during routine maintenance. Long-life sensor options — MPS flammable (10+ years), O2 Long-Life (5 years), and IR (10+ years) — dramatically reduce sensor replacement frequency and lifecycle operating costs compared to standard electrochemical and catalytic sensors. Available in ADC12 aluminium or 316 stainless steel enclosures, with UL Class I Division 1 North American certification and ATEX/IECEx global certifications, the Xgard Bright is a proven, versatile platform for fixed gas detection in Alberta oilfield facilities, processing plants, compressor stations, and any application where long-term reliability and low total cost of ownership are the priority.
Key Features and Benefits
- 4-wire addressable Modbus RS-485 network — minimizes cabling and installation costs on multi-point systems
- Non-intrusive calibration via magnetic wand — no housing entry, no hot work permit required for routine maintenance
- Long-life sensor options: MPS flammable 10+ years, O2 Long-Life 5 years, IR 10+ years — industry-lowest sensor replacement frequency
- OLED display — high-contrast gas readings and full setup/diagnostic menus in any lighting condition
- Standard 4-20mA (sink or source) and RS-485 Modbus RTU; optional HART 7
- Optional relay output: Alarm 1, Alarm 2, Fault — SPDT (1A, 24Vdc)
- Built-in sounder output — 24V high-side switch for external sounder integration
- UL Class I, Division 1, Groups B, C, D certified — North American hazardous area ready
- ATEX/IECEx Zone 1 and Zone 2 certified — global deployment capable
- Available in aluminum (lightweight) or 316 stainless steel (corrosion-resistant) enclosures
- IP65/66 rated — suitable for outdoor and wash-down environments
- Operating temperature -40°C to +70°C (ATEX/IECEx); -40°C to +60°C (UL) — Alberta winter ready
- Repeatability ±2% FSD; zero drift <±2% FSD/year
- Broad gas library: flammable (MPS, catalytic, IR), H₂S, CO, O2, CO2 — one platform for multi-hazard facilities
- 5-year warranty on MPS flammable and O2 Long-Life sensors; 2-year transmitter warranty
Technical Specifications
| Enclosure Material | ADC12 aluminum alloy or 316 stainless steel |
Dimensions | Aluminium ATEX/IECEx: 156 x 166 x 109mm; UL: 162 x 166 x 110mm |
| Dimensions | Stainless ATEX/IECEx: 165 x 166 x 105mm; UL: 162 x 166 x 103mm |
| Weight | Aluminium: 1kg (ATEX/IECEx) / 1.5kg (UL); stainless: 3.1kg (ATEX/IECEx) / 3.5kg (UL) |
| Ingress Protection | IP65/66 |
| Cable Entry | 2x M20 or 2x ½" NPT |
| Operating Voltage | 10–30V DC; 3W max |
| Electrical Output | 3-wire 4-20mA (sink/source); RS-485 Modbus RTU; HART 7 (optional) |
| Relay Output | Alarm 1, Alarm 2, Fault — SPDT 1A @ 24Vdc |
| Operating Temperature | -40°C to +70°C (ATEX/IECEx); -40°C to +60°C (UL) |
| Humidity | 0–95% RH non-condensing |
| Repeatibility | ±2% FSD; zero drift <±2% FSD/year |
Safety and Compliance Certifications
| UL | UL 1203; Class I, Division 1, Groups B, C, D — T6; Class II, Division 1, Groups E, F, G — T6 |
ATEX | EN IEC 60079-0/1/31; Ex II 2G Ex db IIC T6 Gb (aluminium); Ex II 2G Ex db IIC T3/T4 Gb (stainless) |
| IECEx | IEC 60079-0/1/31 — Zone 1 and Zone 2 |
| Additional | CE, INMETRO, ECAS, PESO, CNEx, UC, CCS TA, MED |
| Performance | UL 60079-29-1 (pending) |
| EMC | EN 50270, EN IEC 61326-1, EN 55011, CISPR 11, EN 61000-4 |
Installation and Operating Requirements
10–30V DC power supply; 2x M20 or ½" NPT cable entries; 4-20mA control system input or RS-485 Modbus addressable network; magnetic wand for non-intrusive calibration; optional HART 7 communicator; relay wiring for external alarm or sounder; sensor selection per target gas and application.
MPS sensor 10+ year life and O2 Long-Life 5-year sensor life reduce sensor replacement frequency to a fraction of standard catalytic and electrochemical alternatives — on a 20-point facility, the difference between 2-year and 10-year sensor replacement cycles represents substantial labour and parts savings over a typical facility lifecycle. Non-intrusive magnetic wand calibration eliminates hot work permit requirements for routine calibration visits — on operating facilities where hot work permitting costs time and money, this alone can materially reduce annual maintenance expenditure. 4-wire addressable Modbus networking reduces cable runs versus traditional 3-wire point-to-point installations, lowering installation cost on new-build and retrofit projects.
For further information on our comprehensive range of products and services please get in touch with us by visiting our contact page.