The Crowcon Xgard Bright is a versatile fixed-point gas detector with a local OLED display, covering flammable gases, toxic gases and oxygen in a flameproof (Ex d) enclosure of ADC 12 aluminium alloy or 316 stainless steel. It is an addressable detector: the 4-wire implementation and RS-485 Modbus RTU output cut cabling and installation cost, alongside a 3-wire 4-20mA output and alarm & fault relays fitted as standard, with HART 7 communications on the configurations that list it.
Zero, calibration and setup are non-intrusive — carried out from the display with a magnetic wand, without opening the housing. Sensor options include long-life MPS flammable (10+ years), infrared (10+ years) and long-life lead-free oxygen (5 years) sensors alongside catalytic and electrochemical sensors. Certification varies by configuration: most configurations listed here are ATEX builds, and only the configurations labelled UL in the dropdown are UL builds — check the certification stated on the configuration you select before ordering for a classified location.
How to read the configuration code: XGB = Xgard Bright; housing A1 = aluminium M20, A2 = aluminium 1/2" NPT, A3 = aluminium M20 (1/2" NPT), S1 = stainless steel M20, S2 = stainless steel 1/2" NPT; certification 01 = ATEX, 02 = UL; H = HART communications fitted, Z = no HART; R = alarm & fault relays fitted (standard on every configuration); the final code is the gas and range. Every configuration in the dropdown also names its housing, entry, certification, HART option, relays, gas and range in full — certification is stated per configuration: most configurations here are ATEX builds, and only the configurations labelled UL are UL builds.
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.
Versatile fixed-point platform for flammable and toxic gas detection and oxygen monitoring, with a local OLED display
Long-life sensor options — MPS (10+ years), infrared (10+ years) and long-life lead-free O2 (5 years) — reduce sensor replacement frequency and minimise operational expenses
4-wire addressable implementation minimises cabling requirements and lowers installation cost
Large OLED display: work through installation, calibration and routine maintenance without opening the housing
Non-intrusive calibration — zero, calibration, setup, tests and adjustments via the display and a magnetic wand, eliminating the need to open the housing and reducing hot-work permit requirements
Analogue 3-wire 4-20mA (sink or source) and RS-485 Modbus RTU outputs as standard; HART 7 communications on HART configurations
Alarm & fault relays fitted as standard on every configuration listed (Alarm 1, Alarm 2, Fault — SPDT contacts)
Flameproof (Ex d) enclosure in ADC 12 aluminium alloy or 316 stainless steel, IP65/66
Certification is per configuration — ATEX builds and UL builds are both listed, and each dropdown configuration states its own certification
Aluminium: ATEX/IECEx 156 x 166 x 109 mm (6.1 x 6.5 x 4.3 in), UL 162 x 166 x 110 mm (6.4 x 6.5 x 4.3 in); Stainless steel: ATEX/IECEx 165 x 166 x 105 mm (6.1 x 6.5 x 4.1 in), UL 162 x 166 x 103 mm (6.4 x 6.5 x 4.1 in)
Weight
Aluminium: ATEX/IECEx 1 kg (2.2 lbs), UL 1.5 kg (3.31 lbs); Stainless steel: ATEX/IECEx 3.1 kg (6.8 lbs), UL 3.5 kg (7.72 lbs)
Enclosure material
ADC 12 aluminium alloy or 316 stainless steel (per configuration)
Ingress protection
IP65/66, EN 60529
Cable entry
2 x M20 or 2 x 1/2" NPT (stopping plug fitted to the left-side entry) — per configuration
Operating voltage
10-30 V dc
Power
3 W max
Electrical output
3-wire 4-20mA (sink or source); RS-485 Modbus RTU; HART 7 (optional, on HART configurations only)
Relay output
Alarm 1, Alarm 2, Fault — SPDT contacts, rated 1A, 24 V dc (fitted on every configuration listed)
Sounder output
High side switch (24 V nominal, 12 V minimum, 700 mA maximum load)
Operating temperature
ATEX/IECEx: -40 to +70 °C (-40 to +158 °F); UL: -40 to +60 °C (-40 to +140 °F) — sensor ranges vary
Humidity
0 to 95% RH, non-condensing
Repeatability
±2% FSD; zero drift <±2% FSD per year
EMC compliance
EN 50270, EN IEC 61326-1, EN 55011, CISPR 11, EN 61000-4
Approvals (per configuration)
ATEX/IECEx builds: Ex db IIC T6 Gb (aluminium) / T3-T4 Gb (stainless steel), Ex tb IIIC T80°C Db, Zone 1 & 2 / 21 & 22. UL builds: UL 1203, Class I Division 1 Groups B, C, D T6; Class II Division 1 Groups E, F, G T6. Each configuration's certification is stated in its dropdown label.
Warranty
2 years on transmitter; 5 years on MPS flammable and O2 long-life sensors; 2 years on IR flammable sensors
Product Documents & Resources
Xgard Bright Fixed Gas Detector Datasheet (PDF)
Document files are being added to this page. Need one now? Email info@cpscalibrations.com and we'll send it straight over.
