Xgard Bright



This flameproof (Exd) detector is housed within our high-grade aluminium alloy case. Certifications include gas and dust approvals for ATEX and IECEX with UL gas certification in progress.

Meet the next generation of flammable gas detection

The Xgard Bright is now available with MPS (Molecular Property Spectrometer™) technology

  • Sensor Poisoning is solved
  • Zero calibration for 5 years
  • TrueLEL™ multi-gas accuracy
  • Hydrogen ready


  • Flammable and toxic gas detection and oxygen monitoring – Reducing training requirements across sites
  • Choice of M20 or ½”NPT connection – Supports multiple site requirements
  • Low power requirement (~3W max) – Reducing site-wide power consumption
  • IP65 or IP66 rating (with weatherproof cap) – Allows use in areas subject to regular wash downs or in exposed environments

Ease of installation and operation:

  • Addressable – Drastically reduces the amount of cabling needed for multi-point installations
  • Local display – Delivers gas level indication, status and supports maintenance routines
  • Non-intrusive calibration – Removes the need to open the cover for calibration
  • Plug in type terminal blocks – Making wiring quick and easy reducing installation costs
  • Configuration via magnetic key – Reducing the amount of time operators spend in a hazardous area


Building on over 50 years of gas expertise, Crowcon is pioneering advanced molecular property spectrometer (MPS™) sensor technology that detects and accurately identifies 15 different flammable gases in one device

Find out more here



Size156 x 166 x 109mm (6.1 x 6.5 x 4.3inch)
Cable Entry2x M20 (stopping plug fitted to left-side entry)
Power10-30Vdc. 3W max
Electrical Output4-20mA current sink or source
RS-485 Modbus RTU
HART (Optional)
WeightAluminium alloy 1kg (2.2lbs)
Enclosure MaterialADC 12 aluminium alloy
RelayAlarm 1, Alarm 2, Fault

SPST contacts rated 1A 30Vdc

Sounder Out24Vdc (nominally), 250mA maximum load
Operating Temperature-40°C to +70°C (-40°F to 158°F)

Note: sensor operating temperatures vary widely.

Refer to the sensor module datasheet or contact

Crowcon for specific sensor data.

Humidity0 to 95% RH, non-condensing
Repeatability +/- 2% FSD
Zero drift+/- 2% FSD per year maximum
Ingress protectionIP65 (IP66 with weatherproof cap)
ApprovalsATEX and IECExEx II 2 G Ex db IIC T6 Gb

Ex tb IIIC T80ᶜ Db

II 2 G Ex db IIC T6 Gb

II 2 D Ex tb IIIC T80ᶜ Db

Certificate numbers:

TUV 16 ATEX 7908 X

IECEx TUR16.0035 X

EMC ComplianceEN50270: 2015
StandardsEN60079-0 :2012 + A11:2013
EN60079-1 :2014
IEC60079-0 :2011 Edition 6
IEC60079-1 :2014 Edition 7
ZonesCertified for use in Zone 1 and Zone 2 areas

Gases and Ranges

Alarm 1
Alarm 2
range °C 
MPS Flam%LEL1001002040-40 to +75
Oxygen (O2)%Vol302519 (falling)17 (falling)-20 to +50
Carbon Monoxide (CO)PPM100025030200-30 to +50
Hydrogen Sulphide (H2S)PPM100/20025510 -30 to +50
Hydrogen (H2)%LEL1001002040-40 to +75
Methane (CH4)%LEL1001002040-40 to +75
Pentane (C5H12)%LEL1001002040-40 to +75
LPG%LEL1001002040-40 to +75
Carbon Dioxide (CO2)%VOL0-5%0-5%0-2%0-3%-20 to +50
PID (VOC) – Safe AreaPPM100010003050-20 to +50
Infra Red Methane (CH4)%LEL1001002040-40 to +75
Infra Red Propane (C3H8)%LEL1001002040-40 to +75
Ammonia (NH3) – Safe AreaPPM100502525-20 to +40
Chlorine (CL2) – Safe AreaPPM10513-20 to +40
Ozone (O3) – Safe AreaPPM110.10.2-20 to +40
Sulphur Dioxide (SO2) – Safe AreaPPM1001011-30 to +50
Infra Red Butane (C4H10)%LEL1001002040-40 to +75
Infra Red Pentane (C5H12)%LEL1001002040-40 to +75
Infra Red LPG%LEL1001002040-20 to +55


Collector cone C01051

Aids detection of lighter than air gases such as hydrogen or methane. Includes a pipe spigot for application of bump test gas.

Spray deflector  C01052

For outdoor installations and sensor protection from water sprays.

Weatherproof cap  C01442

For use offshore or very wet environments

Flow adaptor C01339
For use in sampling applications
Sun shield C011063
Prevents against excessive heat build-up due to direct sunlight.
Calibration adaptor C03005
Enables application of calibration gas to the sensor.





Product Presentation

Additional information

Gas options

Ammonia (NH3), Carbon monoxide (CO), Chlorine (Cl2), Chlorine dioxide (ClO2), Hydrogen (H2), Methane (CH4), Oxygen (O2), Ozone (O3), VOCs (PID)