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Crowcon Xgard

Crowcon Xgard Fixed Gas Detector

The Crowcon Xgard range offers a comprehensive selection of fixed point gas detectors that meet the diverse requirements gas detection in industries throughout the world. This includes many water treatment, oil and gas, power, research facility and manufacturing installations. Intrinsically Safe (I.S.) or Flameproof (Exd) versions are available for a wide range of applications. Xsafe is a cost effective solution for flammable gas detection in safe areas such as boiler rooms, kitchens and commercial buildings.

Xgard Sensors:

  • Poison resistant pellistors for flammable gas detection
  • Electrochemical sensors are used to detect toxic gases and oxygen
  • Thermal conductivity sensors to monitor volume concentrations of gases

Find out more on our sister site Cadmus Products.

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Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.

Xgard Types

  • Xgard Type 1: Intrinsically safe toxic and oxygen gas detector
  • Xgard Type 2: Flameproof toxic and oxygen gas detector
  • Xgard Type 3: Flameproof flammable gas detector
  • Xgard Type 4: Flameproof high temperature flammable gas detector
  • Xgard Type 5: Flameproof flammable gas detector with 4-20mA output
  • Xgard Type 6: Flameproof thermal conductivity type gas detector
  • Xsafe: Safe area flammable gas detector

 

Low cost of ownership

Xgard detectors are designed for easy installation and maintenance to keep costs down. The three junction box options are all designed to make replacement of sensors and sinters extremely simple.

Spare sensors simply plug-in.

Xgard Types 1 and 2 utilise oxygen sensors with a 2- year life-span, so sensor replacement costs are halved when compared to conventional oxygen detectors. Many spare parts are common to all Xgard models, which keeps spares holding requirements to a minimum.

Flexible installation options

Xgard is designed for either wall or ceiling mounting without the need for additional brackets. Xgard can accommodate M20, 1/2" NPT or 3/4" NPT cable glands to suit all site requirements.

High temperature models are available for hot environments (up to 150oC).

Accessories are available for duct mounting, and sampling applications as well as remote gassing for simple sensor checking.

Wide range of sensors

Xgard offers an extremely wide range of sensors for all applications.

Poison resistant pellistors, for all flammable detection needs including hydrocarbons, hydrogen, ammonia, jet fuel, leaded petrol and vapours containing halogens. Electrochemical sensors are used to detect a vast range of toxic gases and oxygen.

Thermal conductivity sensors are available to monitor volume concentrations of gases.

Rugged and reliable

Xgard is manufactured using a choice of three materials: glass reinforced nylon, highly durable aluminium with a tough polyester coating, or 316 stainless steel for ultimate corrosion resistance. All versions are designed to operate even in the harshest conditions.

Spray deflectors and weatherproof caps are available for use in areas subject to regular wash-downs, or offshore environments.

Specifications

Type 1 Type 2 Type 3 Type 4 Type 5 Type 6
Size 156 x 166 x 111mm (6.1 x 6.5 x 4.3 inches) 195 x 166 x 111mm (7.6 x 6.5 x 4.3 inches) 156 x 166 x 111mm (6.1 x 6.5 x 4.3 inches)
Weight Nylon: 0.5 kgAlloy: 1kg (2.2lbs)316 S/S: 3.1kg (6.8lbs) Aluminium: 1kg (2.2lbs)Stainless steel: 3.1kg (6.8lbs) 1.5 kg (3.3lbs) Aluminium: 1kg (2.2lbs) Stainless steel: 3.1kg (6.8lbs)
Enclosure material ATEX certified: Glass reinforced nylon or 316 S/SUL Certified: Aluminium or 316 S/S Aluminium or 316 Stainless Steel Aluminium Aluminium or 316 Stainless Steel
Ingress protection IP65 IP54 IP65
Cable entries 1 x M20, 1/2 “NPT or 3/4 NPT* on right-side
Terminations 0.5 to 2.5mm2
Sensor type Electrochemical Catalytic bead 316 S/S sensor housing with catalytic beads Catalytic bead Thermal conductivity
Operating temperature -40 to +50 °C
(-40 to 122 °F)
(sensor dependant)		 -20 to +50°C (-4 to 122°F) -40 to +80°C
(-40 to 176°F)		 -20 to +150°C (-4 to 302°F) -40 to +55°C (-40 to 131°F) +10 to +55°C (50 to 301°F)
Humidity 10 to 95% RH non-condensing 0-99% RH non-condensing 0-90% RH
Repeatability Zero drift <2% FSD (Typical)<2% FSD per Month (Typical)
Response time T90 <15s OxygenT90 <30s to 120s Toxic(sensor dependant) T90 <15s (Typical)
Operating voltage 8-30V dc 2.0V dc +/- 0.1V (Typical) 10-30V dc
Power requirements 24mA maximum 300mA (Typical) 50mA at 24V dc 1.2W
Electrical output 2- wire 4-20mA (current sink) 3- wire mV bridgeTypical signal: 12-15mV/ %LEL CH4 3- wire mV bridgeTypical signal: >10mV/%LEL CH4 3- wire 4-20mA (current sink or source)
Approvals ATEX: II 1 G
Exia IIC T4 Ga
(Tamb -40 to +55°C)
UL/cUL: Class I, Div. 1
Groups A, B, C, D
IECEx
EAC		 ATEX: II 2GD
Exd IIC T6 Gb (Tamb -40 to +50°C)
UL: Class I, Div. 1
Groups B, C, D
IECEx
EAC		 ATEX: II 2 GD
Exd IIC T4 Gb
(Tamb -40 to +80°C)
Exd IIC T6 Gb (Tamb -40 to +50°C)
Ex tb IIIC
T180°C Db
UL: Class I, Div. 1
Groups B, C, D
IECEx
EAC		 ATEX: II 2 GDExd IIC T3 Gb (Tamb -40 to +150°C) ATEX: II 2 GDExd IIC T6 Gb (Tamb -40 to +50°C)
Exd IIC T4 Gb (Tamb -40 to +80°C)
Ex tb IIIC
T180°C Db
UL: Class I, Div. 1
Groups B, C, D
IECEx
EAC
EMC compliance EN 50270       FCC Part 15    ICES- 003

*3/4 ” cable entry only available on aluminium juntion boxes.