Crowcon Xgard Fixed Gas Detector
The Crowcon Xgard is a fixed multi gas detector which meets the diverse requirements for gas detection in industries throughout the world.
The Crowcon Xgard is a fixed multi gas detector which meets the diverse requirements for gas detection in industries throughout the world. This includes many water treatment, oil and gas, power, research facility and manufacturing installations.
The Crowcon Xgard is also available as an Intrinsically Safe (I.S.) or Flameproof (Exd) version, with case options comprising high-grade alloy, stainless steel or chemically resistant GRN polymer. Certifications include IECEx, ATEX and UL.
Features
Low cost of ownership
Flexible installation options
Wide range of sensors
Rugged and reliable
| Xgard Type 1 | Xgard Type 2 | Xgard Type 3 | Xgard Type 4 | Xgard Type 5 | Xgard Type 6 | Xsafe |
| Toxic or Oxygen | Toxic or Oxygen | Flammable | Flammable | Flammable | % Volume
Gas Concentrations CO2, CH , He, Ar |
Flammable |
| Zone 0, 1 or 2, DIV 1 or 2 | Zone 1 or 2, DIV 1 or 2 | Zone 1 or 2, DIV 1 or 2 | Zone 1 or 2, DIV 1 or 2 | Zone 1 or 2, DIV 1 or 2 | Zone 1 or 2, DIV 1 or 2 | Safe Area |
| Intrinsically Safe electrochemical type detector with 2-wire 4-20mA output. Wide range of sensor options. A zener barrier or galvanic isolator is required for I.S. operation. | Flameproof electrochemical type detector with 2-wire 4-20mA output. | Flameproof catalytic bead type detector with 3-wire mV bridge output. | Flameproof high temperature (up to 150°C) catalytic bead type detector with mV bridge output. | Flameproof catalytic bead type detector with 3-wire 4-20mA output. | Flameproof thermal conductivity type detector with 3-wire 4-20mA output. | Non-certified low cost catalytic bead type detector with 3-wire 4-20mA or mV bridge output. |
| Gas | LTEL (ppm)
LEL (% Vol) |
STEL
UEL (% vol) |
Range available:
Type 1 |
Range available:
Type 2 |
Range available:
Type 3, 4, 5 & Xsafe |
Range available:
Type 6 |
| Acetylene (C2H2) | 2.3 | 100 | – | – | 0-100% LEL | – |
| Ammonia (NH3) | 25
15 |
35
33.6 |
50, 100, 250,
500, 1000 ppm |
– | 0-25% LEL | – |
| Argon (Ar) | – | – | – | – | – | Contact us |
| Arsine (AsH3) | 0.05 | – | 1 ppm | – | – | – |
| Bromine (Br2) | 0.1 | 0.2 | 3 ppm | – | – | – |
| Butane (C4H10) | 1.4 | 9.3 | – | – | 0-100% LEL | – |
| Carbon dioxide (CO2) | 5000 (0.5% Vol) | 5000 (1.5% Vol) | – | – | – | Contact us |
| Carbon monoxide (CO) | 30 | 200 | 50, 100, 200,
250, 500, 1000, 2000 ppm |
50, 100, 200,
250, 500, 1000, 2000 ppm |
– | – |
| Chlorine (Cl2) | – | 0.5 | 3, 5, 10, 20,
50, 100 ppm |
– | – | – |
| Chlorine Dioxide (ClO2) | 0.1 | 0.3 | 1 ppm | – | – | – |
| Diborane (B2H6) | 0.1 | – | 1 ppm | – | – | – |
| Ethane (C2H6) | 2.4 | 15.5 | – | – | 0-100% LEL | – |
| Ethylene (C2H4) | 2.3 | 36 | – | – | 0-100% LEL | – |
| Ethylene oxide (C2H4O) | 5 | – | 10, 50, 100 ppm | – | – | – |
| Fluorine (F2) | 1 | 1 | 1 ppm | – | – | – |
| Germane (GeH4) | 0.2 | 0.6 | 2 ppm | – | – | – |
| Helium (He) | – | – | – | – | – | Contact us |
| Hydrogen (H2) | 4 | 77 | 200, 2000 ppm | 200, 2000 ppm
100% LEL |
0- 100% LEL
50% LEL, 100% LEL |
0-5%, 10%, 50%
vv (in air) 0-20%, 25%, 30%, 50% vv (H2 in N2) |
| Hydrogen chloride (HCl) | 1 | 5 | 10, 25 ppm | – | – | – |
| Hydrogen cyanide (HCN) | – | 10 | 25 ppm | – | – | – |
| Hydrogen fluoride (HF) | 1.8 | 3 | 10 ppm | – | – | – |
| Hydrogen sulphide (H2S) | 5 | 10 | 5, 10, 20, 25, 50,
100, 200, 250, 300, 1000 ppm |
5, 10, 20, 25, 50,
100, 200 ppm |
– | – |
| LPG | 2 | 10 | – | – | 0- 100% LEL | – |
| Methane (CH4) | 4.4 | 17 | – | – | 0- 100% LEL | – |
| Nitric Oxide (NO) | 5 | 5 | 25, 50, 100 ppm | – | – | – |
| Nitrogen dioxide (NO2) | 1 | 1 | 10, 50, 100 ppm | – | – | – |
| Ozone (O3) | – | 0.2 | 1 ppm | – | – | – |
| Oxygen (O2) | – | – | 25% Vol | 25% Vol | – | – |
| Pentane (C5H12) | 1.1
600 ppm |
8.7
1800 ppm |
– | – | 0- 100% LEL | – |
| Petrol vapour | 1.4 | 6 | – | – | 0- 100% LEL | – |
| Phosgene (COCl2) | 0.02 | 0.06 | 1 ppm | – | – | – |
| Phosphine (PH3) | 0.1 | 0.2 | 1 ppm | – | – | – |
| Propane (C3H8) | 1.7 | 10.9 | – | – | 0- 100% LEL | – |
| Silane (SiH4) | 0.5 | 1 | 1 ppm | – | – | – |
| Sulphur Dioxide (SO2) | 1 | 1 | 10, 20, 50, 100,
250 ppm |
– | – | – |
| Vinyl chloride (VCM)
(CH2= CHCl) |
3.6
3 |
33
– |
– | – | 0- 100% LEL | – |
| Volatile organics (VO) | – | – | 0-100 ppm | – | – | – |
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