Single Gas & Multi-gas Detectors | Fixed Point Gas Detection & Portable Gas Safety Applications | Industrial Locations & Hazardous Area Zones
Single Gas & Multi-gas Detectors | Fixed Point Gas Detection & Portable Gas Safety Applications | Industrial Locations & Hazardous Area Zones
Crowcon Xgard | ATEX Zone 0, Zone 1 & Zone 2 Hazardous Areas
Crowcon Xgard is a versatile range of fixed gas detectors which meet gas detection specifications for a wide range of applications and industries worldwide. The Crowcon Xgard can be found in research facilities, water treatment, power, oil and gas and manufacturing facilities.
This range of gas detectors feature a number of sensors including electrochemical sensors for toxic gases and oxygen, poison resistant pellistors to detect flammable gases and thermal conductivity sensors to monitor the percentage volume of concentrations of gases.
The Crowcon Xgard gas detector has both intrinsically safe (Ex i) and flameproof (Ex d) options available; certifications include IECEx, ATEX, UL, GOST-R and MED.
A more cost effective version is the Crowcon XSafe which is suitable for use within non hazardous areas.
The diagram below illustrates how to determine which gas detector best suits the requirements of the end user.
Crowcon Xgard Bump Testing & Calibration
Routine bump testing is recommended for the range of Crowcon fixed gas detectors prior to each use. Bump testing is a brief application of a gas to the sensor to invoke a prescribed reaction, ensuring the gas detector reacts as expected.
Bump testing provides a quick, easy and direct method of verifying gas detectors are performing as required and takes a lot less time than ‘zeroing’ the device.
The bump test is widely accepted as a suitable method of testing gas detection equipment.
*Ranges not available for Xsafe or Xgard Type 4 -5 LTEK & STEL figures are derived from the UK HSE document: EH40 2011. Alternative thresholds may apply in countries outside the UK LEL figures derived from EN60079-20-1 : 2010 *1 Current limits advised in UK *2 Nominal 0-100ppm range with carbon monoxide (CO)
CROWCON xgard FIXED GAS DETECTOR HAZARDOUS AREA ATEX CERTIFIED GAS DETECTOR
Hazardous Area Classification
Type 1 Detector
ATEX: II 1G Ex ia IIC T4 Ga (Tamb -40 to +55° C)
UL/cUL: Class I, Div 1 Groups A, B, C, D
IECEx GOST-R
Type 2 Detector
ATEX: II 2GD Ex d IIC T6 Gb (Tamb -40 to +50° C)
UL: Class I, Div 1 Groups B, C, D
IECEx GOST-R
Type 3 Detector
ATEX: II 2GD Ex d IIC T4 Gb (Tamb -40 to +80º C) Ex d IIC T6 Gb (Tamb -40 to +50° C) Ex tb IIIC T180º C Db
UL: Class I, Div 1 Groups B, C, D
IECEx GOST-R
Type 4 Detector
ATEX: II 2 GD Ex d IIC T3 Gb (Tamb -40 to +150º C)
Type 5 & Type 6 Detector
ATEX: II 2 GD Ex d IIC T6 Gb (Tamp -40 to +50º C) Ex d IIC T4 Gb (Tamb -40 to +80º C) Ex tb IIIC T180º C Db
UL: Class I, Div 1 Groups B, C, D
IECEx GOST-R
Visit hazardous area gas detectors for explosion and flameproof gas monitoring and detection instruments with certification for potentially explosive atmospheres, including Zone 1 and Zone 2 (according to ATEX and IECEx) and Class/Division categories (according to North American standards).
| Category | Gas Detection |
|---|
| Type 1 | Type 2 | Type 3 | Type 4 | Type 5 | Type 6 | XSafe | |
| 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: 0.5Kg (1.1lbs), Alloy: 1kg (2.2Ibs), 316 S/S: 3.1kg (6.8 Ibs) | Aluminium: 1kg (2.2 Ibs), Stainless Steel: 3.1kg (6.8Ibs) | 1.5kg (3.3 Ibs) | Aluminium: 1kg (2.2 Ibs), Stainless Steel: 3.1kg (6.8Ibs) | 1kg (2.2Ibs) | ||
| Enclosure material | ATEX certified: Glass reinforced nylon or 316 S/S, UL Certified: Aluminium or 316 S/S | Aluminium or 316 Stainless Steel | Aluminium | Aluminium or 316 Stainless Steel | Aluminium | ||
| 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 types | Electrochemical | Catalytic bead | 316 S/S sensor housing with catalytic beads | Catalytic bead | Thermal conductivity | Catalytic bead | |
| Operating temperature | -40 to +50º C (-40 to 122º F) (Sensor dependant) | -20 to +50º C (-4 to 122º F) (Sensor dependant) | -40 to +80º C (-40 to 176º F) | -20 to +150º C (-4 to 302º F) | -40 to +55º C (-40 to 131º F) | +10 to +55º C (50 to 301º F) | mV: -40 to +80º C (-40 to 176º F); mA:-40 to +55º C (-40 to 131º F) N |
| Humidity | 15-90% RH non-condensing | 0-99% RH non-condensing | 0-90% RH | 0-99% RH | |||
| Repeatability Zero drift | <2% FSD (Typical) <2% FSD per Month (Typical) | ||||||
| Response time | T90 <15s Oxygen T90 <30s to 120s Toxic (sensor dependant) | T90 <15s (Typical) | |||||
| Operating voltage | 8- 30V dc | 2.0V dc +/- 0.1V (Typical) | 10-30V dc | mA: 10-30V dc; mV: 2.0Vdc | |||
| Power requirements | 24mA maximum | 300mA (Typical) | 50mA at 24V dc 1.2W | mA: 50mA at 24V dc 1.2W; mV: 300mA (typical) | |||
| Electrical output | 2-wire 4-20mA (current sink) | 3 wire mV bridge Typical signal: 12-15mV/ %LEL CH4 | 3 wire mV bridge Typical signal: > 10 mV/ %LEL CH4 | 3-wire 4-20mA (current sink or source) | mA: 3- wire 4-20mA (current sink or source) ; mV: 3- wire mV bridge; Typical Signal 12-15mV/ %LEL CH4 | ||
| Approvals | ATEX: II 1G Ex ia IIC T4 Ga (Tamb -40 to +55º C) UL/cUL: Class I, Div 1 Groups A, B, C, D IECEx GOST-R | ATEX: II 2GD Ex d IIC T6 Gb (Tamb -40 to +50º C) UL: Class I, Div 1 Groups B, C, D IECEx GOST-R | ATEX: II 2GD Ex d IIC T4 Gb (Tamb -40 to +80º C) Exd IIC T6 Gb (Tamb -40 to +50º C) Ex tb IIIC T180º C Db UL: Class I, Div 1 Groups B, C, D IECEx GOST-R | ATEX: II 2 GD Ex d IIC T3 Gb (Tamb -40 to +150º C) | ATEX: II 2 GD Ex d IIC T6 Gb (Tamp -40 to +50º C) Ex d IIC T4 Gb (Tamb -40 to +80º C) Ex tb IIIC T180º C Db UL: Class I, Div 1 Groups B, C, D IECEx GOST-R | Not certified for use in hazardous environment | |
| EMC compliance | EN 50270 FCC Part 15 ICES- 003 | ||||||
| LTEL (ppm) LEL (% Vol) | STEL (ppm) UEL (% Vol) | Range Available: Type 1 | Range Available: Type 2 | Ranges 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 |
| Arsine (AsH3) | 0.05 | – | – | – | – | – |
| Bromine (Br2) | 0.1 | 0.2 | 3 ppm | – | – | |
| Butane (C4H10) | 1.4 | 9.3 | – | – | – | – |
| Carbon dioxide (CO2) | 5000 (0.5% Vol) | 15000 (1.5% Vol) | – | – | – | Contact |
| 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 |
| 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 (HF) | 1.8 | 3 | 10ppm | – | – | – |
| 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*1 | 5*1 | 25, 50, 100 ppm | – | – | – |
| Nitrogen dioxide (NO2) | 1*1 | 1*1 | 10, 50, 100 ppm | – | – | – |
| Ozone (O3) | – | 0.2 | 1ppm | – | – | – |
| Oxygen (O2) | – | – | 25% Vol | 25% Vol | – | – |
| Pentane (C5H12) | 1.1, 600ppm | 8.7, 1800ppm | – | – | 0-100% LEL* | – |
| Petrol vapour | 1.4 | 6 | – | – | 0-100% LEL* | – |
| Phosgene (COCI2) | 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 | 1*1 | 10, 20, 50, 100, 250 ppm | – | – | – |
| Vinyl chloride (VCM) (CH2= CHCl) | 3.6, 3 | 33, – | – | – | 0-100% LEL* | – |
| Volatile organics (VO)*2 | – | – | 0- 100 ppm *2 | – | – | – |
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