Description
The Crowcon TXgard-IS+ is an Intrinsically Safe (I.S.) Toxic and Oxygen gas detector, with a local LCD display. A wide range of sensors are available for use in a variety of applications. The TXgard-IS+ is ATEX certified for use in Zone 0,1 or 2 hazardous areas and also UL and cUL certified for use in Division 1 or 2 hazardous areas.
| Gas | LTEL (ppm) | STEL (ppm) | Range available |
| Ammonia (NH3) | 25 | 35 | 50, 100, 1000ppm |
| Carbon monoxide (CO) | 20 | 100 | 250, 500ppm |
| Chlorine (Cl2) | – | 0.5 | 5, 10, 20ppm |
| Chlorine dioxide (CLO2) | 0.1 | 0.3 | 1 ppm |
| Hydrogen (H2) | – | – | 2000ppm, 50% LEL, 100% LEL |
| Hydrogen cyanide (HCN) | 0.9 | 4.5(MEL) | 25ppm |
| Hydrogen fluoride (HF) | 1.8 | 3 | 10ppm |
| Hydrogen sulphide (H2S) | 5 | 10 | 25, 50, 100, 200ppm |
| Nitrogen dioxide (NO2) | 0.5 | 1 | 10ppm |
| Oxygen (O2) | 19.5% Vol. typical alarm | 23.5% typical alarm | 25% Vol. |
| Ozone (O3) | – | 0.2 | 1ppm |
| Phosgene (COCl2) | 0.02 | 0.06 | 1ppm |
| Phosphine (PH3) | 0.1 | 0.2 | 2ppm |
| Sulphur dioxide (SO2) | 0.5 | 1 | 10, 20, 30ppm |
Additional information
| Dimensions | 160 x 123 x 92mm (6.3 x 4.8 x 4.5ins) |
|---|---|
| Weight | 0.7kg (1.5lbs) |
| IP Rating | IP65 |
| Enclosure | Junction box: Carbon loaded nylon, Sensor housing: ABD Plastic |
| Power | 8-32Vdc, 4-20mA loop-powered |
| Cable Entry | 1 x M20 or 1/2” NPT with adaptor |
| Temperature Range | -20°C to +55°C (-4°F to 132°F |
| Relative Humidity | 15 to 90% RH non-condensing |
| Display | 2-Line, 16 character LCD |
| Calibration method | Via push-buttons |
| Electrical Output | 2 wire 4-20mA sink |
| Terminals | Suitable for up to 2.5mm2 cable |
| Sensor Type | Electrochemical |
| Repeatability | +/- 2% FSD typically |
| Zero drift | +/- 2% FSD, 6 months typically |
| Performance | Tested in accordance with EN60079-29-1 |
| Zones | Zone 0, 1 or 2, Division 1 or 2 (when connected via an isolation device) |
| Approvals | Ex II 1 G Ex ia IIC T4 (-40°C to +65°C), Exia IIC T4 Gb Tamb -20°C to +55°C, UL Class I, groups A, B, C and D |
| EMC compliance | EN 50270, FCC: CFR 47 Part 15, ICES-003 |
| Display Type | Fixed display |
| Material | Plastic |
| Gas Type | ammonia, 0-100 ppm (-20°C min), ammonia, 0-50ppm (-20°C min), Carbon Monoxide 0-250ppm, carbon monoxide, 0-500 ppm, chlorine, 0-10ppm, chlorine, 0-20ppm, Hydrogen Sulphide 0-200ppm, hydrogen sulphide, 0-100ppm, hydrogen sulphide, 0-25ppm, hydrogen sulphide, 0-50ppm, hydrogen, 0-100% LEL, Oxygen 0-25% VOL, sulphur dioxide, 0-10ppm, sulphur dioxide, 0-20ppm |
