The TXgard-IS+ is an Intrinsically Safe (I.S.) series of explosion-level gas probes that detect toxic gas and oxygen concentrations, which have an LCD display in place. This type of newspaper can optionally select a variety of in-mounted sensors suitable for a variety of applications. TXgard-IS+ is certified by ATEX to be suitable for Zone 0, 1 or 2 for explosion rooms, and UL and cUL are certified in accordance with Division 1 or 2.
CROWCON TXGARD-IS GAS PROBE FEATURES:
Easy calibration, no machine opening required
- Calibration can be done on site easily, without the need for complex training
- On-site monitors and push buttons for simple calibration, no device mounting required
Variety of signals out:
- Analog 4~20mA series power signal
- It is possible to emast the signal out to check the device.
Sustainability and stability
- Grp plastic shell structure is fireproof, neat, stable
- IP65 Waterproof Supply
- Accurate, stable electrolysizing sensor
TECHNICAL SPECIFICATIONS
| Size | 160 x 123 x 92mm / (6.3 x 4.8 x 4.5ins) |
| Weight | 0.7kg (1.5lbs) |
| Ingress protection | IP65 |
| Enclosure material | Junction box: Carbon loaded nylon / Sensor housing: ABD Plastic |
| Power | 8-32Vdc, 4-20mA loop-powered |
| Cable entries | 1 x M20 or 1/2″ NPT with adaptor |
| Operating temperature | -20°C to +55°C (-4°F to 132°F) * |
| Humidity | 15 to 90% RH non-condensing |
| Display | 2-Line, 16 character LCD |
| Calibration method | Via push-buttons |
| Electrical output | 2 wire 4-20mA |
| Terminals | Suitable for up to 2.5mm2 cable |
| Sensor type | Electrochemical |
| Repeatability | +/- 2% FSD typically |
| Zero drift | +/- 2% FSD, 6 months typically |
| Response time | Contact Crowcon for a full list of sensor response times |
| Performance | Tested in accordance with EN60079-29-1 |
| Hazardous area zones | Zone 0, 1 or 2 / Division 1 or 2 / when connected via an isolation device) |
| Approvals | Ex II 1 G / Exia IIC T4 Ga / UL Class I, groups A, B, C and D |
| EMC compliance | EN 50270, FCC, ICES-003 |
GASES AND RANGES
| Gas | Range Available |
| Ammonia (NH3) | 50, 100, 1000ppm |
| Chlorine (Cl2) | 5, 10, 20ppm |
| Carbon monoxide (CO) | 250, 500ppm |
| Chlorine dioxide (ClO2) | 1ppm |
| Hydrogen (H2) | 2000ppm, 50% LEL, 100% LEL |
| Hydrogen cyanide (HCN) | 25ppm |
| Hydrogen sulphide (H2S) | 25, 50, 100, 200ppm |
| Hydrogen fluoride (HF) | 10ppm |
| Nitrogen dioxide (NO2) | 10ppm |
| Oxygen (O2) | 25% vol. |
| Ozone (O3) | 1ppm |
| Phosgene (COCl2) | 1ppm |
| Phosphine (PH3) | 2ppm |
| Sulphur dioxide (SO2) | 10, 20, 30ppm |
Crowcon TXgard-IS gas forecast can optionally detect gases
- Ammonia Gas Forecast (NH3)
- Chlorine Gas Forecast (Cl2)
- Carbon monoxide (CO) detector
- Chlorine dioxide Gas Forecast (ClO2)
- Hydrogen Gas Forecast (H2)
- Hydrogen cyanide Gas Forecast (HCN)
- Hydrogen sulphide gas forecast (H2S)
- Hydrogen fluoride Gas Forecast (HF)
- Nitrogen dioxide Gas Forecast (NO2)
- Oxygen Gas Forecast (O2)
- Ozone Gas Detector (O3)
- Phosgene Gas Forecast (COCl2)
- Phosphine Gas Forecast (PH3)
- Sulphur dioxide Gas Forecast (SO2)
Actual images:
Installation and correction of Crowcon Txgard IS+ 
Installation and correction of Crowcon Txgard IS+
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