TXgard-IS+ Toxic and oxygen gas detector with display
General Details
TXgard-IS+ is a Intrinsically Safe (I.S.) toxic and oxygen gas detector with local LCD display. A very wide choice of sensors are available for use in a variety of applications.
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.
Features
Non-intrusive calibration
- Calibration can be performed locally without the need for hot work permits – minimises operational down-time
- Local display and buttons enable calibration without opening the junction box
Flexible output options
- 4-20mA current sink or source – works with a wide selection of control panels
- 2 or 3 wire formats
- Optional relays for alarm and fault – can be used for switching local alarms
Rugged and reliable
- Constructed using marine-grade aluminium with a stainless steel sensor housing – proven track record for operation in the harshest environments
- Made from tough carbon loaded nylon
- Ingress protection to IP65 as standard
Low cost of ownership
- Non-intrusive one man calibration – easy to operate and maintain
- Long life sensors – keeps interuption to on-site activity to a minimum
- Simple parts replacement
Wide range of sensors
- Choice of catalytic beads for a wide selection of flammable gases and vapours – gas detector tailored to your requirements
- Extensive range of electrochemical sensors for toxic gases and oxygen
Specification
| 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 |
* Figures shown exclude the sensors – Please contact Crowcon for a full list of sensor operating temperatures
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 |
| Sulpher dioxide (SO2) | 10, 20, 30ppm |