Versatile toxic and oxygen gas detector with LCD display and non-intrusive calibration. Available for detecting a wide range of gases, the Crowcon TXgard-IS+ is Intrinsically Safe, ATEX and IECEx certified for use in Zone 0, 1 or 2 hazardous areas, and UL and cUL certified for use in Division 1 or 2 hazardous areas.
The TXgard-IS+ uses an electrochemical sensor within a re-usable bayonet housing. Supplied with carbon loaded nylon junction box, which contains the amplifier/transmitter to provide a 2-wire 4 to 20mA output (M20 cable gland entry). The LCD has a 2 x 16 character display with menu functions accessed via a keypad.
Features
Non-intrusive calibration
- Calibration can be performed locally without hot work permits and minimises operational downtime.
- Local display and buttons enable calibration without opening the junction box
Flexible output options
- 4-20mA current sink – works with a wide selection of control panels
- Two-wire format
Rugged and reliable
- Made from tough carbon loaded nylon
- Ingress protection to IP65 as standard
Low cost of ownership
- Non-intrusive one-person calibration – easy to operate and maintain
- Long-life sensors – keep interruption to on-site activity to a minimum
- Simple parts replacement
Wide range of sensors
- Extensive range of electrochemical sensors for toxic gases and oxygen
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 | Two-wire 4-20mA sink |
| Terminals | Suitable for up to 2.5mm2 cable |
| Sensor type | Electrochemical |
| Repeatability | +/- 2% FSD typically |
| Zero drift | +/- 2% FSD, six 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 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 |
