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Product Features
- Local display
- 4-20mA current sink
- Ingress protection to IP65 as standard
- Non-intrusive one-man calibration
Delivery options
At Cadmus Products we aim to deliver orders efficiently and at highly competitive rates.
- We can ship consignments of all shapes and sizes and hazardous content across the UK and worldwide. Most of our orders are sent via DHL, however sometimes we may use other couriers.
- If you are purchasing a laboratory product online you can find out the price of shipping checkout. If you are obtaining a quote for a product, then we will email you
with our best shipping prices along with your quote. - Please see our delivery page for full information
The Crowcon TXgard-IS+ is an intrinsically safe (I.S.) toxic and oxygen gas detector with a 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.
Non-intrusive calibration
Low cost of ownership
Wide range of sensors
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 – works with a wide selection of control panels
- 2 wire format
- 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 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
| 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 sink |
| 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 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 |
* 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 |
| Sulphur dioxide (SO2) | 10, 20, 30ppm |
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