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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 prioritise efficient order delivery and offer competitive shipping rates worldwide. Our streamlined process ensures clarity and reliability for all your shipping requirements.
- We handle consignments of various sizes across the UK and globally, primarily using DHL, but may select other couriers for specific needs.
- For online laboratory product purchases, shipping costs are displayed at checkout. For quoted items, shipping prices will be included in your email quote.
- Please visit our shipping and delivery page for more information here.
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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