TXgard Plus – Flameproof toxic and oxygen gas detector with display
General Details
TXgard Plus is a flameproof (Ex d), ATEX and UL certified toxic or oxygen gas detector with local LCD display.
A choice of sensors are available enabling use in a wide range of applications, including water treatment, oil and gas exploration, chemical plants and steel production.
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 | 200 x 115 x 115mm (7.9 x 6.1 x 6.1ins) |
| Weight | 2.2kg (4.9lbs) |
| Ingress protection | IP65 |
| Enclosure material | Junction box: Marine grade alloy Sensor housing: 316 stainless steel |
| Power | 10-30Vdc, 210mA max (relay version) 160mA max (non relay) |
| Cable entries | 2 x M20 or 1/2” NPT |
| Operating temperature | -10°C to +55°C (-14°F to 131°F) * |
| Humidity | 15 to 90% RH non-condensing |
| Relays (optional) | SPNO or SPNC contacts rated 30Vdc 1A (non-inductive load) for Alarm 1, Alarm 2, Fault |
| Display | 3-digit LCD back-lit display, LED status indicator |
| Calibration method | Via magnetically operated buttons |
| Electrical output | 3 wire 4-20mA, sink or source |
| Terminals | Suitable for up to 1.5mm2 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 1 or 2 |
| Approvals | Ex II 2 G Exd IIC T6 Gb UL Class I Zone 1 |
| 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 |
| Carbon monoxide (CO) | 100, 250, 500, 1000ppm |
| Hydrogen sulphide (H2S) | 25, 50, 100, 200ppm |
| Oxygen (O2) | 25% vol. |