Crowcon TXgard Plus Gas Detector

Crowcon TXgard Plus Gas Detectors

Crowcon TXgard Plus Detector – call T&D Sales for price, delivery and stock.

Fixed Gas Detectors

Crowcon TXgard Plus | ATEX Zone 1 & Zone 2 Hazardous Areas 

Single Gas & Multi-gas Detectors | Fixed Point Gas Detection & Portable Gas Safety Applications | Industrial Locations & Hazardous Area Zones

The TXgard Plus fixed gas detector, manufactured by Crowcon, is ATEX certified for use in Zone 1 or 2 hazardous areas and also has UL certification.

Crowcon TXgard Plus gas detection equipment has a wide selection of sensors including a number of catalytic beads for a wide selection of flammable gases and vapours as well as electrochemical sensors for toxic gases and oxygen and a local LCD display.

TXgard Plus gas detectors are suitable for applications in chemical plants, oil and gas exploration, water treatment and steel production applications and has an ingress protection rating of IP65 as standard.

Crowcon TXgard Plus

Key Features

  • Robust Construction – Crowcon TXgard Plus is constructed using marine grade aluminium with a stainless steel sensor housing
  • Flexible Options – Available in 2 or 3 wire formats with a 40-20mA current sink or source. Relays for alarm and fault are optional
  • Low Ownership Costs – Sensors are long life with simple part replacement making the gas detector easy to operate and maintain
  • Calibration – The TXgard Plus can be calibrated with ease and boasts local display and buttons so the junction box doesn’t need to be opened. Non-intrusive one man calibration can be performed locally without the need for hot work permits
  • Range of Sensors – This gas detector can be tailored to meet the user’s needs with a choice of catalytic beads for a wide selection of flammable gases and vapours and an extensive range of electrochemical sensors for toxic gases and oxygen
Crowcon TXgard Plus Gas Detector

Crowcon TXgard Plus Gas Detector – flameproof toxic and oxygen gas detector with display

Crowcon TXgard Plus Bump Testing & Calibration

Routine bump testing is recommended for the range of Crowcon fixed gas detectors prior to each use. Bump testing is a brief application of a gas to the sensor to invoke a prescribed reaction, ensuring the gas detector reacts as expected.

Bump testing provides a quick, easy and direct method of verifying gas detectors are performing as required and takes a lot less time than ‘zeroing’ the device.

The bump test is widely accepted as a suitable method of testing gas detection equipment.

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.

Crowcon Gas Detectors

Crowcon TXgard Plus Fixed Gas Detector

Product Specifications

Should you require any further technical support and specification advice about the TXgard Gas Monitor manufactured by Crowcon please do not hesitate to contact us.

Size 200 x 115 x 115mm (7.9 x 6.1 x 6.1ins)
Weight 2.2kg (4.9lbs)
Enclosure material Junction box: Marine grade alloy Sensor housing: 316 stainless steel
Ingress Protection IP65
Cable entries 2 x M20 or 1/2” NPT
Power 10-30Vdc, 210mA max (relay version) 160mA max (non relay)
Operating temperatures -10o C to +55o C (14o F to 131o 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
Hazardous area zones Zone 1 or 2
Approvals Ex II 2 G Exd IIC T6 Gb UL Class I Zone 1
EMC compliance EN50270, FCC, ICES-003

Gas detection in confined spacesCrowcon TXgard Plus

Fixed Gas Detector Gases And Ranges Detected

Crowcon gas detection products provide reliable monitoring of levels of several gas hazard risks including toxic and flammable gases – should you require specific advice about selecting the correct fixed gas detection product for your application please contact us.

Gas Type LTEL (ppm) STEL (ppm) Crowcon TXgard Plus Range Available
Ammonia (NH3) 25 35
Carbon monoxide (CO) 30 200 100, 250, 500, 1000ppm
Chlorine (CL2) 0.5
Chlorine dioxide (CLO2) 0.1 0.3
Hydrogen (H2)
Hydrogen cyanide (HCN) 10 (MEL)
Hydrogen fluoride (HF) 1.8 3
Hydrogen sulphide (H2S) 5 10 15, 20, 25, 50, 100, 200ppm
Nitrogen dioxide (NO2) 1 1
Ozone (O3) 0.2
Oxygen (O2) 25%
Phosgene (COCl2) 0.02 0.06
Phosphine (PH3) 0.1 0.2
Sulphur Dioxide (SO2) 1 1


Hazardous Area ATEX Certified Gas Detector

Hazardous Area Classification

Crowcon TXgard Plus Gas Detector

Crowcon TXgard Plus Gas Detector

Ex II 2 G Exd IIC T6 Gb
UL Class I Zone 1

Visit hazardous area gas detectors for explosion and flameproof gas monitoring and detection instruments with certification for potentially explosive atmospheres, including Zone 1 and Zone 2 (according to ATEX and IECEx) and Class/Division categories (according to North American standards).

T&D provide competitive prices and delivery for all Crowcon Gas Detectors, including the Crowcon TXgard Plus.

Did you know? Crowcon fixed gas detectors protect plant; portable gas detectors protect people.


T&D Sales Team are Certificated by Crowcon to support the specification and supply of their flammable and toxic gas detectors. Additionally, T&D are CompEx Certificated and competent in understanding hazardous area classifications and site requirements for the sale of explosion and flameproof equipment.

Data Sheets