Crowcon T4x portable gas detector

Crowcon T4x portable gas detector

Call for Price

£0.00 inc VAT

The Crowcon T4x portable gas detector is Crowcon’s zone 0 approved personal protection solution for detecting the four most common gas hazards:

  • Carbon Monoxide (CO)
  • Hydrogen Sulphide (H2S)
  • Flammable Gases (MPS)
  • Oxygen Depletion (O2)

Now available with improved detection of pentane, hexane, and other long-chain hydrocarbons; offering compliance and low cost of ownership in a simple, familiar to use solution. The large single button and intuitive menu allow the T4x to be operated whilst wearing gloves with minimal training required.

T4x compliance badges

The Crowcon T4x is by design a durable portable gas monitor, incorporating an integrated tough rubber boot as standard.

Drop tested to 4m and well protected from water ingress through IP65 and IP67 certification, the T4x allows uninterrupted working, even in the most demanding environments.

An optional clip-on filter cover helps prevent pollution, and can easily be removed and replaced as needed, ensuring sensors are protected, even in the dirtiest environments.

Achieve more with less 

The T4x gas detector eliminates poisoning and reduces the number of sensor replacements by 75% only 1 sensor needs replacing over the device’s lifespan.

“Detects more than 15 flammable gases at once straight out the box”

The Crowcon T4x is the only goto gas detector for all confined spaces involving oxygen, as it detects more than 15 flammable gases at once straight out the box, as well as oxygen, H2S and CO.

Enhanced battery life

With 35+ hours of battery life (double the battery life of our original T4) the T4x allows multiple or longer shifts to be worked between recharging.

Sensor types

MPS: Advances molecular property spectrometer (MPS™) sensor technology that detects and accurately identifies over 15 different flammable gases in one device.

Dual Toxic: Utilising a 3-year life dual toxic sensor (CO and H2S). You get the same performance of individual sensors in one package reducing costly replacements with tried and tested technology.

Long-life Oxygen: This long-life Oxygen sensor with a 5-year warranty and RoHS lead-free compliance saves you money and delivers on safety and environmental regulation.

For further information and expert advice call our team on 0845 3300 447

Gases and Ranges

Gases and Ranges




Long-Life Oxygen (O2) 0-30% Vol. 0.1% Vol.
Flammable (MPS) 0-100% LEL 1% LEL
Hydrogen sulphide (H2S) 0-100ppm 1ppm
Carbon monoxide (CO)0-1000ppm 1ppm



SizeW135 x H80 x D35 mm (5.3 x 3.1 x 1.4in)
Weight282g (9.9oz)
DurabilityDrop tested to 4m onto concrete
AlarmsAudible >95dB
Bright red/blue visual LEDs
Integrated vibrating alert
DisplayFront mounted, backlit. Optional 180° flip for easy viewing whilst worn
Logging130 hours of data logging; Up to 3500 events
BatteryRechargeable Li-ion
Up to 18-hour typical runtime (Standard sensor option)Up to 35 hours runtime (MPS and LLO2 options)
5.5 hour recharge
Operating temperature-20°C to +55°C (-4°F to +131°F)*
Humidity10 to 95% RH @ 40°C non-condensing
Ingress protectionIndependently tested to IP65 and IP67
ApprovalsATEX and UKCA II 1 G Ex ia IIC T4 Ga -20°C ≤ Ta ≤ +55°C (T4 Type 1)

II 2 G Ex db ia IIC T4 Gb Tamb -20°C to +55°C (T4 Type 2)

IECEx Ex ia IIC T4 Ga -20°C ≤ Ta ≤ +55°C (T4 Type 1) Ex db ia IIC
T4 Gb -20°C ≤ Ta ≤ +55°C (T4 Type 2)

UL USA Use in hazardous locations Class 1 Div 1 groups
A,B,C,D only as to intrinsic safety

MED Directive 2014/90/EU

InterfaceUSB communications lead
AccessoriesIncluded with T4:

Integrated alligator clip and tethering loop

Bump/Calibration plate

Available separately:
Single unit cradle charger, 10 unit cradle charger; Vehicle charger
Clip on filter plate for sensor protection in dusty environments
I-Test automated bump and calibration station

Crowcon Connect Compatible?Yes

* Toxic and oxygen sensors are not rated for continuous operation above 50°C (122°F)




Below is a small selection of the accessories available for the T4x.

Bump/Calibration plate

For applying test gas to T4x


External filter plate


Clip-on filter for additional protection in dusty environments. Protects the sensors from contamination.




Easy automated bump testing and calibration solution.


Cradle charger


Docking station for easy charging. Includes multi-region power supply.


10 way charger


Charge and store up to 10 units. Requires only a single power outlet.
*Not available for UL certified products.


Vehicle charger



Charge and store securely during transit.

*NEW* Portables Pro software

The newer version – is clean, easy and intuitive to use.
Service edition makes servicing T4x very easy.
Visit software downloads to download.


USB communications lead


For PC connection to T4x

USB communications lead CH0103

We are committed to offering the best products, at the very best rates on the market. If you can find a better offer, we will endeavor to not only match, but beat it!

To Find out more about our policy and to see how you would qualify for our price promise, click here.

Related Products

Get the latest news, discounts & more!

Price Promise