Crowcon T4 Gas Detector with Charger


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> Gases - Oxygen (O2), Combustibles (LEL IR), Hydrogen Sulphide (H2S) and Carbon Monoxide (CO)

> Data Storage - 130 hours of data logging; Up to 3500 events

> Product Rating - IP65 & IP67 rating 

> Battery - Run Time (diffusion): 18-hour runtime for 4 sensors with the pump running. 5.5 hours recharge time

> Advanced Features - TWA Resume ensures toxic gas exposure is calculated accurately over an entire shift

Excl. VAT: £248.00 Incl. VAT: £297.60

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Excl. VAT: £248.00 Incl. VAT: £297.60

Product Description


The Crowcon T4 portable multigas detector provides effective protection against 4 common gas hazards: carbon monoxide, hydrogen sulphide, flammable gases and oxygen depletion. Now with improved detection of pentane, hexane and other long-chain hydrocarbons.

As a user of T4, it's good to know that it's Crowcon's toughest portable yet. The T4 is durable by design and includes an integrated rubber boot as standard. An optional clip-on filter cover, which is easily removed and replaced, ensures sensors are protected in the dirtiest environments. Drop tested to 4m and well protected from water ingress through IP65 and IP67 certification, T4 allows uninterrupted working in the most demanding environments.

TWA Resume

If you have a responsibility relating to health & safety, take note of this unique feature specific to the T4. The TWA Resume function ensures toxic gas exposure is calculated accurately over an entire shift, even if T4 is switched off for a break or during travel to another site.

When most portable detectors are turned off, the algorithm that assesses TWA exposure assumes that it’s the end of the shift. When turned on again, these detectors act as if it is a new work shift, ignoring all previous measurements. The TWA Resume function, however, provides the option to include previous measurements from within the correct time frame.

Positive Safety

When using the T4, Crowcon's +ve visual 'traffic light' indication, provides constant visual assurance that the T4 is operating soundly and conforms to site bump test & calibration policy. The bright green and red Positive Safety LEDs are visible to all and offer a quick, simple and comprehensive indication of monitor status to both the user and others around them.


With a battery life of 18 hours, T4 allows multiple or longer shifts to be worked between recharging which makes the T4 easier to maintain.


If you are purchasing the T4, consider the warranty. The T4 includes a 2-year warranty as standard. A 3-year warranty is available at an additional cost of £40 at point of order. 


T4 gas detector, quick start guide, bump/calibration cap, calibration certificate and declaration of conformity. The charger is included too all at a price of £311 Ex VAT.


T4 is complemented by a range of accessories including:

  • Multiple charging options
  • Portables Pro 2.0 software for accessing advanced T4 features and data logs
  • Clip on dust filter plates for extra sensor protection in dirtier environments 
  • I-Test which makes easy work of calibrating, bump testing and managing larger fleets of T4s

Hire T4 Gas Detector

For the measurement of CO, H2S, LEL and H2S in confined spaces, the Crowcon T4 provides rugged and reliable detection. With long battery life and 3 alarms to alert gas hazards, the T4 is an ideal detector for short or long term hire.


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