The Crowcon T4 in Numbers

by | Mar 10, 2020 | Gas Detection, Personal Safety

What is the Crowcon T4?

The Crowcon T4 is one of the most widely recognised gas detectors in Europe which displays and detects the standard four gases simultaneously. The T4 is rated to IP67 making it a suitable gas detector used in a range of industries for entry into hazardous areas and confined spaces.

Why Choose the T4?


In addition to the front-mounted, backlit display, there’s an optional 180° flip for easy viewing whilst being worn.


Crowcon’s toughest portable yet, T4 is durable by design and includes an integrated rubber boot as standard. The T4 has been drop tested to 4m onto concrete.

Positive Safety

Crowcon’s visual ‘2 traffic light’ indication, provides constant visual assurance that 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.

TWA Resume – Over a typical 8 hour working day

Unique to 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 personal 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.

Battery Life

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

A Great Sales and Calibration Price

a1-cbiss are now offering the Crowcon T4 for just £310 which includes a charger. And because the gas detectors are in stock, a1-cbiss can deliver these for the next working day*.

Gas detection manufacturers recommend calibrating gas detectors and monitors every 6 months. Calibration of your personal gas detectors not only ensures your units are fully functioning but that you are complying with important legislation and Health & Safety regulations. Crowcon T4 calibration available from £25 per detector

* UK mainland delivery. Orders must be placed before 2pm to qualify

Buy Online or Make an Enquiry