Please email / call for availability
Get a quote
Enter your details and we will get back to you as soon as possible.

Product Features
  • ATEX approval (94/9/EC)
  • ppm and vol.% display
  • Flexible probe for inaccessible areas
  • 3 different types of gas can be detected: methane, propane and hydrogen
Delivery options

At Cadmus Products we aim to deliver orders efficiently and at highly competitive rates. 

  • We can ship consignments of all shapes and sizes and hazardous content across the UK and worldwide. Most of our orders are sent via DHL, however sometimes we may use other couriers.
  • If you are purchasing a laboratory product online you can find out the price of shipping checkout. If you are obtaining a quote for a product, then we will email you
    with our best shipping prices along with your quote.
  • Please see our delivery page for full information
The testo 316-EX gas leak detector helps you to detect gas leaks and ATEX protection means it can also be used in potentially explosive atmospheres. Gas verification and gas leak location can be carried out on gas pipes and installations both indoors and outdoors. When house owners notify the network operator or fitter hat they can clearly smell gas in the house, a highly explosive gas concentration may already be present (4-17%). The fitter has to use a gas detector with ATEX protection for the basic checking of sections of gas pipes for leaktightness or to locate the leak. Because you have to be sure in a hazardous situation that the gas measuring technology being used does not cause an explosion through its own potential ignition sources.

The testo 316-EX gas leak detector offers this ATEX protection (ATEX approval 94/9/EC). Use the multi-range gas detector to detect methane, propane and hydrogen gases. The gas concentrations are measured in the ppm range with a semiconductor sensor and are shown on the display with a resolution of 1 ppm. Flexible measuring probes mean you can search for leaks even in inaccessible areas.
Methane (CH₄)

Measuring range

1 ppm to 2.5 Vol.% CH₄


1 ppm / 0.1 Vol.%

Lower response threshold

1 ppm

Propane (C₃H₈)

Measuring range

1 to 1.0 Vol.% C₃H₈


1 ppm / 0.1 Vol.%

Lower response threshold

1 ppm

Leak detection H₂

Measuring range

1 ppm to 2.0 Vol.% H₂


1 ppm / 0.1 Vol.%

Lower response threshold

1 ppm

General technical data

Operating humidity

20 to 80 %RH (not condensed)

Reaction time

14 s t₉₀


135 x 45 x 25 mm

Operating temperature

-10 to +40 °C

Protection class



94/9/EG (ATEX); EU-guideline 2014/30/EU

Battery type

2 AA mignon batteries

Battery life

to 10 h

Battery feature

Type permitted for use in areas with danger of explosion: Camelion Plus Alkaline LR6 (see order data, order no. 0515 0316)

Storage temperature

-10 to +50 °C


Approx. 200 g


II 2G EEx ib IIC T1 (Ex Zone 1)

Write Your Own Review
You're reviewing:testo 316-EX Gas Leak Detector
Your Rating

Sign up for our latest offers

By submitting your details you consent to their use in accordance with our Privacy Notice