testo 316-EX - Gas Leak Detector

  • 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

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.

testo 0632 0336

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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.


  • testo 316-EX electronic gas leak detector with EX protection,
  • Batteries, 
  • Case, 
  • Allen key
  • Calibration protocol.
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)

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