Testo 316-EX Gas Leak Detector with EX-protection - 0632 0336


0632 0336

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Proof of gas and leakage localization on gas pipes and installations in indoor and outdoor areas The testo 316-EX, which conforms to the guideline 94/9/ EG (ATEX), is a multi-range gas detector with Ex protection for the gases methane, propane and hydrogen. The gas concentrations are measured by the semi-conductor sensor in the ppm range and are shown in the display with a resolution of 1ppm.

When house owners notify the network operator or fitter that 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.


  • 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.

Overview Testo gas leak detectors
testo 317-2 testo 316-1 testo 316-2 testo gas detector testo 316-EX
  The convenient
gas leak detector
for beginners
The detector for
leaks in natural gas
The gas leak
detector with
integrated pump
for fast check
Gas detector Gas detector
Measuring range          
     Methane 100 to
20.000 ppm CH4
100 to
10,000 ppm CH4
10 ppm to 4,0
Vol. % CH4
10 to 999 ppm CH4
0,1 to 4,4 Vol. % CH4
1 ppm to
2.5 Vol. % CH4
     Propane 50 to 10.000 C3H8 - 10 ppm to 1,9
Vol. % C3H8
10 to 999 ppm C3H8
0,1 to 1,9 Vol. % C3H8
1 ppm to
1.0 Vol. % C3H8
     Hydrogen - - 10 ppm to 4,0
Vol. % H2
10 to 999 ppm H2
0,1 to 4,0 Vol. % H2
1 ppm to
2.0 Vol. % H2
Lower response
100 ppm CH4
50 C3H8
100 ppm 10 ppm 10 ppm -
1st alarm limit 10.000 ppm CH4
5000 C3H8
(20% LEL)
from 200 ppm CH4
(LED yellow)
200 ppm CH4
100 ppm C3H8
200 ppm H2
- -
2nd alarm limit - from 10.000 ppm CH4
(LED red)
10.000 ppm CH4
5.000 ppm C3H8
10.000 ppm H2
- -
Resolution  - - - 1 ppm / 0,1 Vol. % 1 ppm / 0,1 Vol. %
Display 8 segment trend
LED (3 colour) 18 segment bar
ppm display -
Battery life 4 h (LR03) > 5 h 6 h > 8 h to 10 h
Other features audible signal Semi-conductor
Earphone socket · extendable probe
· Inherently safe
sensor according to
Protection class
EU guideline
94/9/EG (ATEX)
EX-protection II 2G
EEx ib IIC T1 (Ex
Zone 1)


  • Testo 316-EX electronic gas leak detector with EX protection
  • Batteries
  • Case
  • Allen key
  • Calibration protocol


  Methane (CH₄) Propane (C₃H₈) Leak detection H₂
Measuring range 1 ppm to 2.5 Vol.% CH₄ 1 to 1.0 Vol.% C₃H₈ 1 ppm to 2.0 Vol.% H₂
Resolution 1 ppm / 0.1 Vol.% 1 ppm / 0.1 Vol.% 1 ppm / 0.1 Vol.%
Lower response threshold 1 ppm 1 ppm 1 ppm


General technical data
Operating humidity 20 to 80 %RH (not condensed)
Reaction time 14 s t₉₀
Operating temperature -10 to +40 °C
Storage temperature -10 to +50 °C
Protection class IP54
EU-/EG-guidelines 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)
Ex-protection II 2G EEx ib IIC T1 (Ex Zone 1)
Dimensions 135 x 45 x 25 mm
Weight Approx. 200 g


Buy with 100% confidence knowing your purchase is backed by the full Manufacturer's Warranty. Please register your product with provided warranty card.


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