Ammonia Leak Detector – Testo 316-4 Set 2

Model No: Testo 316-4 Set 2Part No: 0563 3165

The testo 316-4 set 2 with leak detector for ammonia (NH3) with case, mains unit and earphones – for fast, reliable leak location.

  • Extremely high sensitivity of ˂3g/a enables detection of even the smallest leaks
  • Visual and acoustic alarm for optimum leakage detection
  • Permanent sensor check, ensuring that your work is both safe and fast
  • Earplug connection for safe leakage detection in loud environments


Leaks on a refrigeration system have very serious consequences: the required cooling capacity is reduced and, in the worst case scenario, the system may suffer damage. This can cause environmental damage and result in unnecessary cost to your customer. This makes it all the more important for you to be able to detect even the smallest of leaks quickly and reliably – using the testo 316-4 leak detector, for example.

Advantages of the testo 316-4 set 2 leak detector

  • Ideal for ammonia: the testo 316-4 leak detector (set 2) is a fast, reliable leak detector for ammonia
  • Practical sensor technology: thanks to permanent sensor monitoring, malfunctions or contaminations are shown on the display. If dirty, the leak detector’s sensor can be easily cleaned and is then ready for use again straight away. Its flexible gooseneck means that it can be positioned close to the pipework or the measuring location
  • High sensitivity: with a very high sensitivity of ˂3g/a in accordance with EN 14624, the leak detector can detect even the smallest of leaks. Maximum leakages are indicated via the drag pointer function – making it easier to locate leaks
  • Reliable warning functions: an acoustic signal indicates that a leak has been detected. The display also changes from green to red. The earphones included in the set also enable the testo 316-4 leak detector to be used in loud environments

Technical Data

General technical data

Operating humidity

20 to 80 %RH


348 g

Reaction time

< 1 s


190 x 57 x 42 mm

Operating temperature

-20 to +50 °C

Product colour


Length of gooseneck

370 mm

Start-up time

< 50 s (0 … +50 °C); < 80 s (-20 … 0 °C)


R134a; R22; R404A; H₂ and all common refrigerants such as CFC, HCFC, HFC NH₃ (separate sensor head)


3 g/a

Leakage alarm

optical and audible alarm


EN 14624:2012

Alarm function

Optical; audible

Battery type

1 battery block (6 cells NiMh)

Battery life

6 h (Continuous operation)

Storage temperature

-25 to +70 °C



 Datasheet Download.  Instruction Manual Download

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