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testo 316-3 refrigerant leak detector for cooling agents, sensor head, carry case, calibration certificate, batteries, filter.

Refrigerant leak detector - testo 316-3
Model No: testo 316-3 Part No: 0563 3163

The handheld leak detector testo 316-3 can detect all the most common cooling agents along with even the smallest leaks. It also comes with an automatic zero setting that also enables you to locate leaks in contaminated rooms.

  1. High sensitivity < 4 g/a allows the detection of the smallest leaks
  2. Detects all common refrigerants
  3. Easiest possible operation thanks to a single button
  4. Immediate readiness with no pre-settings
  5. LED indicator of leakage with simultaneous audible alarm


General technical data
Operating humidity 20 to 80 %RH
Weight 500 g (incl. batteries)
Dimensions 270 x 60 x 61 mm
Operating temperature -18 to +50 °C
Product colour Black
Detectable R22; R134a; R404A; R410A; R507; R438A; and all CFCs, HFCs, and HCFCs
Sensitivity 4 g/a (0.15 oz/a)
Life-time sensor Approx. 80 to 100 h (corresponds to approx. 1 year)
Standards EN 14624:2012; SAE J1627
EU-/EG-guidelines 2004/108/EG
Battery type 2 x D
Battery life 16h permanent operation
Storage temperature 0 to +50 °C

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testo 316-4 leak detector including refrigerant sensor head, case, mains unit and earphones.

Leak detector - testo 316-4
Model No: testo 316-4 Part No: 0563 3164

Testo 316-4 leak detector aids in carrying out quick, reliable leakage detection on refrigeration systems or heat pumps.

  1. Very high sensitivity of < 3g/a allows the detection of the smallest leaks
  2. Very long sensor life
  3. Optical and audible alarm for optimum leakage detection
  4. Permanent sensor check for fast and safe work
  5. Earphone connection for secure leakage detection in loud surroundings
  6. Trend display shows maximum leakages


General technical data
Operating humidity 20 to 80 %RH
Reaction time < 1 s
Dimensions 190 x 57 x 42 mm
Operating temperature -20 to +50 °C
Product colour Black
Length of gooseneck 370 mm
Start-up time <50 sec (0 ... +50 °C); <80 sec (-20 ... 0 °C)
Detectable R134a; R22; R404A; H₂ and all common refrigerants such as CFC, HCFC, HFC NH₃ (separate sensor head)
Sensitivity 3 g/a
Leakage alarm optical and audible alarm
Standards EN 14624:2012
Alarm function Optical; audible
Storage temperature -25 to +70 °C
Weight 348 g
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