Testo 316-4 Refrigerant Gas Leak Detector (High Sensitivity)

  • High sensitivity – detects leaks <3 g/a for precise results
  • Self-monitoring sensor – eliminates need for external test leaks
  • Flexible gooseneck – easily reach confined areas of pipework
  • Optical and audible alarms – clear indication of leaks in any environment
  • Quick-clean sensor – ready for reuse in minutes
  • Ammonia upgrade option – supports NH₃ systems with interchangeable sensor head
£558.00 £465.00

Availability: Usually 5 working days

Product Code
TES316-4

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Testo 316-4 Refrigerant Gas Leak Detector (High Sensitivity)

What is the Testo 316-4 Set 1 Leak Detector?

The Testo 316-4 Set 1 Leak Detector is a professional-grade instrument for UK HVAC engineers and refrigeration technicians who need fast, reliable refrigerant leak detection. Designed to meet EN 14624:2012 standards, it helps you find even the smallest leaks before they cause loss of cooling performance, equipment damage or costly environmental impact.

Built for daily field use, the 316-4 offers rapid response, a flexible gooseneck for hard-to-reach pipework and an intelligent sensor that monitors itself for contamination. It’s the ideal tool for ensuring leak-free installations and safe maintenance on air-conditioning, refrigeration and heat-pump systems.

 

How does the Testo 316-4 simplify leak detection for HVAC professionals?

With a reaction time under one second and sensitivity below 3 g/a, the 316-4 quickly locates even the tiniest refrigerant escape. The self-monitoring sensor removes the need for separate test leaks and when contamination occurs, it can be cleaned and reused immediately.

Visual and audible alarms make leak identification straightforward, even in noisy plant rooms. For systems using ammonia (NH₃), simply upgrade with the optional NH₃ sensor head or choose the Testo 316-4 Set 2 for full compatibility.

 

Order today to enjoy free delivery, expert support and our 90-day satisfaction guarantee. Need advice? Our team is here to assist you.

 

More Information
ManufacturerTesto
Manufacturer Part Number05633164
document Datasheet (319.09 kB)
  • Detectable gases: R134a; R22; R404A; H₂; CFC; HCFC; HFC; NH₃ (with separate sensor head)
  • Sensitivity: 3 g/a
  • Reaction time: < 1 s
  • Operating temperature: −20 to +50 °C
  • Operating humidity: 20 to 80 % RH
  • Gooseneck length: 370 mm
  • Battery type: 1 NiMH block (6 cells)
  • Battery life: 6 hours (continuous operation)
  • Start-up time: < 50 s
  • Dimensions: 190 × 57 × 42 mm
  • Weight: 348 g
  • Standards: EN 14624:2012
  • Alarm function: Optical and audible
  • Storage temperature: −25 to +70 °C
  • Colour: Black

Why choose Instrotech for your electrical test equipment?

With over 40 years’ experience supporting UK electricians, technicians and engineers, Instrotech is your trusted partner for quality tools and expert service. When you purchase from us, you benefit from:

  • Free UK shipping on all orders
  • Access to our knowledgeable technical support team
  • Available calibration services to maintain safety compliance
  • A 90-day money-back guarantee for complete peace of mind

We’re committed to helping you work safely and efficiently with industry-leading products and ongoing support.