Whilst electronic leak detection sometimes gets a reputation for being somewhat finicky, in actual fact a leak detector can be a really useful diagnostic tool and can identify all the most common cooling agents and locate even the smallest leaks. This is why for many, an electronic leak detector is actually considered a piece of kit, as a refrigerant technician, you wouldn't be without.
Below is a great video eplanation from HVAC School (outlined to us from our friends over the pond at testo USA) which gives a fantastic example using a leak located inside the fins of a ductless evaporator coil, and how a leak detector, such as the testo 316-3 (as used in the video) can be used to an pinpoint the exact spot the leak is coming from. They then perform a definitive test to prove the effectiveness of the leak detector. This video provides a great example of how this type of instrument can be used to diagnose the location of the leak, both quickly and accurately.
You can see the full video below. Enjoy.
In addition to the above, HVAC school have also provided some really useful 'top tips' as best practice advice when using a leak detector, listed below:
If you’d like some further information on leak detection and refrigeration measurement, or you’ve got a requirement you’d like to discuss please feel free to contact us via www.testo.co.uk or +44 1420 544433 and we’ll be happy to help.