Vacuum gauges and solutions
Evacuations are an important part of the commissioning and maintenance of heat pumps and air conditioning and refrigeration systems. With our innovative vacuum pump and smart measuring devices, evacuations are fully automated generating high-precision results.
All about vacuum
The new vacuum solutions from Testo aren’t just technically brilliant, but are also practical to use. After all, high-precision readings are one thing, but a smooth work process is another. We therefore offer:
Fully automated evacuations with integrated holding test
All the values that you want to know for the safe evacuation of heat pumps and refrigeration systems. Highly precise
Full remote control - with the testo Smart App
Wireless connectivity between instruments thanks to automatic Bluetooth connection
Vacuum measurement – what it's all about
When commissioning heat pumps, air conditioning and refrigeration systems, vacuum gauges are used, always in conjunction with a vacuum pump that creates the vacuum in the system. In this respect, your vacuum gauge should always meet the following requirements:
Pressure sensor with a high level of accuracy in the lower measuring range (e.g. a Pirani probe).
Wireless monitoring of absolute pressure.
Measurement of the evaporation temperature of H₂O.
Optical alarm when a limit value is exceeded.
When comparing the accuracy data specified for different instruments, you should make sure that they are not "only valid under laboratory conditions". What counts for you is the performance your vacuum gauge achieves in real use. On the other hand, you can always rely on Testo's accuracy data!
Classic gauge or manifold?
Evacuate systems safely: Here you will find your ideal measuring device for vacuum.
Relaxed measurement even under time pressure: with good tips and the right vacuum gauge
Vacuum measurement involves very small pressures and therefore extremely small forces. A quick reminder: pressure is the force exerted by gas molecules on the vessel wall – in more precise terms, their impacts. The lower the pressure falls, the finer the mechanisms have to be, with appropriate sophistication of the instrument technology, in order to be able to measure these fine effects. However, even a high-precision vacuum gauge from the market leader Testo will become even more precise if you take on board the following tips for vacuum measurement:
Never forget: Before you start evacuating a plant, it is important to zero your vacuum gauge at ambient pressure. This is the only way to ensure your vacuum measurement is correct – and your schedule.
Does your vacuum gauge operate with a high-precision Pirani sensor? Make sure that there are no contaminants such as oil on the sensitive, high-tech component. With such fine measuring ranges, the accuracy of the measurement results can be influenced by even the smallest irritations. In the event of a contamination, professionals can easily clean the sensor opening themselves with a few drops of rubbing alcohol.
Let's be clear: There is no digital vacuum beyond the Google universe. Even a Testo digital vacuum gauge cannot locate a digital vacuum, let alone create one. A vacuum is a state of complete emptiness, which cannot be achieved on PCs or mobile terminal devices, at least from a technical perspective. Or to put it in physical terms: if the pressure for instance falls below 300 mbar during the evacuation of a refrigeration system and you remove pressure from the system molecule by molecule using a good vacuum pump, you achieve a low vacuum, with a very good pump even a medium vacuum, theoretically even a high vacuum and finally an ultra-high vacuum, if you leave quantum physics out of it. You will never achieve a digital vacuum. But smooth evacuation is possible when you rely on a digital vacuum gauge from Testo.
The ALL-NEW testo 565i Vacuum Pump
testo 565i vacuum pump
Can be used with A3 and A2L refrigerants when used as intended. For details see operating instructions.
One app for everything: configure, monitor measurements and manage data with the testo Smart app.
Fully automated evacuations with integrated holding test when used in combination with the testo 552i vacuum probe.
Do you already have a vacuum gauge?
A manifold is the perfect addition.
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One App for all applications
The testo Smart App guides you quickly and easily through measurements on refrigeration, air conditioning and heating systems.
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PRO measuring programs for increasing the efficiency of your applications