With differential pressure measurement, it is important to connect the right pressure to the right connection. Make sure that you connect the overpressure to the plus connection (+) and the negative pressure to the minus connection (-). This enables your differential pressure gauge to operate over the full measuring range – and you can count on high-precision measuring values.

Did you know that you can also measure the relative pressure (that is the difference from the currently prevailing ambient pressure) with your Testo differential pressure measuring instrument? To do so, you simply leave one of the two pressure connections open and set the current ambient conditions as the reference value.

Use of a Pitot tube makes sense, especially for measurements in dusty and contaminated air. The air velocity in the flow duct of a system can for instance be determined via the differential pressure between dynamic and static pressure.

Air filters in air conditioning systems have to regularly be subjected to a differential pressure measurement. A Testo pressure measuring instrument means you are on the safe side: the differential pressure probe can be connected to the filter's ports in next to no time. If the pressure difference before and after the filter reaches a critical value, there is a warning signal: you then know that a filter change is required so that the ventilation can continue to work properly.

If it is a case of ensuring standard-compliant operation in cleanrooms, the requirements in terms of the precision of the differential pressure measuring instrument could not be higher. The pressure difference between rooms of different cleanroom classes is precisely controlled – and has to be strictly adhered to. Because the minimum overpressure of the cleanroom ensures that, when the door is open, no air flow is created from the unclean room into the clean one, which would contaminate the latter. The standardized differential value is between 5 and 20 Pa. A Testo differential pressure gauge means you can be sure that your values are right.

Pressure parameters play an important role in numerous applications in building services, industry and research. In order to ensure you have the right pressure measuring instrument to hand for every requirement, Testo offers you the appropriate instrument for each pressure.

Alongside differential pressure, absolute pressure is one of the commonly measured pressure parameters. Ensure the quality of your maintenance or servicing tasks with an absolute pressure meter from the market leader. This means you can be sure your values are right too. And at the same time take advantage of a first-class price-performance ratio.

Are you looking for a leak detector for fast and thorough leakage location? Testo's leak detectors are not only particularly accurate, they also recognize all common refrigerants. This means you are always perfectly equipped if there is the suspicion of a leak.

A Testo vacuum gauge enables you to handle all requirements involving the evacuation of refrigeration systems or heating pumps even more confidently. And if you don't just measure differential pressure, but wish to record other parameters too: a Testo digital manifold offers you numerous functions in just one instrument!