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Testo differential pressure measuring device – high-precision measurement via smartphone too

Differential pressure gauges from Testo - your advantages

esto offers high-precision measuring instruments to determine differential pressure. In addition, Testo also meets the highest demands in terms of smart measuring technologies: discover the latest generation of our differential pressure gauges which are operated via smartphone or tablet.

Wide range on offer: differential pressure measuring instruments, differential pressure transmitters, probes and multifunction measuring instruments.

Perfectly designed: handy and robust with a large illuminated display. So that you can always keep an eye on the measuring values.

Versatile and practical: connections for probes to measure further parameters, along with optional accessories, from the practical handy bag to the TopSafe protective case.

Testo's differential pressure gauges – large selection from classic to smart

Differential pressure gauge in use: the most common areas of application

Air conditioning and ventilation

This is what you should pay attention to for differential pressure measurement

Each pressure measurement parameter relates to a reference pressure: with absolute pressure to vacuum, with relative pressure to the environment. When you measure differential pressure, you record the pressure difference between two values defined by you.
  • That is why a differential pressure measuring device always has two connections. Unlike an absolute pressure meter, which only needs one connection.

  • This means a differential pressure measuring instrument can also measure relative pressure.

  • Depending on the reference value, the measurement result can therefore be positive (+) or negative (-), that is indicating either an overpressure or a negative pressure.

It all depends on the differential pressure sensor

A measuring instrument can only be as accurate as its sensor. Testo's differential pressure sensors are highly sensitive, temperature-compensated and at the same time small and robust. This also makes them ideally suited for critical applications.

Practical know-how for differential pressure measurement: how to do it even better

How to make the best use of your differential pressure measuring instrument

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.

Measure differential pressure in the cleanroom:

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.

Differential pressure is not the only thing – more pressure measuring instruments from Testo

Always the right pressure measuring instrument to hand

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.

High-precision absolute pressure measurement

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.