Testo offers a number of high-precision measuring instruments to determine differential pressure. The testo 510i Smart Manometer allows for differential pressure measurement on gas, hot water heaters, or on filters of air conditioning systems, and flow measurements in ventilation ducts using a Pitot tube.
Wide range available: differential pressure measuring instruments, differential pressure transmitters, probes, and multifunction meters.
Perfectly designed: handy and robust with a large illuminated display. That way, you can always keep an eye on the values.
Versatile and practical: connections for probes to measure additional parameters, along with optional accessories, from the handy bag to the TopSafe protective case.
Large selection from classic to smart.
Everything you need to know to carry out measurement tasks on heating systems efficiently and safely – now available in our new practical guide to download free of charge.
Functional testing and settings for gas-fired systems
Additional inspections of combustion plants
Functional testing and settings for oil-fired systems
Digitalization of flue gas measurement
And lots more besides ...
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.
That is why a differential pressure meter 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.
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.
Whether it is correct use of the pressure gauge or optional accessories which make the measurement process easier in difficult-to-access or contaminated measurement environments – our practical tips in the field of differential pressure measurement enable you to avoid the most common application errors and to get maximum precision and performance from your measuring instrument!
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 proper 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 meter? 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 meter 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 different cleanrooms 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 brought 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 meter means you can be sure that your values are right.
More measuring instruments from Testo
Whether you are servicing a ventilation system, want to commission a heating system, or are responsible for compliance with cleanroom regulations and filter systems – you will find your ideal solution at Testo.
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 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, 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 highly accurate, they also recognize all common refrigerants. This means you are always perfectly equipped if there is the suspicion of a leak.
Testo vacuum gauges enable you to handle evacuation of refrigeration systems or heating pumps even more confidently. If you don't just measure differential pressure, but wish to record other parameters too: a Testo SMART Digital Manifold offers you numerous functions in just one instrument!
The testo Smart App guides you quickly and easily through measurements on refrigeration, air conditioning and heating systems
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