Pressure sensors



Can each pressure transmitter measure any medium?


Can the connector be altered?

The electrical connection cannot be altered.



What causes zero point drift?


What solutions are there against pressure spikes?


Will a pressure transmitter also work without a power supply?




What is the overpressure limit?


At what pressure could the pressure measuring instrument be destroyed?


What is equipment for ventilation and air-conditioning used for?


Why is it important to make V/AC equipment as energy-efficient as possible?

For reasons of environmental protection and cost, it is very important to make ventilation and air-conditioning equipment as energy-efficient as possible, since the largest energy consumption in residential, office and commercial real estate is spent on ventilation and air-conditioning. In addition, some EU standards now even regulate energy efficiency.



Which pressure connections are available with electronic pressure measuring instruments?

For electronic pressure measuring instruments, different pressure connections are available. The two most important versions are connections with internal diaphragm and connections with flush diaphragm.

How is the structure of an internal diaphragm different from the structure of a flush diaphragm?

In the case of the internal diaphragm, the medium finds its way to the sensor diaphragm inside the connection via a pressure port. With a flush diaphragm, the pressure port is sealed flush by a second diaphragm. A transmission fluid inside the sensor transmits the pressure to the internal sensor diaphragm.

When are pressure sensors with internal diaphragms or flush connections used?


What are the advantages of a pressure connection with flush diaphragm?

Pressure connections with flush diaphragm have the advantage that the medium cannot find its way into the interior of the connection. This means that they can also be used with crystalline, viscous, aggressive, abrasive and adhesive media. Since the flush diaphragm can be made of special materials, the sensor can be protected against possible damage.

How does a zero point error affect the accuracy of a pressure sensor?

If a zero point error occurs, the measuring result changes because the characteristic curve shifts in parallel.

How does a span error affect the accuracy of a pressure sensor?

The span error changes the measuring result since it changes the slope of the characteristic curve. At the beginning of the scale, this error is of minor importance, but it adds up and from a certain size it is noticeably significant.



How do zero point errors, span errors and non-linearity affect the accuracy of pressure sensors?

If all three measuring errors occur at the same time, they either cancel each other out or increase the total error.