14
P6A
7
Measuring
To get perfect results whenever you are measuring pressure, the correlation
between absolute pressure, gauge pressure and atmospheric pressure
must be taken into account without fail when setting up the measuring system.
The transducers are pressure transducers which, due to their mechanical
construction with the hermetically sealed reference chamber, measure
absolute pressure only. Under certain conditions it is also possible to measure
gauge pressure with an absolute pressure transducer. The atmospheric
pressure is then compensated electrically.
Dead volume and any fluid or gas volume present on the user side can also
lead to a false measurement result.
7.1
Measuring dynamic pressures
Calibration by reference to static pressures also applies when measuring
dynamic pressures. Please note that in the case of measurement frequencies
in the natural frequency range, amplitude reinforcements have to be taken
into account.
When there is dynamic loading, maximum pressure must not exceed the rated
pressure. The oscillation bandwidth (peak-to-peak) of the permitted pressure
fluctuation must not exceed 70% of the final scale value.
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