13
P3MBP Blue
Line
A1710-3.3 en
HBM
5
Measuring
At nominal (rated) load, the devices have an output signal of 1 mV/V.
The transducers have been designed to withstand these loads, however, the
actual conditions resulting from the operating load and the variation of the in-
dividual transducers require appropriate measures to be taken to prevent bur-
sting of the transducer.
The devices are hermetically sealed against the environment - so these are
absolute pressure transducers. If it interferes at all, it is easy to take away the
display of ambient pressure, e.g. 1 bar of 5000 bar, at the amplifier by taring.
The devices have reached the end of their service life if the zero signal has
changed by more than 5% or if there is clearly visible and unscheduled defor-
mation and damage to the device.
5.1 Measuring dynamic pressures
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.
The P3MB/5000 bar is designed for 10
7
alternating loads at approx. 4000 bar
and HBM is aiming to further increase the dynamic strength.
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.
