Dynamic Measurements; Frequency And Acceleration Limits - HBM WA Series Mounting Instructions

7

Dynamic measurements

7.1

Frequency and acceleration limits

The measurement frequency range of the measurement chain has to be
determined electrically from the upper cut‐off frequency of the amplifier. You
can find the appropriate data in the operating manual for your amplifier.
Maximum permissible acceleration has a decisive effect on the mechanical
characteristics of the displacement transducer. This information can be found
in the appendix to the Technical Data.
In the case of displacement probes, care must be taken that the probe pin
does not withdraw from the measurement object due to inertia.
To a first approximation, many tasks may generally be regarded as sinusoidal.
For maximum permitted acceleration a
the mechanical cut‐off frequency f
WA...
max
(see chapter 13 "Specifications") is:
max
+ 1
f ·
zul
2p
A00546_11_YI0_01 HBM: public
Dynamic measurements
with given displacement amplitude s
a
zul
s
21