HBM PACEline CLP-Serie Montageanleitung Seite 14

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transducer contains the sensitivity that you need to set on the charge amplifier
in this mounting step.
The contact surfaces that transmit the force to the piezoelectric transducer
must be flat, stiff and clean. Paint and coatings must be removed.
Components that come directly into contact with the force application surfaces
of the force washer should have a hardness value of at least 43 HRC.
The required pre‐stress can be achieved with a screw. Please see the note in
the table below. The property class of the screw must be 10.9 or 12.8. In all
cases, the force washer works in a force shunt as the component that
generates the pre‐stress is mounted in parallel to the force washer (parallel
switched springs). Fig. 5.1 shows use under pre‐stressing by surrounding
construction.
Fig. 5.1: Force washer mounting with force shunt measurement and pre‐stress
generation by means of the surrounding construction
The sensitivity of the measurement chain is reduced by these installation
requirements. Calibration (measuring) is therefore always necessary in the
mounting conditions. Both precise reference force transducers (e.g. C18
series) and the calibrated piezoelectric sensors in the CFT series are
available for this purpose. You can also request calibration from HBM. The
HBM calibration laboratory would be happy to provide you with an offer
regarding the calibration of your pre‐stressed sensors. This is always possible
if your design can be installed in our calibration system.
HBM
F
Force washer
Surrounding construction
A3616-1.0 en/de/fr
CLP