Calibration and maintenance
9323A_002-476e-11.24 Page 45
7.1.1.1 Test system requirements
Reference measurement chain:
The reference measurement chain consists of a
calibrated pre-loaded force sensor and charge
amplifier.
Signal conditioning:
The signal readout devices for both the reference
and test systems must be equipped with peak-hold
functionality.
Load application:
The calibration force must be ramped from zero to
the required working point and back. An external
actuator, e.g. a hydraulic cylinder, should be used if
the calibration loads can not be applied with the test
system's internal actuation mechanism.
7.1.1.2 Reference Press Force Sensor (PFS) installation
Place the reference press force sensor directly in the force
path of the test system as shown in Fig. 33. Always make
use of force distribution caps or spherical washers and
ensure that the test force is applied centrically through the
reference PFS.
Fig. 34: Typical in-situ calibration setup
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