Information About The Charge Amplifier And Electrical Connection - HBM CMD Serie Bedienungsanleitung

Tips for piezoelectric measurement technology
68
- Determining sensor sensitivity after mounting.
For example, measure the force in N or a mass in kg
simultaneously with the charge generated by the
piezoelectric force washers at this force. Calculate the
sensitivity by dividing the charge by the force (sensi­
tivity = charge/force).
- Adjusting the charge amplifier.
The measuring range and amplification of the CMD
digital charge amplifier can be adjusted as required.
Enter the sensitivity calculated above in the CMD
Assistant software. The measuring range should be
set to achieve optimum resolution.
- Verifying the set parameters.
Finally, you should again compare the measuring
chain with the reference measuring chain.
14.3 Information about the charge amplifier
and electrical connection
The charge output by a piezoelectric sensor is converted
into a proportional voltage (14.5).
A2781-3.1 HBM: public
CMD