Kistler 9323AAA - Page 50

Press Force Sensor
Type 9323AA, 9323A, 9333A, 9343A, 9363A, 9383A, 9393A
Page 48 9323A_002-476e-11.24
6. Apply load at the working point at least 5 times, note the peak values from both the reference and
test systems for each cycle.
i
1
2
3
4
5
i
REF
F
ˆ
[MU]
i
UUT
Q
ˆ
[pC]
7. Calculate the peak sensitivity for each cycle.
i
i
REF
UUT
i
F
ˆ
Q
ˆ
*S =
i
1
2
3
4
5
S
i
* [pC/MU]
8. Calculate the average sensitivity:
5
*S
*S
i
5
1i
∑
=
=
S*
[pC/…..
MU
]
9. Enter the new sensitivity S* into the test system charge amplifier.
10. Apply load at the working point to confirm results.
REF
F
ˆ
[MU]
UUT
F
ˆ
[MU]