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Display Explanation
Setting the accelerometer sensitivity
(When using a different accelerometer)
The sensitivity of the supplied Vibration accelerometer PV-55 is 5.1 mV/m/s
2
.
When using a different accelerometer, change the setting at the VA-11 so that
it matches the sensitivity of the accelerometer. (The sensitivity is indicated in
the calibration chart that comes with the accelerometer.)
1. Cause the accelerometer sensitivity item to flash (see previous page).
2. Use the numerical setting buttons [
] [ ] to change the value.
Pressing the [ ] key increases the value and pressing the [ ] key
decreases it. Keeping a key depressed for 2 seconds or more causes the
value to change rapidly. The display range is 0.10 to 99, with the
resolution as indicated below.
Display resolution 0.10 to 1.0 "0.01" steps
1.0 to 10 "0.1" steps
10 to 99 "1" steps
Example:
When using the preamplifier VP-26C, set
the charge sensitivity. In the example
shown here, the required setting is "5.9".
This means that the preamplifier converts
1 pC of electrical charge into 1 mV.
5.9 pC / m / s
2
× 1 mV / pC = 5.9 mV / m / s
2
VP-26C Value entered in VA-11
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