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AC-23 Accelerometer User Manual
11.08.2022 / V17
6 Offset Adjustment
Z
Y
X
After the new full scale has been selected, the offset must be checked and eventually the potentiometer
must to be re-adjusted to remove any small offset change at output.
In such case, be sure to identify correctly the offset potentiometers and don't touch any other potentiometers
as it would void its calibration.
Connect a Digital Voltmeter (DVM) as shown on the above figure and adjust the offset potentiometers so that
the DVM readings stay within the ranges indicated in the following table, according to the sensor output range
given in Section Error! Reference source not found.:
Sensor Label*
±10 Volts
±5 Volts
2.5 ±2.5 Volts
10 ±10 mA
* The output range is written on the sensor label.
1 The DVM must be connected on the load (at recorder) for current loop.
Figure 7, Offset potentiometer location
Table 2 – Sensor Output Range
Sensor Output Range
0 ± 10 Volt differential output
0 ± 5 Volt differential output
2.5 ± 2.5 Volt single-ended output
0 - 20 mA Current-loop (OPTION)
Offset
Adjust
Pin 12
-
DVM
+
Pin 1
DVM Reading
0.00 ±0.05 V
0.00 ±0.05 V
2.50 ±0.02 V
1
2.50 ±0.02 V
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