Offset Adjustment - GeoSIG AC-23 User Manual

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GeoSIG Ltd
AC-23 Accelerometer Manual
5

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 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 3.3:
Sensor Label*
Sensor Output Range
±10 Volts
0 ± 10 Volt differential output
±5 Volts
0 ± 5 Volt differential output
2.5 ±2.5 Volts
2.5 ± 2.5 Volt single-ended output
10 ±10 mA
0 - 20 mA Current-loop (OPTION)
*: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
GS_AC-23_UserManual_V14.docx/27.05.2019
Offset
Adjust
DVM Reading
0.00 ±0.05 V
0.00 ±0.05 V
2.50 ±0.02 V
1
2.50 ±0.02 V
Page 9
Pin 12
-
DVM
+
Pin 1
°

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