Quanser SRV02 Series User Manual - page 8
In the following sections, it is also assumed that the FLEXGAGE is connected as
described in the Typical Connections table above.
As you can see in Figure 4 above, the FLEXGAGE circuit has 2 adjustable
potentiometers. One is for the Offset adjustment and the other is for the Gain
adjustment. Build a controller that displays the measurement from analog input # 1 (This
is the signal connected to S2 on the UPM).
3.2.1. Offset Adjustment
Mount the FLEXGAGE onto the calibration stand that shipped with the module. Place the
tip in the middle tooth of the comb as seen in Figure 5 below.
Your controller should be running and reading 0 Volts. If there is an offset in your
measurement, adjust the Offset potentiometer such that your measurement reads 0
volts.
3.2.2. Gain Adjustment
After adjusting the measurement to its 0 measurement, you should check and make sure
the sensor is calibrated as desired. The sensor should read 1 Volt per 1 inch of tip
deflection. Each slot or tooth in the calibration comb corresponds to ¼ inch displacement.
Move the tip counter-clockwise 4 slots as seen in Figure 6 below.
Page # 8
Revision: 01
Figure 5 - Place tip in middle slot