Model 493.02 Controller Service
Calibrating an LVDT
Calibration
112
• Encoder
2. Ensure that displacement control mode is selected.
Stand-Alone — Path: Status > Control Mode > Disp.
Automated — Check Control Mode on the Station Manager
Function Generator panel.
3. Evaluate the mid-displacement position for the actuator.
Stand-Alone:
A. Enable the front panel Dial.
B. Use the Dial to increase the Setpoint adjustment for a
positive command.
Path: Status > Setpoint
C. Adjust the Setpoint to fully extend the actuator and note the
displacement signal value.
D. Adjust the Setpoint to fully retract the actuator and note the
displacement signal value.
• You may need to place the dial
indicator on a block to measure the
mid-displacement position.
• Be sure to zero the dial indicator after
you position it properly.