Dwyer LCR10 - Manual (Page 17)

April, 2003 Page 17 of 20 LCR10 IOM
4-2 Probe Offset Adjustment (pen offset)
This recorder has been accurately calibrated at the factory. Before making any
adjustments, this instrument should be in service for 24 hours.
Thereafter, if any adjustment is required, perform the following procedure.
1. Place a Certifi ed Test indicator alongside the recorder’s sensor
probe in a monitored controlled condition.
2. Once the input has leveled out, compare the position of the pen
on the recorder to the reading on the test device.
3. If an adjustment is required, depress and hold either the LEFT (1) or
RIGHT (2) arrow key. The pen will begin to move after approximately
ten (10) seconds. Using the LEFT arrow (1) or RIGHT (2) arrow keys,
position the pen on the chart to correspond to the value of the test
device. Once the corrected value is obtained no further keystrokes are
required.
After the calibration check is complete, the recorder will return to normal
recording mode within 10 seconds.