TM 5-3895-374-10
....................................................................................................................................................... Meters by Average Value
CALIBRATION to a KNOWN VALUE
The following procedure is given for the A/C temperature probe. It could also apply to a conveyor belt scale where test
weights are lowered to cause a known equivalent aggregate rate.
1)
Print a current copy of the Meter Calibration values (keystrokes 8659)
2)
Place the temperature probe in a liquid of known temperature
or
Obtain a stable belt scale zero. Lower the test weights.
3)
Select the METER CALIBRATION BY AVERAGE VALUE display (keystrokes 8652) See Figure 8652.3
4)
Restart the averaging interval by selecting Option 5. If for any reason the test does not remain under constant
conditions, correct the inconsistency and restart the measurement interval by selecting Option 5.
5)
Let the data average until the displayed value is stable. See Figure 8652.4
6)
If calibration is desired, select Option 8 to Correct Average Readings, otherwise ESCape or return to Step 4.
7)
Select and Enter the actual known value(s) for only those meters for which this test applies.
8)
Verify that no other span or any zero numbers have changed from the data printed in Step 1.
9)
As necessary, verify the new span calibration by repeating this procedure starting at Step 3.
page F - 73
SYSTEMS Equipment Corp. 8/31/89 Page (39)
