TB 9-6685-331-50
14. Verification of Calibration.
Before the
resistance measurement of
+50 ppm
(+0.005Ω) accuracy can be verified, the precision display of the probe must be changed
back to its original setting. This must be done for all channels being calibrated.
a. Performance Check
(1) With the configuration panel in place, press SHIFT and ENTER keys.
(2) Repeat paragraph 9, steps a(2) through a(12) above. The display in step a(9)
should be changed to indicate 000.000 to provide enough resolution for ppm
measurements.
(3) Remove the configuration panel and connect a standard resistor to probe No.
1 of the A1012
(4) After warm up and stabilization, compare the resistance value displayed on
the TI with the test report value. If the readings are within the required tolerance of
+50 ppm, the channel and probe are calibrated; if not, the TI will require factory service.
(5) Disconnect the resistor from probe No. 1 and repeat step (4) above for each
probe (channel) requiring calibration.
(6) The TI is now calibrated
b. Adjustment. No adjustment is required.
W/TEMPERATURE PROBE, INSTRULAB, MODEL 4101-10X
15. Preliminary Instructions
a. The
instructions outlined in
paragraphs 15 and
16 are preparatory to the
calibration process. Personnel should become familiar with the applicable sections
before beginning the calibration
b. Items of equipment used in this procedure are referenced within the text by
c. Unless otherwise specified, verify the result of each test and, whenever the test
requirement is not met, take corrective action before continuing with the calibration.
Adjustments required to calibrate the TI are included in this procedure. Additional
maintenance information is contained in the manufacturers' manuals for this TI.
d. Unless otherwise specified, all controls and control settings refer to the TI.