TB 9-6625-194-24
Table 1. Minimum Specifications of Equipment Required - Continued.
Manufacturer and model
Common name
Minimum use specifications
(part number)
Dc Current:
Clarke Hess, Model 8100-01-02
CALIBRATOR
Range: 0 to 100 A
(8100-01-02)
Accuracy: Dc A 0.25%
Ac Current:
Range: 0 to 100 A
Frequency: 45 Hz to 10 kHz
Accuracy: 0.25%
Dc range: 20 mV to 2 V dc
Hewlett Packard, Model 3458A (3458A)
Accuracy: 0.45 %
or Fluke, Model 8846A (8846A/G)
CALIBRATION PROCESS
6. Preliminary Instructions
a. The instructions outlined in paragraphs 6 and 7 are preparatory to the calibration
process. Personnel should become familiar with the entire bulletin before beginning the
calibration.
b. Items of equipment used in this procedure are referenced within the text by common
name as listed in table 1.
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 control and control settings refer to the TI.
7. Equipment Setup
HIGH VOLTAGE is used or exposed during the performance of
this calibration.
DEATH ON CONTACT may result if
personnel fail to observe safety precautions.
REDUCE
OUTPUT(S) to minimum after each step within the
performance check where applicable.
a. Connect Calibrator OUTPUT to the Ammeter Calibrator INPUT terminals,
observing polarity.
b. Connect the Multimeter INPUT to TI output terminals.
c. Ensure Calibrator is set to standby.
d. Appendix B has a cross reference listing of the tables for the TIs. Locate
the TI being calibrated and use the appropriate table(s) listed for that TI.