TB 9-6625-159-24
Table 2. Minimum Specifications of Equipment Required.
Manufacturer and model
Minimum use specifications1
Common name
(part number)
CALIBRATOR
Dc voltage:
Fluke, Model 5720A (5720A) (p/o
Range: 30 mV to 1000 V dc
MIS-35947); w/ amplifier, Fluke
Accuracy: 0.1875%
5725A/AR (5725A/AR)
Ac voltage:
Range: 300 mV to 750 V ac
Frequency: 40 Hz to 1 kHz
Accuracy: 0.2%
Dc current:
Range: 3 mA to 9 A
Accuracy: 0.25%
Ac current:
Range: 3 mA to 9 A
Frequency: 45 Hz to 1 kHz
Accuracy: 0.25%
Frequency:
Range:5 V, 50 kHz
Accuracy: 0.125%
IET, Model HACS-Z-B-3E-1μF p/o
Range:
1000 F
STANDARD
Accuracy: 0.75%
HACS-Z-B-10E-1pF
-30 C to 400 C
COOL/HEAT SOURCE
Range:
Fluke, Model 9011-A/B
Accuracy: 0.5%
(9011-A/B)
400 kΩ
Range:
IET Labs, HARS-LX-9-0.001
STANDARD NO. 1
Accuracy: 0.25%
(HARS-LX-9-0.001)
40 MΩ
Range:
IET Labs, HRRS-Q-4-1M-10KV-RM
STANDARD NO. 2
Accuracy: 0.375%
(HRRS-Q-4-1M-10KV-RM)
The ranges and accuracies listed reflect the highest range required and the best accuracy required, respectively,
1
in this technical bulletin.
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 2.
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.