TB 9-6625-150-24
5. Accessories Required. The accessories required for this calibration are common
usage accessories issued as indicated in paragraph 4 above, and are not listed in this
calibration procedure.
Table 2. Minimum Specifications of Equipment Required
Minimum use
Manufacturer and model
Common name
specifications
(part number)
CALIBRATOR
Range:
180 to 540 V dc
Fluke, Model 5720A (5720A) (p/o
540 V ac
MIS-35947); w/ amplifier, Fluke
Accuracy: 0.59%
5725A/AR (5725A/AR)
1000 to 3000 Ω
Range:
Hewlett Packard, Model 3458A
1
Accuracy:
(3458A)
36 and 3600 Ω
RESISTANCE STANDARD NO. 1 Range:
IET Labs, HARS-LX-9-0.001
Accuracy: 0.51%
(HARS-LX-9-0.001)
3.6 MΩ2
Beckman, Model CR10M (8598965)
Accuracy: 0.51%
30 MΩ
Beckman, Model CR100M (8598966)
Accuracy: 0.51%
1000 MΩ
RESISTANCE STANDARD NO. 4 Range:
Beckman, Model CR1000M (8579478)
Accuracy: 2.51%
1 Used
only for TI safety check in equipment set-up.
2 Combine
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 and item identification number 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 manufacturer's manual for these TI's.
d. Unless otherwise specified, all controls and control settings refer to the TI.
WARNING
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
OUTPUTS to minimum after each step within the performance
check where applicable.