TB 9-6625-2352-35
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-286, and AN/GSM-287. Alternate items may be used by the
calibrating activity. The items selected must be verified to perform satisfactorily prior to
use and must bear evidence of current calibration. The equipment must meet or exceed the
to-one ratio between the standard and TI.
usage accessories issued as indicated in paragraph 4 above, and are not listed in this
calibration procedure.
Manufacturer and model
(part
Minimum use specifications1
Common name
number)
CALIBRATOR
Dc voltage:
Range: 0 to 1100 V
Fluke, Model 5720A (5700A/EP)
Accuracy: .375%
(p/o MIS-35947), w/amplifier,
Fluke, 5725A/AR (5725A/AR)
Dc current:
Range: 50 A to 10 A
Accuracy: .25%
Ac voltage
Range: 0 to 1100 V
Frequency: 60 Hz to 100 Hz
Accuracy: .625%
POWER SUPPLY
Fluke, Model 410B/AT
Range: 0 to 6300 V dc
(MIS-10230) (MIS 45839)
0.25%
Accuracy:
Biddle-Gray, Model 71-631
Range: 0 to 1.1 MΩ
STANDARD NO. 1
(7910328)
0.047%
Accuracy:
Beckman, Model CR10M
Range: 1 to 10 MΩ
STANDARD NO. 2
(8598965)
0.047%
Accuracy:
Beckman, Model CR100M
Range: 10 to 200 MΩ
STANDARD NO. 3
(8598966)
0.047%
Accuracy:
1The
ranges and accuracies listed reflect the highest range required and the best accuracy required, respectively, in this
technical bulletin.
6. Preliminary Instructions
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.
