SECTION II EQUIPMENT REQUIREMENTS - TB-9-6625-1493-350010

Forms, Records, and Reports - TB-9-6625-1493-350009

SECTION III CALIBRATION PROCESS FOR DIFFERENTIAL VOLTMETER

TB-9-6625-1493-35 Differential Voltmeter John Fluke Models 887A 887AB and 887AB/AN Voltage Divider John Fluke Models 80E-10 and 80E-10AN Manual
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TB 9-6625-1493-35

SECTION II

EQUIPMENT REQUIREMENTS

4. Equipment Required. Table 2 identifies the specific equipment to be used in this

calibration procedure. This equipment is issued with Secondary Transfer Calibration

Standards Set AN/GSM-287 or Secondary Reference Calibration Standards Set

NSN 4931-00-621-7878. 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 minimum use specifications

listed in table 2. The accuracies listed in table 2 provide a four-to-one ratio between the

standard and TI. Where the four-to-one ratio cannot be met, the actual accuracy of the

equipment selected is shown in parenthesis.

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

Manufacturer and model

Common name

Minimum use specifications

(part number)

AC MEASUREMENT

Range: 2.0 mV to 1000 V ac

John Fluke, Model 5790A

STANDARD

Accuracy: 0.0139 %

(5790A)

CALIBRATOR

Dc Voltage:

John Fluke, Model 5720A/CT

Range: 100 mV to 1000 V

(p/o MIS-35947); w/power

Accuracy: 12.5 ppm1,2

amplifier John Fluke, Model

5725 A/CT (5725A/CT)

Ac voltage3,4

Range: 100 mV to 1000 V

Frequency (in kHz):

.400 & 4.0

9.0

15 & 20

100

Accuracy: (in %)

.025

.037

.075

.125

.25

DC REFERENCE

Range: 10 V

John Fluke, Model 732A (732A)

STANDARD

Accuracy: Test report4

DC VOLTAGE DIVIDER

Range: 10:1

ESI, Model RV726 (MIS-10295)

Accuracy:1

(Reference); ESI, Model RV

722 (RV722) (Transfer)

MULTIMETER

Range: 100 mV to 1000 V dc

John Fluke, Model 3458A/E02

(REFERENCE)

Accuracy:4

(MIS-35947/1 Type 2)

POWER SUPPLY

Range: 8.0 to 10 kV

John Fluke, Model 410B/AT

Accuracy: 0.75%

(MIS-10230)

RATIO TRANSFORMER

Range: 0 to 1.000000

ESI, Model DT72A (7915908)

Accuracy: Test report3

STANDARD RESISTOR

Range: 10 kΩ

General Radio, Model 1444A

(MIS-10400)

Accuracy: Test report4

Combined accuracy of calibrator (10 V dc) and dc voltage divider is 7.275 ppm.

2Combined

accuracy of calibrator (1000 V dc) and multimeter (100 mV and 1.0 V dc) is 25 ppm.

3Combined accuracy of calibrator (1 V, 400 Hz) and ratio transformer for following outputs is: 1 mV, .625%; 10 mV, .075%;

and 100 mV, .0195%.

4Utilize; manufacturer's 24-hour specifications for dc voltage (1 through 1000 V); dc reference standard and standard

resistor are used only to characterize multimeter.

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