SECTION III CALIBRATION PROCESS

TB 9-4920-452-35

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

standard and TI.

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)

John Fluke, Model 5700A/CT

CALIBRATOR

Ac voltage:

(p/o MIS-35947)

Range: 200 to 300 Hz at 28 V

Dc voltage:

Range: 0.89 to 10.13 mV

Accuracy: ±.25%

FREQUENCY COUNTER

Range: 196.5 to 303.5 Hz

Hewlett-Packard, Model 5345A

Accuracy: ±.29%

(MIS-28754/1 Type 1)

w/5355A (5355A)

PRESSURE GAGE

Range: 500 to 9000 psi

Mansfield and Green, Model

TESTER

Accuracy: ±0.25%

10-10525 (10-10525)

RESISTANCE STANDARD Range: 1.0Ω

Biddle-Gray, Model 71-631

(7910328)

Accuracy: +1%

THERMOMETER

Range: Ambient temperature

Instru lab, Inc., Model 4101-

INDICATOR

Accuracy: ±1 oF

10X (7915890)

SECTION III

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 manufacturer's manual for this TI.

d. Unless otherwise specified, all controls and control settings refer to the TI.