SECTION I IDENTIFICATION AND DESCRIPTION

TB 9-4931-530-50

SECTION I

IDENTIFICATION AND DESCRIPTION

1. Test Instrument Identification.

This bulletin provides instructions for the

calibration of Differential Electronic Level Federal Products Corp., Model 232P-68. The

manufacturer's manual was used as the prime data source in compiling these instructions.

The equipment being calibrated will be referred to as the TI (test instrument) throughout

this bulletin.

a. Model Variations. None.

b. Time and Technique. The time required for this calibration is approximately 1

hour, using the physical technique.

2. Forms, Records, and Reports. Forms, records, and reports required for calibration

personnel at all levels are prescribed by TB 750-25.

3. Calibration Description. TI parameters and performance specifications which

pertain to this calibration are listed in table 1.

Table 1. Calibration Description

Test instrument parameters

Performance specifications

Scale magnification

Range: 0 to 1000 arc s

Accuracy: 4/5 of dial division (40% FS)

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 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.

5. Accessories Required. The accessories listed in table 3 are issued as indicated in

paragraph 4 above and are used in this calibration procedure. When necessary, these items

may be substituted by equivalent items, unless specifically prohibited.