section i IDENTIFICATION AND DESCRIPTION

TB-9-6625-2349-35 Multimeter Mercer Model 83K Manual
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TB 9-6625-2349-35

SECTION I

IDENTIFICATION AND DESCRIPTION

1. Test Instrument Identification.

This bulletin provides instructions for the

calibration of Multimeter Mercer, Model 83K. 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 dc and low frequency 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

Dc voltage

Range: 250 mV to 1000 V in 7 ranges

Accuracy: 3% FS

Dc current

Range: 50 A to 500 mA in 5 ranges

Accuracy: 3% FS

Ac voltage

Range: 2.5 to 1000 V in 6 ranges at 400 Hz

Accuracy: 4% FS

Range: 0 to 20 MΩ in 4 ranges (center scale at 20 Ω, 200 Ω, 20 kΩ, 200 kΩ)

Accuracy: 3 of arc

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-286. 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 required for this calibration are common

usage accessories issued as indicated in paragraph 4 above and are not listed in this