TB 9-6625-1493-24
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Differential voltmeter dc voltage accuracy and
stability (reference level) ......................................
Null detector ..........................................................
Differential voltmeter ac voltage accuracy
(transfer level) ..................................................
Differential voltmeter ac voltage accuracy
(reference level) ................................................
Supply voltage .......................................................
Final procedure .....................................................
IV. CALIBRATION PROCESS FOR VOLTAGE
DIVIDER, FLUKE, MODEL 80E-10
Preliminary instructions ......................................
Equipment setup ...................................................
Meter accuracy ......................................................
Divider accuracy....................................................
Final procedure .....................................................
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Differential Voltmeter, Fluke, Models 887A, 887AB, and 887AB/AN, and
Voltage Divider, Fluke, Model 80E-10. The manufacturers' manuals were used as the prime
data sources in compiling these instructions. The equipment being calibrated will be
referred to as the TI (test instrument) throughout this bulletin.
a. Model Variations. Variations among models are described in text.
b. Time and Technique. The time required for this calibration is approximately 4
hours for Section III, and 1 hour for Section IV, using the dc and low frequency
technique.
2. Forms, Records, and Reports
a. Forms, records, and reports required for calibration personnel at all levels are
prescribed by TB 750-25.
b. Adjustments to be reported are designated (R) at the end of the sentence in which
they appear. When adjustments are in tables, the (R) follows the designated adjustment.
Report only those adjustments made and designated with (R).
3. Calibration Description. TI parameters and performance specifications which
pertain to this calibration are listed in table 1.