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Page Title:
Section I IDENTIFICATION AND DESCRIPTION |
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  TB 55-4920-431-35
Section I
IDENTIFICATION AND DESCRIPTION
1.
Test Instrument Identification. This bulletin provides instructions for the
calibration of the Auxiliary Power Unit-Electronic Sequence Unit Multipurpose Test
Set, P/N 161226-200. TM 55-4920-431-13 was used as the prime data source in com-
piling these instructions. The equipment being calibrated will be referred to as
the TI (Test Instrument) throughout this bulletin.
Model Variation. None.
a.
b. Time and Technique. This time required for this calibration is approximately
2 hours, using the dc and low frequency technique.
2.
DA Form 2416 (Calibration Data Card)
a. Forms, records, and reports required for calibration personnel at all levels
are prescribed by TB 750-25. DA Form 2416 must be annotated in accordance with TB
750-25 for each calibration performed.
b. Adjustments to be reported on DA Form 2416 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). Identify the unit for each adjustment, i.e. 438A2R31.
3.
Calibration Description. TI parameters and performance specifications which
pertain to this calibration are listed in table 1.
Table 1.
Calibration
Description
Performance
Test Instrument
Specifications
Parameters
27.5 to 28.5 vdc
Input Power Requirements
20 to 120% RPM
Ranges:
% RPM
Accuracy: ±2.0% RPM (93.32Hz)
Ranges:
300° to 1500°F
Temperature
±35°F of reading
Accuracy:
2
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