TB 9-6625-2285-24
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Fuel Quantity System Test Set, Simmonds Precision/JC Air, Model PSD 60-
1AF. TO 33D2-3-119-1 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
3 hours, 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.
Table 1. Calibration Description
Test instrument
parameters
Performance specifications
Capacitance measurement
Range: 0.1 to 1999 pf
1 to 10,000 pf (extended range)
Accuracy: r0.1% of reading or r0.2 pf, whichever is greater
Capacitance simulators
Range: 20 pf to 8000 pf (TU)
20 pf to 1000 pf (COMP)
Accuracy: r0.1% of reading or r0.2 pf, whichever is greater
Range: 100 k: to 10,000 M:1
Resistance measurement
Accuracy: r10% of range
1
100 k: not checked due to TI display circuitry limitations.
EQUIPMENT REQUIREMENTS
calibration procedure. This equipment is issued with Secondary Transfer Calibration
Standards Set AN/GSM-287 or AN/GSM-705. 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
to-one ratio between the standard and TI. Where the four-to-one ratio cannot be met, the
actual accuracy of the equipment selected is shown in parenthesis.
