MIL-DTL-19328F
4.2.2 Qualification sample for the qualifying activity. Along with the qualification test report, the
manufacturer shall submit one converter to the qualifying activity. This sample may be a tested sample, except
that it shall not be subjected to the gunfire test.
4.3 Conformance inspection. The conformance inspection shall consist of the following:
a. Individual inspection (see 4.3.1)
b. Sampling inspection (see 4.3.2)
4.3.1 Individual inspection
4.3.1.1 Converters. Each converter shall be subjected to the following methods of inspection:
a. Visual examination (see 4.5.1)
b. Inner vessel pressure (see 4.6.8)
c. Filling time (see 4.6.2)
d. Buildup time (see 4.6.4)
e. Dielectric strength (see 4.6.5)
f. Insulation resistance (see 4.6.6)
g. Sensing element calibration (empty converter) (see 4.6.7.1)
h. Final assembly pressure (see 4.6.1)
I. Evaporation loss (see 4.6.3)
j. Overpressure safety (see 4.6.10)
k. Delivery rate (room temperature)(see 4.6.9.2) the delivery rate shall be monitored for 20 minutes and then
the test shall be terminated.
4.3.2 Sampling inspection. The lot size for sampling plan inspection shall be 50 units (converters). One out
of every 50 units that have been manufactured under essentially the same conditions using the same facilities and
equipment shall be selected for sampling inspection. Continuous production is not required. Component parts and
material need not be delivered from the same batch or lot. The following tests or inspections are required:
a. Dimensions (see 4.5.1.1)
b. Delivery rate (low/high temperature) (see 4.6.9.3 and 4.6.9.4)
c. Sensing element calibration (filled converter) (see 4.6.7.2)
d. Overpressure safety (standard temperature) (see 4.6.10.2)
e. Delivery rate (room temperature) (see 4.6.9.2)
4.3.2.1 Rejection and retest. If one or more items selected from a lot fail to meet the specification,
acceptance of all items in the lot shall be withheld until the extent and cause of failure have been determined. The
contractor shall explain fully to the Government representative and notify the procuring activity in writing the
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