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Page Title:
Environmental verifications methods |
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|  MIL-C-63550E(AR)
shall be tested in accordance
4.2.1.2 Insulation resistance. The assembly
to verify conformance to 3.2.1.2.
with MIL-STD-202, method 302, test condition B,
electrification time if the
Measurements may be taken prior to the 2-minute
and is steady or increasing.
insulation resistance meets the specified limit
4.2.2 Physical characteristics.
4.2.2.1 Weight. The assembly shall be weighed to verify conformance to
3.2.2.1, using commercially available scales accurate to the limits of 4.1.1.
4.2.2.2 Length. The assembly shall be inspected dimensionally to verify
conformance to 3.2.2.2.
4.2.3 Environmental verifications methods. Environmental verification
testing shall be conducted in accordance with detailed test procedures pre-
pared by the contractor and approved by the procuring activity. Testing
methods incorporated in these test procedures shall be in accordance with the
test methods delineated herein.
a. The assemblies undergoing the special tests and examin-
ations of table III shall be subjected to performance
tests before, during (where required in the test
method), and after each environmental test performed.
Assemblies undergoing the quality conformance inspec-
b.
tions of table III shall have passed the acceptance
tests indicated therein. After all environmental
tests have been completed, the assemblies shall be
tested only once for the postenvironmental performance
tests specified.
4.2.3.1 Humidity. The assembly shall be subjected to humidity in accor-
dance with MIL-STD-810, method 507.1, procedure IV, to verify conformance to
3.2.3.1. During humidity exposure, the assembly shall be subjected to the
performance tests of 4.2.1.
4.2.3.2 Operating temperature.
4.2.3.2.1 Low temperature. The assembly shall be subjected to low tempera-
ture in accordance with MIL-STD-810, method 502.1, procedure I, to verify
conformance to 3.2.3.2. The temperature shall be maintained at -45C for 24
hours.
At the conclusion of this time, the assembly shall be stabilized at -32C and
be subjected to the performance tests of 4.2.1. Then the assembly shall be
returned to +23 10C and again subjected to the performance tests of 4.2.1.
24
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