MIL-DTL-12211G
4.8.2 Fungus resistance. Switches shall be tested in accordance with method 508.5 of MIL-STD-810.
Subsequently, the switch shall pass the tests of 4.7.6 and 4.7.3. The following details shall apply:
Test duration: The test duration shall be 90 days.
4.8.3 Immersion. Switches shall be tested in accordance with method 104, of MIL-STD-202. The
following details shall apply:
a. Test condition: B
b. Examination and test after Immersion: The switch shall be removed from the solution and
allowed to drain for a period of five minutes in its normal operating position. It then shall be
subjected to 15 hours of dry operation (three 5 hour periods) at full rated current and voltage and
results compared with pre-immersion data.
4.8.3.1 Immersion for quality conformance. To determine conformance to 3.5.3, switches shall be
immersed in the salt water solution specified in method 104, of MIL-STD-202 and observed for leakage.
Leakage will be indicated by air bubbles escaping from the interior of the compartment. Bubbles that are
the result of entrapped air on the various exterior surfaces of the component shall not be considered a
leak.
4.8.4 Extreme temperatures. To determine conformance to 3.5.4, the switch shall be subjected to the
tests specified in a and b, below.
a. Low temperature. Switch shall be conditioned for 4 hours at -60F+ 5F and while still in
ambient air at that temperature shall be operated for 100 cycles (see definition of 6.5.1) using
the load current specified in 3.3.2.
b. High temperature. Switch shall be conditioned for 4 hours at +245F+ 5F and while still in
ambient air at that temperature shall be operated for 100 cycles (see definition of 6.5.1) using
the load current specified in 3.3.2.
4.8.5 Shock. To determine conformance to 3.5.5, the switch shall be mounted as in intended
operation, and subjected to the sawtooth waveform shock test described in test condition I, method 213 of
MIL-STD-202. An acceleration force of 50 g's shall be applied once in each direction of three mutually
perpendicular axes, one of which will be along the centerline of the switch. During the test, the following
conditions shall apply: The electrical load shall be a lamp load, as specified in 3.3.2. A pressure of 10 psi
above the upper actuation pressure specified on the applicable MS standard or drawing shall be applied
to type I switches. A pressure of 10 psi below the lower actuation pressure specified on the applicable
MS standard or drawing shall be applied to type II switches. During each impact the indicating lamp shall
be observed for evidence of circuit closure. After the test, the switch shall be examined for defects listed
in 3.5.5.
11
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business