MIL-DTL-6508C
b. While the thermometer is being vibrated, the pointer shall not oscillate over an
indicated range greater than 1 °C at any frequency.
c. Following the 2-hour vibration period, the thermometer reading shall be recorded at
the same temperature as taken at the beginning of the test. The change in reading obtained from
the test conducted before and the test after vibration shall not exceed 1.0 °C. No damage shall
result from this test.
4.5.9 Altitude. The thermometer shall be placed in an altitude chamber and the pressure
reduced to simulate an altitude condition of 50,000 feet (3.436 inches mercury absolute pressure)
and a temperature of -65 ±2 °C (-85 ±3.6 °F). Before the chamber is evacuated, it shall be
ascertained that the thermometer assembly is at the same temperature as the interior of the
chamber. No change in accuracy shall occur as a result of the reduction in pressure, nor shall
there be any damage to the thermometer. After completion of the altitude test, the sealing test
specified in 4.5.7 shall be repeated. There shall be no moisture leakage evident on the dial or
inner surface of the cover glass.
4.5.10 Thermal conductivity. The dial indicator head of the thermometer shall be subject
to agitated air at a temperature of 70 °C (158 °F). The thermometer stem shall then be immersed
to the attaching threads, in an agitated ice bath maintained at the temperature of 0 °C (32 °F).
There shall be no change in indication over the tolerances specified in table II as a result of the
temperature differential.
4.5.11 Vibration endurance. The vibration test shall be repeated, except that the
vibration time shall be 30 hours. After completion of 30 hours vibration, the scale error test shall
be repeated. The scale errors at the conclusion of the vibration endurance test shall not exceed
the tolerances specified in table II by more than 1.0 °C.
4.5.12 Detail examination. The thermometer shall be critically examined to determine
full compliance with regard to weight, physical dimensions, dial composition, markings, and
similar detail requirements.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as
specified in the contract or order (see 6.2). When packaging of materiel is to be performed by
DoD or in-house contractor personnel, these personnel need to contact the responsible packaging
activity to ascertain packaging requirements. Packaging requirements are maintained by the
Inventory Control Point's packaging activities within the Military Service or Defense Agency, or
within the military service's system commands. Packaging data retrieval is available from the
managing Military Department's or Defense Agency's automated packaging files, CD-ROM
products, or by contacting the responsible packaging activity.
12
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business