MIL-DTL-19328F
permanently recording results of at least 12 tests. Results and dates of all the evaporation loss tests conducted by
the converter manufacturer shall be lightly but legibly recorded upon the plate by the manufacturer.
3.5.2 Warning notes. A warning note shall be located in a conspicuous place on the container. The note may
be applied by decal, plate, or stencil. The following information, in .25 inch (6.35 mm) high red letters on a white
or frosted aluminum background, shall be provided:
CAUTION
HIGH VACUUM CONTAINER
HANDLE WITH CARE
3.6 Workmanship. The converters shall be uniform in quality and shall be free from irregularities, defects, or
foreign material which could adversely affect safety, performance, reliability, or durability.
3.7 Performance.
3.7.1 Final assembly pressure. When the converter is subjected to the final assembly pressure of 95 psig
(655kPa) as specified (see 4.6.1), it shall not leak except for the leakage allowed for installed components by their
respective specifications.
3.7.2 Filling time. The time required to fill the converter, which shall have been initially at room
temperature, when tested as specified (see 4.6.2), shall not exceed 5 minutes.
3.7.3 Evaporation loss.
3.7.3.1 Initial evaporation loss in vented condition. The converter, when tested as specified (see 4.6.3.2),
shall not have a weight loss rate greater than 2.5 pounds (1.13 kg) for a 24-hour period with the unit vented to the
atmosphere.
3.7.3.2 Second evaporation loss in vented condition. The converter, when tested as specified (see 4.6.3.3),
shall meet the requirements specified (see 3.7.3.1).
3.7.3.3 Evaporation loss in pressurized condition. The converter, when tested as specified (see 4.6.3.4), shall
not have a weight loss rate greater than 3.0 pounds (1.36kg) for a 24 hour period. If this amount is exceeded then
6.0 pounds (2.72 kg) for a 48-hour period may be substituted.
3.7.3.4 Buildup time. The time required to attain the buildup pressure of 70 psig (483 kPa), when tested as
specified (see 4.6.4), shall not exceed 5 minutes.
3.7.3.5 Dielectric strength. The leakage current of the converter sensing element, when measured as
specified (see 4.6.5), shall not exceed 1.0 milliampere.
3.7.3.6 Insulation resistance. The insulation resistance of the converter sensing element, when measured as
specified (see 4.6.6), shall be a minimum of 10 megohms between the converter ground and each electrode, and a
minimum of 20 megohms between the electrodes.
3.7.4 Sensing element calibration.
3.7.4.1 Empty converter. The capacitance of the sensing element, when inspected as specified (see 4.6.7.1),
shall be 63.5 +1 picofarads.
3.7.4.2 Capacitance. The capacitance of the sensing element, when tested as specified (see 4.6.7.2), shall be
between the maximum and minimum limits as derived from the following equations:
6
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business