MIL-DTL-19803G
TABLE II. Classification of defects for visual examination of converter.
Critical
Minor
1.
Material imperfections - foreign matter
201. Marking - missing, insufficient,
embedded.
incorrect, illegible or not permanent.
2.
Surface - unclean, rough, misaligned, or
202. Color not as specified.
containing cracks, nicks, or other flaws.
3.
Any component missing, malformed,
fractured, or otherwise damaged.
4.
Any component loose or otherwise not
securely retained.
5.
Incorrect assembling or improper
positioning of components.
6.
Any functioning part that works with
difficulty.
7.
Faulty workmanship or other
irregularities.
4.5 Test conditions.
4.5.1 Oxygen. Unless otherwise specified, the oxygen used in testing the converters shall
conform to MIL-PRF-27210, Type I or Type II.
4.5.2 Temperature and pressure. Unless otherwise specified, tests shall be conducted at
local ambient temperatures and barometric pressure. Corrections shall be made to provide
agreement with the temperature and pressure calibration of the instruments. Inspection data
provided by any instrument not calibrated to normal temperature and pressure (NTP) conditions
shall be corrected to determine NTP requirements. NTP conditions are 29.92 inches of mercury
(101.3 kPa) and 70 °F (21.1 °C).
4.5.3 Test equipment. The delivery rate tests shall be performed on a breathing machine
capable of fulfilling all tests requirements of this specification.
4.5.3.1 Master capacitance bridge. The master capacitance test bridge employed for
capacitance testing the sensing element shall have an accuracy of 0.2 percent or 0.2 pf,
whichever is greater. In all subsequent tests and measurements specified herein, the tolerance of
the measuring equipment shall be added to the specified tolerance for the given test or
measurement.
4.6 Inspection methods.
4.6.1 Visual examination.
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