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|  MIL-R-85523A(AS)
4.7.7.5 Underwater test set-up.
Underwater testing shall be in accordance
with Figure 4.
4.8
Methods of inspection.
4.8.1
Visual examination.
4.8.1.1 Regulators. The regulator shall be examined visually for defects to
determine conformance to this specification. Defects shall be defined in
accordance with Table IX. The regulator shall pass the requirements specified in
3.6.1.1.
4.8.1.1.1 Dimensions. The regulator selected as a sample unit from the lot,
shall be checked dimensionally to determine conformance to the dimensions
specified on Drawing 1440AS101.
4.8.1.2 Packaging. Each of the fully prepared shipping containers,
containing regulators, selected as a sample unit from the lot, shall be examined
to determine that the packaging, packing and marking conform to this
specification. Defects shall be defined in accordance with Table X. The
packaging shall pass the requirements specified in 3.6.1.2.
4.8.2
Outlet pressures.
4.8.2.1 Dynamic pressure. The regulator shall be connected to an air
pressure source to provide inlet pressures as specified in Table II. A
sinusoidal breathing simulator shall be connected to the regulator outlet port as
specified in 4.7.7.4. The breathing simulator shall be set to the connections
specified in Table II and the regulator outlet pressures shall be recorded in
accordance with Figure 3. The regulator shall pass the requirements specified in
3.6.2.1.
4.8.2.2
Steady state pressure.
4.8.2.2.1 Performance. The regulator shall be connected to a pressure
source to provide inlet pressures as indicated in Table III. The regulator shall
be subjected to the inlet pressures, altitudes, and flowrates (see 4.7.7.1)
specified in Table III and the regulator outlet pressures shall be recorded,
without the use of a restrictor. The regulator shall pass the requirements
specified in 3.6.2.2.1.
4.8.2.2.2 Performance sampling. The regulator shall be connected to a
pressure source to provide inlet pressures as indicated in Table IV. The
regulator shall be subjected to the inlet pressures, altitudes and flowrates (see
4.7.7.1) specified in Table IV and the regulator outlet pressures shall be
recorded, without the use of a restrictor. The regulator shall pass the
requirements specified in 3.6.2.2.2.
4.8.3 Noise level. The regulator shall be installed as shown in Figure 2.
The regulator shall then be subjected to an inlet pressure of 30 psig, with an
outlet flow of 100 lpm. The noise level shall be measured (see 4.7.7.3) at the
1/3 octave band center frequencies specified in Table V. The test shall be
repeated for an inlet pressure of 80 psig. The regulator shall pass the
requirements specified in 3.6.3.
4.8.4
Leakage.
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