MIL-DTL-19803G
4.6.14 Shock test. The converter, filled to rated capacity with liquid oxygen and with the
probe assembled, shall be subjected to the shock test specified in MIL-STD-810, Method 516.2,
Procedures I and III, Figure 516.2-2.
4.6.14.1 Shock test (procedure I). After the shock test, procedure I, the converter shall be
vented to the atmosphere for a 24-hour period. The converter shall meet the evaporation loss
requirements and the structural requirements specified in 3.5.13.1. The converter shall then be
subjected to and pass the delivery rate (room temperature) test.
4.6.14.2 Shock test (procedure III). The converter shall meet the structural requirements
specified in 3.5.13.2.
4.6.15 Salt fog. The converter, with its ports adequately plugged and the probe assembled,
shall be subjected to the salt fog test specified in MIL-STD-810, Method 509.1, Procedure I.
The converter shall meet the requirements specified in 3.5.14. The converter shall then be
subjected to and pass the following tests:
a. Visual examination.
b. Complete assembly pressure test (4.6.3.2).
c. Sensing element calibration (4.6.8).
d. Evaporation loss (4.6.10.1).
e. Delivery rate (room temperature) (4.6.16.1).
4.6.16 Delivery rate. The evaporation tubing shall consist of 100 + 5 feet (30.48 + 1.52 m)
of 0.3125 inch (7.94 mm) outside diameter aluminum tubing. The supply port of the converter
shall be connected to a breathing machine through the evaporation tubing. The breathing
machine shall be set up to simulate the complete breathing characteristics of three human
subjects, breathing in the flow patterns shown on figure 6. The converter shall be filled to rated
capacity prior to the test. After 3 minutes of stabilization, the converter pressure at the supply
port shall remain between 55 and 90 psig (379 and 620 kPa) throughout the test. A pressure drop
below 55 psig (379 kPa) during the first three minutes of the test is acceptable.
4.6.16.1 Delivery rate (room temperature). The converter assembly shall be conditioned at
room temperature for 3 hours. After conditioning and while still at this temperature, the
converter shall be tested as specified in 4.6.16. The converter shall meet the requirements
specified in 3.5.15.
4.6.16.2 Delivery rate (low temperature). The converter assembly shall be conditioned at a
temperature of -65 + 2 °F (-53.9 + 1.1 °C) for 3 hours. After conditioning and while still at this
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