MIL-S-27626F
4.1 Classification of tests. The inspection and testing of the sampler shall be classified as follows:
a. Individual tests (see 4.3)
4.2 Test conditions
4.2.1 Apparatus. Insofar as practicable, apparatus used in conjunction with the testing specified herein shall be of laboratory precision type and shall be calibrated at intervals properly spaced to insure continued laboratory accuracy.
4.2.2 Pressure gage accuracy. Data on gage pressure shall be accurate to within 10 percent.
4.3 Individual tests. Each sampler shall be subjected to the following test as described under 4.5:
a. Examination of product (see 4.4.1) b. Mechanical inspection (see 4.4.2) c. Functional check (see 4.4.3)
d. Pressure test (see 4.4.4)
e. Individual operational test (see 4.4.5)
4.4 Test methods
4.4.1 Examination of product. The sampler shall be examined to determine compliance with this specification with respect to materials, workmanship, and marking and as specified herein.
4.4.2. Mechanical inspection. A mechanical inspection of all components and parts shall be conducted. All pertinent data concerning conditions, defects of manufacture, damage in transit, and damage through use prior to test shall be recorded.
4.4.3 Functional check. All mechanical parts shall be checked for free and proper functioning.
4.4.4 Pressure test. The sampler shall be pressure-tested and certified in accordance with
Transportable Pressure Equipment Directive and with DOT Regulation 49 CFR 178.69 and
178.70.
4.4.5 Individual operational test. Each sampler shall be connected to a source of liquid oxygen. The sampler shall be used in accordance with the operational instructions to obtain a liquid sample. The sampler shall then be disconnected from the liquid source and the sample allowed to vaporize. A resulting cylinder pressure of less than 1600 psig within 20 minutes from the time
the sample was taken shall be cause for rejection. The cylinder shall then be left pressurized for at least 24 hours. Any loss of pressure attributable to leakage shall be cause for rejection.
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