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【范围】
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The purpose of this document is to present test methods that can be utilized to evaluate the filtration and operating
characteristics of filters that will be utilized in a cryogenic system. The methods presented herein are intended to
supplement standard filter testing specifications to allow evaluation of filter performance characteristics in areas that could
be affected by extreme low temperatures. The test methods can be utilized to evaluate filters for particle sizes equal to or
greater than 5.0 μm and flows up to and including 60 gpm (230 L/min) capacity. If higher flow rate filters are to be
evaluated in accordance with the test methods presented herein, it will be necessary to increase the system flow capacity
and the size of effluent sampling system from those recommended in this document.
The test methods presented herein do not encompass testing of cryogenic bypass relief valves, differential pressure
indicators, gages, or components other than a basic filter housing and element.strRefField
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