Historical
ANSI/ASHRAE 28-1996 (RA 2006)
Method of Testing Flow Capacity of Refrigerant Capillary Tubes
Provides a uniform procedure for testing capillary tubes by determining the dry nitrogen flow capacity under specific test conditions so the procedures may serve as a primary standard for use by all test laboratories. Provides a basis for agreement between capillary tube manufacturers and users, and provides a standard procedure against which all other methods of tests may be checked. Dual units of measurement.
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]