Active Standard ASTM F431 | Developed by Subcommittee: F11.22
Book of Standards Volume: 15.08
Historical (view previous versions of standard)
This specification covers the acceptable design details for the plenum chamber used in specified air performance measurement tests for vacuum cleaners. Plenum chambers conforming to this specification shall be fabricated in accordance with the dimensions, tolerances, and notes indicated for the following components: plenum chamber assembly; orifice plate; orifice plate holder and assembly; manometer connection; and acceptable machined edges for orifice plates.
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1.2 The plenum chamber is designed for vacuum measurements only. (Warning—The plenum chamber has been shown to accurately determine maximum air power values at various test points for vacuum cleaners. There is a possibility that the airflow values measured with orifices larger than 2 in. at high flow rates may be erroneous due to the proximity of the top and bottom surfaces to the orifice plate inlet.)
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
F558 Test Method for Measuring Air Performance Characteristics of Vacuum Cleaners
F820 Test Method for Measuring Air Performance Characteristics of Central Vacuum Cleaning Systems
ICS Number Code 97.080 (Cleaning appliances)