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ASTM F431-21
Standard Specification for Air Performance Measurement Plenum Chamber for Vacuum Cleaners
NORMA vydaná dňa 1.2.2021
Informácie o norme:
Označenie normy: ASTM F431-21
Dátum vydania normy: 1.2.2021
Kód tovaru: NS-1017429
Počet strán: 11
Približná hmotnosť: 33 g (0.07 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM F431-21 :
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.
Keywords:
air performance, orifice plate, plenum chamber, vacuum cleaner,, ICS Number Code 97.080 (Cleaning appliances)
K tejto norme patria tieto doplnky:
ASTM ADJF0431
Doplnok (príloha) k norme
Zobraziť všetky technické informácie
Adjunct to F431 Specification for Air Performance Measurement Plenum Chamber for Vacuum Cleaners
Vybraný formát: Anglicky - Tlačené (41.40 EUR)
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Doplňujúce informácie
| 1. Scope | ||||
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1.1?This specification covers the acceptable details and tolerances for the plenum chamber used in specified air performance measurement tests for vacuum cleaners. 1.2?The plenum chamber is designed for vacuum measurements only. (WarningThe 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.) 1.3?The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| 2. Referenced Documents | ||||
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