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Standard Test Method for Open-Channel Flow Measurement of Water with Thin-Plate Weirs
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NORM herausgegeben am 15.12.2021
Bezeichnung normen: ASTM D5242-21
Ausgabedatum normen: 15.12.2021
SKU: NS-1049976
Zahl der Seiten: 8
Gewicht ca.: 24 g (0.05 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
flow measurement, open-channel flow, water discharge, weirs,, ICS Number Code 17.120.20 (Flow in open channels)
Significance and Use | ||||||
5.1?Thin-plate weirs are reliable and simple devices that have the potential for highly accurate flow measurements. With proper selection of the shape of the overflow section a wide range of discharges can be covered; the recommendations in this test method are based on experiments with flow rates from about 0.008 ft 3/s (0.00023 m 3/s) to about 50 ft 3/s (1.4 m 3/s). 5.2?Thin-plate weirs are particularly suitable for use in water and wastewater without significant amounts of solids and in locations where a head loss is affordable. |
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1. Scope | ||||||
1.1?This test method covers measurement of the volumetric flow rate of water and wastewater in channels with thin-plate weirs. Information related to this test method can be found in Rantz (1)2 and Ackers 1.2?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. 1.3?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 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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