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ASTM D1941-21

Current Revision

Standard Test Method for Open Channel Flow Measurement of Water with the Parshall Flume

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1.1 This test method covers measurement of the volumetric flowrate of water and wastewater in open channels with the Parshall flume.

1.1.1 Information related to this test method can be found in ISO 1438 and ISO 4359.

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.


5.1 Flume designs are available for throat sizes of 1 in. (2.54 cm) to 50 ft (15.2 m) which cover maximum flows of 0.2 to 3000 ft3/s (0.0057 to 85 m3/s) (1) and (2).4 They can therefore be applied to a wide range of flows, with head losses that are moderate.

5.2 The flume is self-cleansing for moderate solids transport and therefore is suited for wastewater and flows with sediment.

SDO ASTM: ASTM International
Document Number D1941
Publication Date Dec. 15, 2021
Language en - English
Page Count 11
Revision Level 21
Supercedes
Committee D19.07
Publish Date Document Id Type View
Dec. 15, 2021 D1941-21 Revision
Jan. 1, 2013 D1941-91R13 Reaffirmation
June 15, 2007 D1941-91R07 Reaffirmation
Jan. 1, 2001 D1941-91R01 Reaffirmation
Jan. 1, 2001 D1941-91R96 Reaffirmation