AWWA C751 2019 R2023

$76.92

AWWA C751-19(R23) Magnetic Inductive Flowmeters

Published By	Publication Date	Number of Pages
AWWA	2019	28

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Category: AWWA

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The purpose of this document is to review magnetic inductive flowmeter (magmeter) principles of operation, calibration, and selection. Magnetic inductive flowmeters or electromagnetic flowmeters are commonly called magmeters. The flowmeter referenced in this standard will be called a magmeter or magnetic flowmeter interchangeably. Magmeters are available in wafer style and threaded and flanged-end connection designs. These spool/tube design flowmeters are most commonly used in the water industry. This standard will focus on magmeters of this design. This standard does not apply to the insertion type of magmeter. This standard does not address specific issues where a magmeter would be used in revenue service.

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PDF Pages	PDF Title
7	Foreword I. Introduction. I.A. Background. The first water meter that was produced in the United States was thought to be a positive displacement meter that was fabricated in 1857. Since then, a number of other technologies and designs have been introduced to the water industry, e I.B. History. In 2007, the AWWA Standards Subcommittee on Magnetic Devices, a subcommittee of the AWWA Standards Committee on Rate Type Flowmeters, completed a Committee Report on Magnetic Inductive Flowmeters. The report was published in the June 2007 is I.C. Acceptance. In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by NSF International (NSF) to develop voluntary third-party consensus standards and a certification program for direct
8	II. Special Issues. This standard is different in format from other AWWA standards that contain specific requirements for material, dimensions, workmanship, and other physical requirements. Different magnetic inductive flowmeters employ different material II.A. Chlorine and Chloramine Degradation of Elastomers. The selection of materials is critical for water service and distribution piping in locations where there is a possibility that elastomers will be in contact with chlorine or chloramines. Documented
9	III. Use of This Standard. It is the responsibility of the user of an AWWA standard to determine that the products described in that standard are suitable for use in the particular application being considered. III.A. Purchaser Options and Alternatives. The following information should be provided by the purchaser: III.B. Modification to Standard. Any modification to the provisions, definitions, or terminology in this standard must be provided by the purchaser. IV. Major Revisions. Major revisions made to the standard in this edition include the following:
11	AWWA Standard SECTION 1: GENERAL Sec. 1.1 Scope Sec. 1.2 Purpose Sec. 1.3 Application
13	SECTION 2: REFERENCES SECTION 3: DEFINITIONS
14	SECTION 4: REQUIREMENTS Sec. 4.1 Materials Sec. 4.2 Principles of Operation
16	Sec. 4.3 Flowmeter Components
18	Sec. 4.4 Performance Issues
19	Sec. 4.5 Impacts on Performance
22	SECTION 5: VERIFICATION Sec. 5.1 Calibration Methods
23	Sec. 5.2 Field-Verification Techniques Sec. 5.3 Calibration Traceability
24	Sec. 6.2 Affidavit of Compliance
25	Purchaser Options