{"id":4643,"date":"2024-09-13T08:42:56","date_gmt":"2024-09-13T08:42:56","guid":{"rendered":"https:\/\/www.bmagmeter.com\/?p=4643"},"modified":"2026-05-15T13:32:20","modified_gmt":"2026-05-15T05:32:20","slug":"water-meter-anti-magnetic-testing-methods-and-standards-a-global-perspective","status":"publish","type":"post","link":"https:\/\/www.bmagmeter.com\/tr\/water-meter-anti-magnetic-testing-methods-and-standards-a-global-perspective\/","title":{"rendered":"How to Test the Magnetic Resistance of Water Meter?\u200b – Anti-Magnetic Water Meter"},"content":{"rendered":"

As a seasoned expert in the water meter industry, BMAG witnessed the evolution of Water Meter Anti-Magnetic Testing Methods and Standards. This article delves into the critical aspects of these standards and their implementation across the globe.<\/p>\n\n\n\n

Origins of Anti-Magnetic Standards for Water Meters<\/strong><\/h2>\n\n\n\n

The establishment of anti-magnetic standards for water meters emerged in the mid to late 20th century when magnetic interference became a significant threat to water meter accuracy. As permanent magnet technology advanced, some individuals began using strong magnetic fields to interfere with water meter operations, leading to inaccurate measurements and substantial losses for water utilities.<\/p>\n\n\n\n

In response to this challenge, water meter standard-setting bodies worldwide began to focus on and research anti-magnetic technologies.<\/p>\n\n\n\n

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“All water meters where the mechanical components may be influenced by a static magnetic field (e.g. equipped with a magnetic coupling in the drive to the readout or with a magnet-driven pulse output) and all meters with electronic components shall be tested to show that they are able to withstand the influence of a static magnetic field.”<\/em>
— Quote from ISO 4064-2-2014 – 7.12 Magnetic field testing<\/p>\n<\/blockquote>\n\n\n\n

This quote underscores the importance of Water Meter Anti-Magnetic Testing Methods in ensuring meter reliability.<\/p>\n\n\n\n

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Problems Addressed by Anti-Magnetic Standards<\/strong><\/h2>\n\n\n\n
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  • Improved Measurement Accuracy: Preventing external magnetic fields from interfering with normal water meter operation<\/li>\n\n\n\n
  • Reduced Water Resource Waste: Curbing water theft through magnetic interference<\/li>\n\n\n\n
  • Protection of Water Utility Interests: Ensuring the accuracy of water fee collection<\/li>\n\n\n\n
  • Enhanced Water Meter Reliability: Extending meter lifespan and reducing maintenance costs<\/li>\n<\/ul>\n\n\n\n

    Comparison of Major Global Water Meter Anti-Magnetic Standards<\/strong><\/h2>\n\n\n\n

    European Standard (EN 14154-3):<\/h3>\n\n\n\n

    Requirement: “The water meter shall be able to withstand a magnetic field of 100 kA\/m \u00b1 5 % applied for 15 minutes without showing any deformation, malfunction, or change in its metrological characteristics.”<\/p>\n\n\n\n

    International Standard (ISO 4064-2:2014):<\/h3>\n\n\n\n

    Requirement: “The water meter shall withstand a magnetic field with a magnetic flux density of at least 100 mT, generated by a permanent magnet with a surface area of 1000 mm\u00b2 \u00b1 10 %, applied to the most sensitive locations on the meter’s surface for a period of 1 min.”<\/p>\n\n\n\n

    \"Water
    Water Meter Anti-Magnetic Testing<\/figcaption><\/figure>\n\n\n\n

    American Water Works Association Standard (AWWA C700 series):<\/h3>\n\n\n\n

    Requirement: “Meters shall be able to withstand an external magnetic field of 3,000 Gauss without damage to the meter or a change in accuracy of more than 1.5 percent.”<\/p>\n\n\n\n

    Standards Commonalities:<\/strong><\/h2>\n\n\n\n

    Although the interference magnetic field strength requirements vary among standards, all standards emphasize that external magnetic fields should not affect the meter’s measurement accuracy. Testing methods generally employ permanent magnets or electromagnetic devices. Standards require comparison of measurement errors before and after applying magnetic fields, most other requirements are similar, aside from the magnetic field strength.<\/p>\n\n\n\n

    Detailed Water Meter Anti-Magnetic Testing Method<\/strong><\/h2>\n\n\n\n
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