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About This Item

 

Full Description

This document specifies the functional requirements of instrumentation for measuring the level of water surface (stage), primarily for the purpose of determining flow rates.

This document is supplemented by Annex A, which provides guidance on the types of automatic water level measurement devices currently available and the measurement uncertainty associated with them. The manually operated measuring devices are described in Annex B.

This document is applicable to both contact and non-contact methods of measurement. The non-contact methods are not in direct material contact with the water surface but measure the height of the water level with ultrasonic or electromagnetic waves.

 

Document History

  1. BS EN ISO 4373:2022

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    Hydrometry. Water level measuring devices

    • Most Recent
  2. BS EN ISO 4373:2008


    Hydrometry. Water level measuring devices

    • Historical Version
  3. BS 06/30092802 DC


    ISO 4373. Hydrometry. Water-level measuring devices

    • Historical Version
  4. BS 3680-7:2000


    Measurement of liquid flow in open channels-Specification of equipment for the measurement of water level

    • Historical Version
  5. BS 3680-9B:1981


    Methods of measurement of liquid flow in open channels. Water level instruments-Float-operated water level recorders (mechanical and electromechanical)

    • Historical Version
  6. BS 3680-7:1971


    Measurement of liquid flow in open channels-The measurement of liquid level (stage)

    • Historical Version
  7. BS 3680-9A:1971


    Methods of measurement of liquid flow in open channels. Water level instruments-Specification for the installation and performance of pressure actuated liquid level measuring equipment

    • Historical Version