Hydrometry. Guidelines for the application of acoustic velocity meters using the Doppler and echo correlation methods Ingestion-build-205840 3) standards that use an

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BS EN 15558 specifies a method for the determination of nitrate and ammoniacal nitrogen with reduction according to Ulsch

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Hydrometry. Guidelines for the application of acoustic velocity meters using the Doppler and echo correlation methods Ingestion-build-205840 3) standards that use an1 Scope This International Standard provides guidelines on the principles of operation and the selection and use of Doppler based and echo correlation velocity meters for continuous flow gauging. This International Standard is applicable to channel flow determination in open channels and partially filled pipes using one or more meters located at fixed points in the cross section. NOTE A limitation of the techniques is that measurement is made of the