Hydrometry. Liquid flow measurement using end depth method in channels with a free overfall Ingestion-build-95349 Note 3: BS EN 61143-1

Note 3: BS EN 61143-1 does not contain requirements concerning the dimensions of instruments or accessories (for the former

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BS EN ISO 8062-1:2007 replaces BS 6615:1996

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Hydrometry. Liquid flow measurement using end depth method in channels with a free overfall Ingestion-build-95349 Note 3: BS EN 61143-11 Scope This document specifies a method for the estimation of the sub critical flow of clear water in a smooth, essentially horizontal channel (or a gently sloping channel), abruptly discontinued at bottom by a hydraulic structure, with a vertical drop and discharging freely. Such an overfall forms a control section and offers a means for the estimation of flow using the end depth measurement method. A wide variety of channel cross sections with