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prEN 17694-1

Hydrometry - Performance requirements and test procedures for water monitoring equipment - Devices for the determination of flow Part 1: Open channel instrumentation

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prEN 17694-1
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This European standard specifies general requirements, minimum performance requirements and test procedures for open channelinstrumentation used to determine either volumetric flow-rate and/or total volume passed of waters in artificial open channels. Itcovers the following technology categories: −Level sensors with associated electronics designed to be used with a conventional gauging structure (e.g. weir or flumefor which the stage discharge characteristics are established and published in a national or international standard) or afluid velocity sensor. −Integrated velocity area devices comprising level and velocity sensors that may be separate or combined in a single assembly; −Velocity sensors that determine the mean water velocity through a channel. It is recognised that for some OCIs certain tests cannot be carried out.
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