Hydrometric determinations. Flow measurements in open channels using structures. Guidelines for selection of structure Ingestion-build-225643 BS EN IEC 60869‑1 also

BS EN IEC 60869‑1 also describes the optical power limiter (see Figure 4) is a passive device that regulates the optical power in fibres

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Hydrometric determinations. Flow measurements in open channels using structures. Guidelines for selection of structure Ingestion-build-225643 BS EN IEC 60869‑1 also1 Scope This document gives guidelines for selecting a particular type of flow measuring structure for measuring liquid flow in an open channel. It describes how the individual structures function in simple non technical terms, and sets out the factors and parameters to take into account in order to make an informed decision on which type of structure to use. Values of the relevant parameters describing the limitations and uncertainty involved in the