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BS EN 60811-606 on methods for determining the density is relevant to:
This International Standard specifies a method for the determination of the volume flow-rate in a closed conduit by means of the velocity-area method using propeller-type current-meters under the following conditions:
Nomenclature of processes and reference numbers
Uncertainty of assessment
Fibre optic active components and devices. Performance standards - General and guidance Ingestion-build-64721 BS EN 60811-606 on methods1 Scope This part of IEC 62149 provides references, definitions and rules for creating active fibre optic device performance standards, as well as related information pertinent to the subject. Subsequent parts of IEC 62149 are sequentially numbered and contain performance criteria for specific applications. Each part will be added as the performance criteria become standardised for international use.