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  • BSI
    BS ISO 11657:2014 Hydrometry. Suspended sediment in streams and canals. Determination of concentration by surrogate techniques
    Edition: 2014
    $411.69
    / user per year

Description of BS ISO 11657:2014 2014

This International Standard specifies methods for determination of the concentrations and particle-size distributions of suspended sediment in streams and canals by surrogate techniques. Methods based on bulk-optical principle of water such as transmission and nephelometry are the most commonly used surrogates for determining suspended sediment concentrations (SSC). Instruments and techniques based on acoustic attenuation and/or acoustic backscatter principles are also in use for measurement of suspended sediment concentration. Instrumentation based on the laser diffraction principle is also used for the measurement of particle size distribution. This International Standard covers brief description of the operating principle of each method and details of some of the instruments available.

The detailed method and principle of optical and acoustical transmission, nephelometry, and optical back scatter (OBS), laser diffraction technique (LD) and acoustic back scatter technique (ABS) with their limitations are described in Annex A, Annex B and Annex C respectively.



Standard NumberBS ISO 11657:2014
TitleHydrometry. Suspended sediment in streams and canals. Determination of concentration by surrogate techniques
StatusConfirmed
Publication Date2014-09-30
Identical National Standard OfISO 11657:2014
DescriptorsError analysis, Velocity measurement, Flow rates, Seawater, Liquid flow, Estimation, Rivers, Tides, Single, Tidal channels, Selection, Hydrology, Liquid-level measurement, Continuous, Field testing, Flow, Hydrometry, Channel flow, Flow measurement, Volume measurement, Water, Depth measurement, Tidal currents
ICS17.120.20 Flow in open channels
CommitteeCPI/113
ISBN978 0 580 75617 7
PublisherBSI
Pages32

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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