共找到 565 条与 明渠中流量的测量 相关的标准,共 38 页
Specifies a method for the estimation of subcritical flow of clear water in smooth, essentially horizontal, straight open channels with a vertical drop and discharging freely. Gentle positive slopes not greater than 1 in 2000 are admissible. Covers channels with the following types of cross-section, the nappe being confined: a) trapezoidal; b) triangular; c) parabolic; d) circular.
Measurement of liquid flow in open channels by weirs and flumes; End depth method for estimation of flow in non-rectangular channels with a free overfall (approximate method)
Gives functional requirements of sounding and suspension equipment used in the direct measurement of depth and velocity of flow in open channels, including the collection of sediment samples.
Measurement of liquid flow in open channels - Measuring instruments and equipment - Recommendations for direct depth sounding and suspension equipment
이 규격은 전체 담금으로 측정하는 온도 범위가 -30도 - +360도이며, 액체를 봉입한
Etched-stem liquid-in glass thermometer
Determination of concentration or density of Suspended and deposited sediment in water bodies by Radiometric Methods
Hydrometry — Stream gauging — Part 1: Fieldwork
Hydrometry — Stream gauging — Part 2: Computation of discharge
Hydrometry — Low cost baffles to aid fish passage on triangular profile gauging weirs
Liquid flow measurement in open channels — Cup-type and propeller-type current-meters — Amendment 1
Liquid flow measurement in open channels by weirs and flumes. End-depth method for estimation of flow in rectangular channels with a free overfall.
Water flow measurement in open channels using thin-wall weir.
Specifies functional requirements of sounding and suspension equipment used in the direct measurement of depht and velocity of flow in open channels, including the collection of sediment samples. Does not apply to indirect methods such as echo sounding. This second edition cancels and replaces the first edition (1975).
Liquid flow measurement in open channels; Direct depth sounding and suspension equipment
Deals with the measurement of flow in rivers and artificial channels under steady or slowly varying flow conditions, using certain types of standing-wave (or critical depth) flumes. An annex gives the guidelines for the selection of weirs and flumes for the measurement of the discharge of water in open channels.
Liquid flow measurement in open channels; Rectangular, trapezoidal and U-shaped flumes
Summarizes the results of investigations of the total error in measurements of flow by velocity-area methods. Describes the procedure used and types of errors (section one), and gives recommendation for the collection of data for investigations of errors (section two) with a view to supplementing the information given in ISO 1088.
Liquid flow measurement in open channels; Velocity-area methods; Investigation of total error
Liquid flow measurement in open channels — Round-nose horizontal crest weirs
Liquid flow measurement in open channels — Flat-V weirs
Liquid flow measurement in open channels — Dilution methods for measurement of steady flow — Part 3: Constant rate injection method and integration method using radioactive tracers
Liquid flow measurement in open channels — Part 2: Determination of the stage-discharge relation
Liquid flow measurement in open channels — Part 1: Establishment and operation of a gauging station
Specifies the installation, head measurement and assessment of the accuracy of discharge formulae for 2 types of weir - rectangular thin-plate and triangular notch thin-plate weirs. Also covers the assessment of the accuracy of discharge measurement.
Methods of measurement of liquid flow in open channels - Weirs and flumes - Method using thin-plate weirs
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