BS 3680-4A(1981) : 1981被替代
METHODS OF MEASUREMENT OF LIQUID FLOW IN OPEN CHANNELS - WEIRS AND FLUMES - METHOD USING THIN-PLATE WEIRS
出版：British Standards Institution
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基本信息
标准编号： BS 3680-4A(1981) : 1981
发布时间：1981/1/1 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：44
标准简介
Gives methods for measuring water flow in open channels using rectangular and triangular-notch thin-plate weirs. The conditions considered are limited to steady, free and fully ventilated discharge. Recommended discharge coefficients are applicable to water only in the approximate range of temperatures from 5 to 30 degrees C. Using the coefficients for water temperatures several degrees outside this range will result in negligible error except at very small heads. Limitations of applicability related to weir and flow geometry are specified for the recommended formulae.
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