Accurate mass replacement method for the sediment concentration measurement with a constant volume container
Ban, Yunyun1; Chen, Tianqin1; Yan, Jun3; Lei, Tingwu1,2
Corresponding AuthorLei, Tingwu(leitingwu@cau.edu.cn)
AbstractThe measurement of sediment concentration in water is of great importance in soil erosion research and soil and water loss monitoring systems. The traditional weighing method has long been the foundation of all the other measuring methods and instrument calibration. The development of a new method to replace the traditional oven-drying method is of interest in research and practice for the quick and efficient measurement of sediment concentration, especially field measurements. A new method is advanced in this study for accurately measuring the sediment concentration based on the accurate measurement of the mass of the sediment-water mixture in the confined constant volume container (CVC). A sedimentladen water sample is put into the CVC to determine its mass before the CVC is filled with water and weighed again for the total mass of the water and sediments in the container. The known volume of the CVC, the mass of sediment-laden water, and sediment particle density are used to calculate the mass of water, which is replaced by sediments, therefore sediment concentration of the sample is calculated. The influence of water temperature was corrected by measuring water density to determine the temperature of water before measurements were conducted. The CVC was used to eliminate the surface tension effect so as to obtain the accurate volume of water and sediment mixture. Experimental results showed that the method was capable of measuring the sediment concentration from 0.5 up to 1200 kg m(-3). A good liner relationship existed between the designed and measured sediment concentrations with all the coefficients of determination greater than 0.999 and the averaged relative error less than 0.2%. All of these seem to indicate that the new method is capable of measuring a full range of sediment concentration above 0.5 kg m(-3) to replace the traditional oven-drying method as a standard method for evaluating and calibrating other methods.
Keywordsediment concentration replacement method constant volume container (CVC) temperature measurement error correction
Indexed BySCI
Funding ProjectNational Natural Science Foundation of China[41230746] ; National Natural Science Foundation of China[51321001]
Funding OrganizationNational Natural Science Foundation of China
WOS Research AreaEngineering ; Instruments & Instrumentation
WOS SubjectEngineering, Multidisciplinary ; Instruments & Instrumentation
WOS IDWOS:000395893100001
Citation statistics
Document Type期刊论文
Corresponding AuthorLei, Tingwu
Affiliation1.China Agr Univ, Coll Water Resources & Civil Engn, Beijing 100083, Peoples R China
2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi Provinc, Peoples R China
3.Beijing South To North Water Divers, Daning Management Off, Beijing 102442, Peoples R China
Recommended Citation
GB/T 7714
Ban, Yunyun,Chen, Tianqin,Yan, Jun,et al. Accurate mass replacement method for the sediment concentration measurement with a constant volume container[J]. MEASUREMENT SCIENCE AND TECHNOLOGY,2017,28(4):7.
APA Ban, Yunyun,Chen, Tianqin,Yan, Jun,&Lei, Tingwu.(2017).Accurate mass replacement method for the sediment concentration measurement with a constant volume container.MEASUREMENT SCIENCE AND TECHNOLOGY,28(4),7.
MLA Ban, Yunyun,et al."Accurate mass replacement method for the sediment concentration measurement with a constant volume container".MEASUREMENT SCIENCE AND TECHNOLOGY 28.4(2017):7.
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