摘要
固体和液体 (分离相 )悬浮液因为具有触变性和非 Newtonian性 ,要测量粘度是很困难的。本研究设计了一种具有独立陀螺锥板转子结构的新型粘度计。它使用光电元件，非接触地测量锥板转子角速度的时间函数。基于 LabVIEW平台的虚拟仪器则用以进行数据采集和处理 ,微分求解出角加速度和样品的粘度。由于独立的陀螺转子结构 ,摩擦误差减小到可以忽略。标定和测量表明 ,粘度计标准误差在 2％以下。它特别适用于污泥 ,乳化液和血液之类样品表观粘度的测定。
The measurement of viscosity for liquid samples containing suspended solids, suspended (separate－ phase) liquids is difficulty, as the non－ Newtonian and thixotropic property. Herein, we present the design of a new viscometer that has an independent top cone. A photo－ cell is used to measure the top cone's angular speed,ω , as a function of time. Virtual instrument on LabVIEW is used for data collection and processing. Then the angular acceleration and viscosity is calculated by difference equations. There are negligible frictional forces on the top cone due to its independent structure. Calibration and measuring processes indicate that standard error is less than 2％ . It is mostly suitable for the measurement of apparent viscosity of the samples, such as sludge, emulsion and blood.
出处
《安徽工业大学学报（自然科学版）》
CAS
2001年第4期277-282,共6页
Journal of Anhui University of Technology（Natural Science）
基金
国家留学基金委资助项目( 99834017)
关键词
表观粘度
测定
虚拟仪器
粘度计
non－ Newtonian
apparent viscosity
measurement
virtual instrument
