CONDUCTIVITY EFFECTS ON CAPACITANCE MEASUREMENTS OF 2-COMPONENT FLUIDS USING THE CHARGE TRANSFER METHOD
CONDUCTIVITY EFFECTS ON CAPACITANCE MEASUREMENTS OF 2-COMPONENT FLUIDS USING THE CHARGE TRANSFER METHOD
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DOI：
10.1088/0022-3735/21/6/003
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发表时间：
1988-06-01
期刊：
影响因子：
--
通讯作者：
BECK, MS
中科院分区：
文献类型：
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作者：
HUANG, SM;GREEN, RG;BECK, MS
研究了电荷转移法测量双组分流体电容时组分电导率的影响。根据电容传感器系统的电极结构和电极间混合物的类型，采用三种典型的等效电路模型来表示各种电容传感器系统。本文从理论上分析了导电元件对这些模型测量的影响，并用基于电荷转移法的电容传感器进行了实验验证。结果表明，采用导通电阻小、换相时间快的半导体开关控制传感器的充放电，可以减小电导效应。作为实际应用，描述了工业湿法喷丸工艺中水基导电浆料中玻璃珠浓度和油/水混合物中含水量的测量。
Describes an investigation into the effects of component conductivity on capacitance measurements of two-component fluids using the charge transfer method. Various capacitance sensor systems are represented using three typical equivalent circuit models according to their electrode configurations and the type of mixture between the electrodes. The effects of conductive elements on the measurement of these models are analysed theoretically and tested experimentally using a capacitance transducer based on the charge transfer method. It is shown that the conductance effects can be reduced by using semiconductor switches with low ON resistance and fast commutation time to control the charge and discharge of the sensor. Measurements of glass bead concentration in water-based conductive slurries from an industrial wet peening process and water contentin oil/water mixtures are described as practical applications.