Paper Title:
Capacitance Automatic Measurement Method of the Thickness of Liquid Film on Plat Form
  Abstract

The thickness of water film is an important parameter in the field of chemical industry. Water film is formed by the flowing water, which flows through a narrow channel. So it is difficult to use contact gauges to measure the water film because it’s flowing so fast that if it is touched, the thickness will be changed. A low-cost and high precision non-contact measurement method—capacitive sensor is used as the sensor of the thickness of water film, virtual instrument is used to analyze the measurement state. In contrast to the conventional stand-alone instruments, a PC based virtual instrument for the measurement of water film is proposed in this paper. Based on on-line measurement theory, real time voltages should be collected to PC. These voltages will be computed by formulas in Labview and the real time data of thickness will be plotted on the screen. If bad signal got, it will give error alarm. The method of the measurement of water film can save a lot of fees of research and applications, and be easy to apply in other measurement and control fields. The basic principle and working process of capacitive micrometer, denoise method, the method of capacitive calibration, virtual instrument data acquisition system and on-line measurement of water film, will be further discussed in this paper.

  Info
Periodical
Key Engineering Materials (Volumes 381-382)
Edited by
Wei Gao, Yasuhiro Takaya, Yongsheng Gao and Michael Krystek
Pages
157-160
DOI
10.4028/www.scientific.net/KEM.381-382.157
Citation
S. X. Xu, B. Wang, Y. Z. Zheng, "Capacitance Automatic Measurement Method of the Thickness of Liquid Film on Plat Form ", Key Engineering Materials, Vols. 381-382, pp. 157-160, 2008
Online since
June 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Ke Zhang, Han Pin Luo
Abstract:Computer stereo vision has been paid high attention in areas such as industry measurement and automatic control. Calibration of stereo vision...
372
Authors: Yu Bao Fan, Jie Li, Bo Wang, Xiao Chun Tian, Jun Liu
Chapter 8: Industrial Mechanics
Abstract:When the Micro Inertial Measurement Unit is been placed randomly in the case of stationary, the sum vectors that measured by the inertial...
1140
Authors: Jian Zhang, Bin Zhen Zhang, Chang Hong Ji, Jian Lin Liu, Xiang Hong Li
Chapter 6: Functional Materials
Abstract:With the development of modern industrial society, the need of measuring the pressure parameters at the ultra-low temperature is proposed....
698
Authors: Li Chao Xu, Ru Hai Ge
Chapter 8: Measurement
Abstract:Transmission load was one of the important parameters for engineering vehicle powertrain system, on the basis of calculating drive shaft...
2019
Authors: Ya Nan Wang, Dong Ming Li, Yun Xian Cui, Rasidi Ibrahim
Chapter 3: Material Engineering and Science
Abstract:In cutting temperature survey, in order to reflect the temperature change of cutting area accurately, the cutting tool sensor should have...
3578