Capacitive sensor and its calibration- A technique for the estimation of solid particles flow concentration

Usama Abrar,Nasif R Jaffri,Qin Li,Liu Shi,Hassan R Sindhu,Mian W Omar

doi:10.1088/1742-6596/1311/1/012046

Abstract

The precise and accurate measurement of flow rate in the batch flow of the solid particles is of primary importance in many process industries for the improvement of the efficiency of the system. Many techniques developed for the measurement of mass flow rate. The capacitive sensors has a significance of being non-invasive, higher accuracy and low cost for mass flow measurement despite the fact that many factors adversely affect the performance- including non-uniform flow, multiphase flow, temperature, pressure, and moisture in the solid particles. This paper covers preliminary investigations of the offline estimation of mass flow concentration based upon the calibration of capacitance electrodes to quantify the mass of dielectric as a function of capacitance variation between the electrodes.

Highlights

The batch flow of solid particles finds its application in many process industries including food, chemical and thermal [1]
In order to improvise the quality of the product and the efficiency of the manufacturing process, there is always a need for the online monitoring, data logging and control of the pneumatic conveying operations- the precise and accurate measurement of the flow parameters among which mass flow rate, flow pattern and mass of solid are of primary significance[4,5]
Optical sensing, acoustic techniques, radiometric methods, electrostatic sensors, and capacitive sensors used for the measurement of Gas/Solid particles flow rate measurement [6,7]

Summary

Introduction

The batch flow of solid particles finds its application in many process industries including food, chemical and thermal [1]. Many techniques developed for the measurement of mass flow rate. The capacitive sensors has a significance of being non-invasive, higher accuracy and low cost for mass flow measurement despite the fact that many factors adversely affect the performance- including non-uniform flow, multiphase flow, temperature, pressure, and moisture in the solid particles.

Results

Conclusion