Study of a modified non-contact Hall sensor-based flow transducer using centrifugal and momentum force principle

Sirshendu Saha; Saikat Kumar Bera; Saurabh Pal; Satish Chandra Bera

doi:10.1016/j.isatra.2021.02.026

Study of a modified non-contact Hall sensor-based flow transducer using centrifugal and momentum force principle

ISA Trans. 2022 Jan:119:242-251. doi: 10.1016/j.isatra.2021.02.026. Epub 2021 Feb 16.

Authors

Sirshendu Saha¹, Saikat Kumar Bera², Saurabh Pal³, Satish Chandra Bera⁴

Affiliations

¹ Department of Applied Electronics and Instrumentation Engineering, Academy of Technology, Aedconagar, Adisaptagram, Hooghly 712121, India. Electronic address: sirshendueie@gmail.com.
² Department of Electronics & Communication Engineering, Chaibasa Engineering College, Jharkhand 833201, India. Electronic address: skb392@rediffmail.com.
³ Instrumentation Engineering Section, Department of Applied Physics, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India. Electronic address: spal76@gmail.com.
⁴ Instrumentation Engineering Section, Department of Applied Physics, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India. Electronic address: scbera_cal52@rediffmail.com.

PMID: 33632601
DOI: 10.1016/j.isatra.2021.02.026

Abstract

The paper describes a modified non-contact Hall sensor based centrifugal and momentum force type flow transducer with simple design, low cost and rugged construction. In this transducer two identical permanent magnets are fixed on the two ends of the common balance lever on which sensing U-tube and dummy U-tube are placed at equal distances from the pivot. The movement of lever ends with variation of flow rate, changes the magnet positions with respect to the two identical Hall sensors fixed at two locations just below the magnets. Thus the outputs of the Hall sensors supplied from a stabilized DC source vary with the variation of flow rate. The difference between these outputs is a DC voltage signal non-linearly related with flow rate.

Keywords: Centrifugal force; Flow transducer; Hall sensor; Momentum force; Permanent magnet.