Temperature Measurement of Coal Pipe of Coal Mills by a Modified Bridge Circuit
Karunamoy Chatterjee1, Tapan Maity2, Subrata Chattopadhyay3
1Karunamoy Chatterjee, Electronics & Communication Engineering Dept, Bankura Unnayani Institute of Engineering, Bankura, Member, IEI, INDIA.
2Tapan Maity,Electronics & Communication Engineering Dept, Bankura Unnayani Institute of Engineering, Bankura, Associate Member, IEI, INDIA.
3Subrata Chattopadhyay, Electrical Engineering Department, National Institute of Technical Teachers’ Training and Research, Saltlake City, Kolkata.
Manuscript received on July 12, 2019. | Revised Manuscript received on July 22, 2019. | Manuscript published on December 30, 2019. | PP: 27-32 | Volume-9 Issue-2, December, 2019. | Retrieval Number: A1161109119/2019©BEIESP | DOI: 10.35940/ijeat.A1161.129219
Open Access | Ethics and Policies | Cite | Mendeley
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: TIn our earlier work we proposed a method to measure the temperature of the coal pipe of Coal Mills in PF Boiler by a continuous basis, In order to achieve, accurate measurements of coal pipe temperature, using the resistive transducers like resistance temperature detector (RTD), the small resistance changes linearly with temperature, but resistance measurement by using RTD using normal Wheatstone bridge circuit would have errors for the stray capacitance presents in between bridge nodal points and the ground. Hence, by the use of a modified operational amplifier based Wheatstone bridge network, these effects can be minimized. The bridge performance has been studied experimentally with RTD. It has been observed good linearity, repeatability and variable sensitivity over the wide range of temperature.
Keywords: RTD, stray capacitance, op amp based bridge network.