Evaluating wiring Configurations for RTD Sensor in Temperature Measurement

Anjali Rai*, Deepak Yadav**
*Department of Electronics Engineering, Indian Institute of Technology (ISM), Dhanbad, Jharkhand, India.
**Directorate of Flight Instrumentation, Research Centre Imarat, Hyderabad, Telangana, India.
Periodicity:September - November'2019
DOI : https://doi.org/10.26634/jele.10.1.16422

Abstract

This article compares the accuracy achieved by the various Resistance Temperature Detector (RTD) configurations using the MAX31865 device. This design offers an interface for PT100 RTD using MAX31865 RTD to digital converter. The RTD is connected to the anti-aliasing filter and the filter output is converted into a digital signal using the MAX31865 device. The final temperature readout is monitored on the computer for validation. The proposed temperature sensor interfacing can be utilized in multi-channel temperature measurement in the telemetry systems. RTD sensor configurations with 2, 3 and 4 wires are evaluated and accurate results are obtained in 4 wire configuration. Furthermore, in this sensor interfacing Serial Peripheral Interface (SPI) output requires only one micro-controller unit, which reduces the circuit complexity and power requirement to a great extent.

Keywords

PT100 RTD, MAX31865, Temperature Measurement, RTD Configuration, Temperature Sensor.

How to Cite this Article?

Rai, A., & Yadav, D. (2019). Evaluating wiring Configurations for RTD Sensor in Temperature Measurement. i-manager's Journal on Electronics Engineering, 10(1), 1-7. https://doi.org/10.26634/jele.10.1.16422

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