A Platinum Resistance Bridge Thermometer

DOI

10.2991/ifeesd-16.2016.71How to use a DOI?

Keywords

Pt100. Bridge Circuit. Linear Temperature Measurement. Reference Table

Abstract

A platinum resistance bridge thermometer is introduced. It implements linear temperature measurement in -200~850 degrees with a bridge circuit. It consists of bridge circuit, multi-channel switches, amplifier, AD574, display, COM port, precision power supply, 89C51 etc. After the analysis of bridge circuit characteristic, a method is presented that the platinum resistance value is obtained by computing the current ratio of tow bridge circuit loop and then looking into the Pt100 reference table to obtain the measured temperature. So the linear temperature measurement is implemented without nonlinear compensation. The measurement error is less than 1.5 degrees.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ximin Liu
PY  - 2016/05
DA  - 2016/05
TI  - A Platinum Resistance Bridge Thermometer
BT  - Proceedings of the 2016 International Forum on Energy, Environment and Sustainable Development
PB  - Atlantis Press
SP  - 408
EP  - 412
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesd-16.2016.71
DO  - 10.2991/ifeesd-16.2016.71
ID  - Liu2016/05
ER  -