文献类型：期刊文献

英文题名：Research and analysis of a portable precision temperature sensor

作者：Yao, Hai Qing[1]; Cao, Heng[1]; Jiang, Fei[1]; Sun, Bo[1]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2014

卷号：945-949

起止页码：1924

外文期刊名：Advanced Materials Research

收录：EI(收录号：20142717896673)

语种：英文

外文关键词：Uncertainty analysis - Manufacture - Resistors - Temperature measurement

摘要：Based on the excellent performance of Pt100, a portable low-cost precision temperature sensor has been designed, whose core chips are REF03, AD8603, AD7788 and precision resistors. Constant current source (CCS) for 4-wire Pt100 is constituted by REF03, AD8603 and precision resistors. AD7788 measures the differential signal on Pt100 and suppresses the common mode interference signal. Analysis software running on the micro control unit (MCU) filters the digital code from AD7788, and then calculates the current temperature value according to the resistance-temperature mathematical model of Pt100. Analysis and experimental results show that the temperature measurement accuracy of the sensor can reach ±1°C within the range of 0°C-650°C. ? (2014) Trans Tech Publications, Switzerland.