Research on error of Pt resistor temperature measurement system based on heat transfer equation

ZHANG Li-li1; HE Xiao-lei2; LU Wei3

doi:10.13873/j.1000-97872012.11.012

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Research on error of Pt resistor temperature measurement system based on heat transfer equation

更新时间：2025-09-11

- Research on error of Pt resistor temperature measurement system based on heat transfer equation
- Vol. 31, Issue 11, Pages: 36-39(2012)
- 作者机构：
  
  1. 南京信息工程大学
  2. 中国气象局气象探测中心
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872012.11.012
  CLC： TM54
- Published：2012
- 稿件说明：
移动端阅览
[1]张莉莉,贺晓雷,卢为.基于传热方程的铂电阻器测温系统误差研究[J].传感器与微系统,2012,31(11):36-39.

ZHANG Li-li1, HE Xiao-lei2, LU Wei3. Research on error of Pt resistor temperature measurement system based on heat transfer equation[J]. 2012, 31(11): 36-39.
[1]张莉莉,贺晓雷,卢为.基于传热方程的铂电阻器测温系统误差研究[J].传感器与微系统,2012,31(11):36-39. DOI： 10.13873/j.1000-97872012.11.012.

ZHANG Li-li1, HE Xiao-lei2, LU Wei3. Research on error of Pt resistor temperature measurement system based on heat transfer equation[J]. 2012, 31(11): 36-39. DOI： 10.13873/j.1000-97872012.11.012.

摘要

针对铂电阻器自热效应这一现象

通过理论分析铂电阻器在温度测量中所产生的误差。由此提出一种实验方法进行系统误差研究。铂电阻器测温环境是有限空间的空气罐

罐内压力控制在500～1 013 hPa

液体槽温度控制在-70～80℃之间。罐内的流体视为自然流动的N2与O2的二元混合气体。利用传热学分析热量传递过程中能量耗散关系、热流密度分布状态以及混合气体的热物理性质

通过建立数学模型

运用Matlab进行仿真运算。结果表明:在上述温度、压力和微小电流的条件下

铂电阻器测温结果中存在-0.4～0.6℃误差。

Abstract

Aiming at phenomenon of Pt resistor self-heating effect

error of Pt resistor in temperature measurement is analyzed by theory and an experimental method is proposed to carry out study on system error.Temperature testing environment of Pt resistor is a air tank with limited space

the tank pressure is set 500～ 1 013 hPa

and the temperature of the reservoir is set-70～ 80 ℃.The fluid in the tank is regarded as mixture gas of N2 and O2 which flow naturally.The algorithm establishes a mathematical model by the analysis of the energy dissipation relationship in heat transfer process with the heat transfer theory

the heat flux distribution and mixed air thermophysical properties.By setting up math model

simulation operations are carried out by Matlab.Experimental results show that the error which exists in the measurement of Pt resistor-0.4～ 0.6 ℃ under the conditions of temperature

pressure and weak current that are mentioned above.

关键词

Keywords

references

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