论文部分内容阅读
热敏电阻作测温用,因电源不稳必带来测量误差,要求测量人员根据测温精度合理、经济地选择或设计稳定电源(恒压源或恒流源)。本文结合本所最新研制的可互换线性热敏电阻组件详细地讨论了电测量中的误差,给出了误差计算的定量公式,并绘制了实测数据表与理论曲线图,提供了线性组件测温中排除电源不稳而带来的测温误差的办法,从而能充分利用线性组件的互换线性精度。本文还详细地讨论了负温系数热敏电阻作测温用在电测量中的误差,给出了误差表达式和实用计算公式,为使用者提供了误差分析的理论根据。
Thermistor for temperature measurement, due to unstable power measurement error will bring, require measurement personnel based on the temperature measurement accuracy, economical choice or design of stable power supply (constant voltage source or constant current source). In this paper, the latest interchangeable linear thermistor components developed by us are discussed in detail in the error of the electrical measurement. The quantitative formula of the error is given, and the measured data table and the theoretical curve are plotted. The linear component measurement Temperature in the exclusion of instability caused by temperature measurement error approach, which can take full advantage of linear components of the exchange of linearity accuracy. This paper also discusses in detail the error of the negative temperature coefficient thermistor used for temperature measurement in the electrical measurement, gives the error expression and the practical calculation formula, and provides the theoretical basis for the error analysis to the user.