论文部分内容阅读
本文系统地描述了电子电桥式热敏电阻温度计的参数设计方法和概要分析。这类电桥具有惠斯登热敏电阻测温电桥那样宽的测温范围和线性化的输出特性。灵敏度比惠斯登电桥高一倍左右,精度达±0.1～0.2℃。可实现电压、电流和频率三种信号输出。输出信号电平高,可直接配直读式仪表作温度显示。可采用热敏电阻同固定电阻串、并联的等值网络实现热敏电阻的互换。
This article systematically describes the electronic bridge thermistor thermometer parameter design method and summary analysis. This type of bridge has a wide temperature range and linearized output characteristics of the Wheatstone thermistor bridge. Sensitivity than Wheatstone bridge about double the accuracy of ± 0.1 ~ 0.2 ℃. Can achieve voltage, current and frequency of three kinds of signal output. Output signal level is high, can be directly equipped with direct reading instrument for temperature display. Thermistor can be used with a fixed resistor string, parallel equivalent network to achieve the exchange of thermistors.