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本文介绍一种改进的复合温度传感器。该传感器由两只不同阻值的热敏电阻（ＮＴＣ）密封于同一根中、小号医用注射针（直径２ｍｍ以内）端构成；利用不同电阻的阻值－温度特性进行串并联组合可获得较好的测温线性度（在０５０℃量程内非线性偏差＜２．５％）；经标定，测温精度可达±０．１℃；虽然本文示例的传感器是为医学临床穿刺和肿瘤热疗等测温而设计的，但适当调整参数也可广泛用于工业生产中细管、盲孔等凡需点温监测或控制的深奥部位。
This article describes an improved composite temperature sensor. The sensor consists of two different resistance thermistor (NTC) sealed in the same root, small medical needles (diameter 2mm or less) end composition; resistance using different resistance - temperature characteristics of the series-parallel combination can be obtained more Good linearity of temperature measurement (non-linear deviation within the range of 0 ~ 50 ℃ <2.5%); After calibration, the accuracy of temperature measurement can reach ± 0.1 ℃. Although the sensor in this paper is for medical clinical puncture and tumor Hyperthermia and other temperature measurement and design, but the appropriate adjustment parameters can also be widely used in industrial production of thin tubes, blind holes and other temperature monitoring or point to be monitored or esoteric parts.