论文部分内容阅读
一前言在测温技术中,利用电阻温度计进行测量具有不少优越性。因为它的灵敏度高,测温范围广,准确性好。利用电阻温度计进行测温的原理是基于:物质的电阻在温度发生变化时也相应改变的性质。实验证明大多数纯金属从0℃加热到100℃其电阻增加40％;即增加1℃时电阻值要增加0.4～0.6％。一般的计量单位和一些实验室为了准确的进行温度测量,大多使用标准铂电阻温度计。
A preface In the temperature measurement technology, the use of resistance thermometer measurement has many advantages. Because of its high sensitivity, a wide temperature range, accuracy is good. The principle of temperature measurement using a resistance thermometer is based on the fact that the resistance of a substance changes accordingly when the temperature changes. Experiments show that most pure metals from 0 ℃ to 100 ℃, the resistance increased by 40%; that is, an increase of 1 ℃ resistance value to increase 0.4 ~ 0.6%. General measurement units and some laboratories in order to accurately carry out temperature measurement, most of the use of standard platinum resistance thermometer.