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本文提出了一种测定已安装的表面温度传感器动态响应特性的新方法。用一种叫做回路电流阶跃响应(LCSR)实验的方法在现场测试已安装的表面温度传感器(如表面热电偶等)的暂态响应。方法是用电流加热传感器。测量电流断开后传感器的暂态响应。把该暂志响应分析用数学方法转换成传感器对被测物体表面温度变化时的响应。并且给出了已安装的表面热电偶的响应时间,对表面热电偶传感器用阶跃热流实验验证了该方法。一般来讲,该方法提供了一种可靠的在现场测试已安装的表面热电偶的响应时间的手段。另外本文还分析了影响表面热电偶温度传感器动态响应的各种因素(如设计情况、安装条件等)。
This paper presents a new method of determining the dynamic response of an installed surface temperature sensor. The transient response of an installed surface temperature sensor (such as a surface thermocouple, etc.) is tested in the field using a method called loop current step response (LCSR) experiment. The method is to heat the sensor with current. Measure the transient response of the sensor after the current is disconnected. The transient response analysis is mathematically transformed into the sensor response to changes in the surface temperature of the measured object. The response time of the installed surface thermocouple is given, and the surface thermocouple sensor is verified by the step heat flow test. In general, this method provides a reliable means of testing the response time of installed surface thermocouples in the field. In addition, this paper also analyzes the various factors that affect the dynamic response of the surface thermocouple temperature sensor (such as design conditions, installation conditions, etc.).