应用背景 Application Background检查 PT100 型号的温度传感器是否正常工作。 Check whether the PT100 type sensor works satisfactory.
PT100 传感器根据使用场景不一样，分为2线、3线和4线制(如下图所示)。本文将以3线制的 PT100 传感器进行描述检测步骤。The PT100 sensor can be divided into 2 wires, 3 wires and 4 wires mode according to different application scenarios (as shown below). In this paper, a 3-wire PT100 sensor will be used to describe the checking procedure.
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检查步骤Checking Procedure 用万用表测量 2#点和 3#点之间阻值，并记录下来。Measure the resistance between points 2# and 3# by multi-meter and record it.
用万用表测量 3#点和 4#点之间的阻值，并记录下来。 Measure the resistance between points 3# and 4# by multimeter and record it.
用万用表测量 2#点和 4#点之间的阻值，并记录下来。Measure the resistance between points 2# and 4# by multi-meter and record it.
用万用表分别测量 2#、3#、4#点与传感器本体的阻值，并记录下来。Measure the resistance value of point 2#, 3#, 4# and the sensor body by multimeter, and record it.
参考《PT100分度表》，可将记录的阻值转化成温度。对比实际温度，即可判断探头的状态。
As per the 'PT100 Index Table', we can translate the resistance value to temperature. Then wecanjudg the status of the sensor by comparing the actual temperature.
