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4.当补偿导线的类型和极性混淆不明时如何判别? 答:当补偿导线的类型和极性混淆不明时可用下述简法进行判别。将补偿导线一端绝缘层去掉,两根金属丝拧紧(不必进行焊接)浸入沸水中。另一端接于按一定热电偶分度号刻度的显示仪表上(见图2),观察指示值的变化。若仪表指示针反转,则说明极性接反。调换仪表接线柱接线后,指示针应正转至一定位置。若仪表指示值为100℃附近(可能稍有误差),则说明该补偿导线与该显示仪表分度号的热电偶相符合。若指示针比100℃高或低得很多,则说明补偿导线不能与此显示仪表配套。例如,设显示仪表分度号
4. When the type and polarity of compensation wire confusion how to determine? A: When the compensation wire type and polarity confusion can be identified using the following simple method. One end of the compensation wire insulation removed, two wire tighten (do not have to be welded) immersed in boiling water. The other end of the thermocouple indexing by a certain degree of graduation display instrument (see Figure 2), observed changes in the value indicated. If the meter pointer is reversed, then the polarity is reversed. After replacing the instrument terminal wiring, the indicator should be transferred to a certain position. If the indication value of the instrument is around 100 ℃ (which may be a little error), then the compensation conductor matches the thermocouple of the instrument graduation number. If the indicator is much higher or lower than 100 ℃, then the compensation wire can not be matched with this indicator. For example, set the instrument graduation number