热电偶是目前工业上应用最广泛的感温元件。它结构简单、使用方便、测量精度高、便于远距离传送和自动记录。 在显示仪表正常的情况下,热电偶常见的故障如下: 1.显示仪表指示偏低 (1)保护管内潮湿或瓷管绝缘性不良; (2)热电偶接线盒内接线柱间由于灰土、昆虫等脏物,降低了绝缘 Thermocouple is the industry’s most widely used temperature sensing element. It is simple in structure, easy to use, high measuring accuracy, convenient for long distance transmission and automatic recording. In the case of normal display instrument, thermocouple common faults are as follows: 1. Display instrument instructions are low (1) protection of the tube wet or bad porcelain insulation; (2) thermocouple junction box between the terminals due to dust, insects Other dirt, reduce the insulation