Methods for handling thermocouple leakage current

The thermocouple products commonly used by users are temperature measuring elements commonly used in the construction of temperature measuring instruments. Used for direct temperature measurement. Assembling thermocouples is also responsible for converting temperature signals into thermoelectric signals and converting them into the measured medium through electronic instruments. Temperature. In daily industrial use, the appearance of various thermocouples usually varies according to their needs, but fundamentally, their basic structure is roughly the same, usually composed of thermal electrodes, junction boxes, and protective sleeves. It is usually used in conjunction with electronic components, such as display instruments, recording instruments, and electronic regulators.
During the use of assembled thermocouples, leakage may sometimes occur due to long service life or other reasons. How should we take appropriate emergency measures when thermocouple leakage occurs? Based on years of experience in designing and manufacturing instruments, our company has summarized the following correct emergency solutions for you to deal with thermocouple leaks.
1. Please note that the grounding wire should be led from the hot junction of the thermocouple to the ground.
2. When checking, ground the negative pole of the thermocouple to eliminate leakage signals on the thermocouple.
3. Thermocouples must be kept out of contact with refractory bricks and away from high temperatures.
4. Add heat-resistant steel or silicon carbide tube to the thermocouple tube and ground it.
5. A filter device needs to be added to the output of the thermocouple.
When there is an emergency leak in the thermocouple, the above method can be used. These emergency measures are to ensure that the instrument can function properly under difficult and harsh conditions. I want to ensure that the instrument can accurately reference the temperature, control the temperature, and record the relevant temperature., Enable various instruments to play a measuring role in industrial production.