How is the calibration number of a thermocouple confirmed

What is the graduation number of a thermocouple?
The graduation number of a thermocouple is a parameter used to represent the temperature potential relationship of the thermocouple, also known as the temperature potential characteristic curve. The potential of a thermocouple at different temperatures can be calculated using a graduation number, thereby achieving temperature measurement.

Why do we need to confirm the calibration number of the thermocouple?
The graduation number of thermocouples will change over time and be affected by external factors such as magnetic field and mechanical stress. Therefore, it is necessary to regularly confirm the calibration number of thermocouples to ensure the accuracy and reliability of their measurements.

3. How to confirm the graduation number of thermocouples?
The calibration number confirmation of thermocouples involves two steps. The step is to measure the temperature and potential values of the tested thermocouple and record them. The second step is to use a standard thermocouple as a reference and measure its potential at the same temperature to obtain the potential value of the standard thermocouple. By comparing the potential values of the tested thermocouple and the standard thermocouple, the graduation number of the thermocouple can be calculated.

How difficult is it to confirm the thermocouple graduation number?
The difficulty of confirming the thermocouple calibration number depends on the experience of the measuring equipment and operators. In practical operation, it is necessary to pay attention to factors such as the stability of the temperature sensor, the stability of the voltage source, and the measurement instrument, which can affect the accuracy of confirming the graduation number.

What is the time interval for regularly confirming the graduation number?
The calibration number of thermocouples should be confirmed regularly, and it is generally recommended to do so once a year. When the thermocouple is affected by factors such as mechanical impact, high temperature, corrosion, etc., it is also necessary to reconfirm the graduation number.

What impact does the confirmation of the graduation number have on the measurement of thermocouples?
Confirming the division number of the thermocouple can accurately calculate the relationship between temperature and potential, thereby improving the measurement accuracy of the thermocouple. If the graduation number is not accurate, there may be errors in the measurement results of thermocouples, which can affect temperature measurement in industrial production and scientific research.