The stability of K type thermocouple control method

K type thermocouple is a thermocouple, has a certain application in many industries. K type thermocouple is very accurate in measurement, the stability of the K type thermocouple how to control the user know that it is vital for K type thermocouple measurement accuracy, below small make up to introduce specific K type thermocouple for everybody the stability of the control method.

k type thermocouple in the development of measuring sensor highest precision and efficiency of the best products, so it became the most widely in our use of temperature measuring element of a type, it directly measure temperature, and the temperature signals into a thermoelectric emfs, through electrical instrument ( Secondary instrument) Convert the temperature of the measured medium. The appearance of various k type thermocouple is vastly different from necessity, but their basic structure is roughly same, usually by the hot electrode, insulation sleeve to protect the main parts such as pipe and connection box, and usually display meter, recording meter and electronic regulator. K type thermocouple measuring the hot end and cold end temperature difference between. In order to get the feeling of hot end point of the absolute temperature, you must test the cold end temperature and adjusting k type thermocouple output accordingly.

now, the k type thermocouple cold junction at the input to the signal processing unit with the temperature usually rely on materials with high heat conductivity of stay. Thermal conductivity of 381 w/mK copper is an ideal material. Input connection must be electrical isolation, hot even road to the piece. The signal processing unit ideally should be in the same temperature environment.

the stability of the k type thermocouple, due to the temperature, the atmosphere is different, the same kind of sensors, such as k type k type thermocouple, the highest temperature also changes with different diameter, diameter of the same type k k type thermocouple is also due to the difference of structure, the stability of also have very big difference. When choosing a type k thermocouple, must consider: in view of the conditions of use common temperature and highest temperature; Using atmosphere such as REDOX; Vibration resistance. For prefabricated k type thermocouple, the influence of atmosphere, first of all depends on the structure of type thermocouple protection tube material and k, therefore, familiar with and master all kinds of protection tube materials physics, chemical properties, it is very necessary.

K type thermocouple finished the stability of the control method has been introduced, now people on how to control the accuracy of the thermocouple have learned, in the later measurement will be more accurate, after use will be more convenience for the users.

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