Check with seller How to choose thermocouple for experimental furnace

Published date: April 17, 2020
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The thermocouple of the temperature measuring element of the experimental electric furnace is selected according to the use temperature. Today, I'd like to introduce the graduation number of the thermocouple and what temperature stage each graduation number is applicable to.
1. High temperature resistance, the temperature measurement range of the experimental furnace thermocouple mainly depends on the high temperature performance of the thermoelectric pole, that is to say, in the high temperature medium, the more stable the physical and chemical performance of the thermoelectric pole is, the wider the temperature measurement range of the thermocouple composed of it is.
2. Good readability: thermocouples made of the same two kinds of thermoelectric materials are required to have the same and stable electrothermal performance, so that the thermoelectric couple can be produced in batches and have good interchangeability;
3. High sensitivity and good linearity - the thermoelectric potential of temperature difference generated by the couple is required to be large enough and linear with the temperature;
4. It is required that thermoelectric materials can meet the above requirements, and its resistance coefficient and resistance temperature coefficient should be as small as possible, and its price is cheap and its supply is sufficient.
The thermocouple used in the experimental furnace should be selected reasonably according to the requirements. At present, the commonly used thermocouples are as follows:
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