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[Chemical Knowledge]：Be careful with thermocouples, safety first

Read： 683 Time：8months ago Source：Transform the World with Simplicity

Thermocouple is a common temperature measuring instrument, which can convert temperature into electrical signal output. Therefore, it is widely used in experiments, but thermocouples also need special care during use to ensure the safety of users. Here we will introduce you to some of the use of thermocouple need to pay attention to matters:

1. choose the appropriate thermocouple
first in the choice of thermocouple should be based on the specific use of the environment to choose the appropriate type and specifications, such as high temperature thermocouple for high temperature environment, and for corrosive gases and other special environment need to choose a corrosion resistant thermocouple. It is also necessary to select the appropriate thermocouple model according to the temperature range to be measured.

2. installation and connection
When installing and connecting thermocouples, it is necessary to ensure that the equipment is in a shutdown state, and the connected lines should be firm and reliable to avoid poor contact or short circuit.

in the connection also need to pay attention to the polarity of the thermocouple, to avoid the reverse lead to measurement errors.

3. to prevent damage
thermocouple is a more fragile instrument, especially in high temperature, corrosion and other harsh environments are vulnerable to damage, so in the use of the process to try to avoid collision, friction and other operations. At the same time, it is necessary to check and maintain the thermocouple regularly to ensure its normal operation.

4. avoid electromagnetic interference
in the use of thermocouples need to avoid electromagnetic interference, because electromagnetic interference will affect the measurement accuracy of thermocouples, and even lead to measurement failure. Therefore, it is necessary to stay as far as possible from the power supply equipment, strong electromagnetic field and other areas that may cause interference during use.

5. pay attention to safe operation

When using thermocouples, you need to always pay attention to safe operation to avoid accidents, such as being careful to avoid burns, electric shock and other dangers during operation. It is also necessary to understand the various problems that may be encountered during the use of thermocouples, and to master the corresponding emergency treatment methods.

thermocouple is a very useful instrument in experiments, special care is required during use to ensure the safety of experimenters. I hope that through the introduction of this article, we can better understand the precautions of thermocouples and avoid accidents during use.