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Petrochemical thermocouple (resistance)
1. Application
The petrochemical thermocouple (resistance) produced by our company is specially designed for the petrochemical sector, and can measure the liquid, steam and gas medium and solid surface temperature in the range of -200℃～1600℃.
2. Working principle
The electrodes of a thermocouple consist of two different conductors. When there is a temperature difference between the measuring end and the reference end, a thermoelectric potential will be generated, and the working instrument will display the temperature value corresponding to the thermoelectric potential.
Thermal resistance is the principle of using the relationship between resistance and temperature as a certain function. When there is a temperature difference in the measured medium, a thermal resistance will be generated, and the working instrument will display the temperature value corresponding to the thermal resistance.
3. Product implementation standards
IEC1515 IEC584 IEC751 JB/T5518-91 JB/T5582-91
4. Nominal pressure
Generally, it refers to the static external pressure that the protection tube can withstand without breaking at room temperature. The allowable working pressure is not only related to the material, diameter and wall thickness of the protection tube, but also to its structure, installation method, flow rate and type of the measured medium.
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