Thermal resistance type and introduction
Thermal resistance is a kind of commonly used temperature measuring instrument.Thermal resistance is based on the characteristic that the resistance of metal conductor increases with the increase of temperature to make temperature measurement. Thermal resistance has the advantages of stable performance, flexible use and high reliability.Today we will mainly introduce four types of commonly used thermal resistance products, I hope to help you.
 
Common type thermal resistance
According to the temperature measurement principle of the thermal resistance, the change of the measured temperature is directly measured by the change of the resistance value of the thermal resistance. Therefore, the change of the resistance of various conductors, such as the lead wire of the thermal resistance body, will affect the temperature measurement.
 
Explosion-proof thermal resistance
Explosion-proof thermal resistance through the special structure of the junction box, the shell of the explosive mixed gas due to spark or arc and other effects of the explosion occurred in the junction box, the production site will not lead to the explosion.Explosion-proof thermal resistance can be used for temperature measurement in Bla- B3c zone with explosion hazard.
 
End thermal resistance
The end thermal resistance temperature sensing element is made of specially treated resistance wire wrapped and attached to the end of the thermometer.Compared with the general axial thermal resistance, it can reflect the actual temperature of the measured end face more correctly and quickly, and is suitable for measuring the end face temperature of the bearing bush and other parts.
 
Armored thermal resistance
Armor thermal resistance is by the temperature element (resistance body), lead, insulation material, stainless steel casing combination of the solid body, its outer diameter is generally 2-- 8mm, the minimum up to mm.Compared with ordinary thermal resistance, it has the following advantages:
1. Small volume, no air gap inside, small measurement lag on thermal inertia;
2. Good mechanical properties, vibration resistance and impact resistance;
3, Thermal resistance type and introduction can bend, easy to install;
4. Long service life.