End the application of thermal resistance characteristics1

Transverse thermal resistance overview

end heat resistance temperature sensing element resistance wire winding by special processing, close to the face in the thermometer. Compared with general axial thermal resistance, it can reflect more correctly and quickly end face of the actual temperature being measured, is suitable for measuring temperature bearing and other parts of the face.

using the end resistance points

( 1) Generally speaking, thermal resistance temperature measurement system, connecting wires and display instrument, etc.

(1) thermal resistance and the index number of the display instrument must agree

(2) in order to eliminate the influence of the connection wire resistance change, must adopt three wire connection

( 2) Transverse thermal resistance is by thermal components ( The resistor body) , wire, insulation materials, stainless steel casing combination solid body, its diameter is commonly from 1 to 8 mm, minimum of phi mm. Compared with the normal thermal resistance, transverse thermal resistance has the following advantages:

(1) small volume, no internal air gap and thermal inertia, small measuring hysteresis;

2. Good mechanical properties, resistance to vibration and impact resistant;

3. Can bend, easy to install

4. Long service life.

( 3) Transverse thermal resistance temperature sensing element resistance wire winding by special processing, close to the face in the thermometer. Compared with general axial thermal resistance, it can reflect more correctly and quickly end face of the actual temperature being measured, is suitable for measuring temperature bearing and other parts of the face.

( 4) Type flameproof thermal barrier explosion heat resistance through the special structure of the junction box, put the shell internal explosive mixed gas by sparks or electric arc resistance such as shadow to the circuit repair is bound to change the length of the wire resistance and impact resistance, resistance to replace the new body is good, if repair welding, after welding and calibrated before use.

( 5) In order to eliminate the influence of the connection wire resistance change, must use three wire connection.

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