Transverse thermal resistance is introduced1

Transverse thermal resistance wire winding by special processing, compared with general axial thermal resistance, transverse thermal resistance can be more correctly and quickly reflect the actual situation of the end face temperature being measured. Users need to be aware of when using transverse thermal resistance is more, the project is to introduce the specific end use thermal resistance of the note.

( 1) Generally speaking, thermal resistance temperature measurement system, connecting wires and display instrument, etc. Must pay attention to the following two points:

(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 use 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) Flameproof thermal resistance flameproof thermal resistance through the special structure of the junction box, its 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 the repair welding, after welding to be calibrated before use.

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key words: thermal resistance, thermocouple, thermal resistance, platinum resistance, PT100, PT1000, pressure sensor and digital temperature sensor