1. Application of armored thermal resistance

     It is usually used in conjunction with display instruments, recording instruments, and electronic computers. Directly measure the surface temperature of liquid, steam and gas medium and solid surface in the range of -200℃-500℃ in a variety of production processes.

2. Features of armored thermal resistance

　　• Fast thermal response time, reducing dynamic error;
　　• Small diameter, unlimited length;
　　• High measurement accuracy;
　　•Imported thin-film resistor elements with stable performance;

3. The working principle of armored thermal resistance

　　Armored thermal resistance uses the characteristic that the resistance of a substance changes as the temperature changes to measure the temperature. When the resistance value changes, the working instrument will display the temperature value corresponding to the resistance value.

4. The main technical parameters of armored thermal resistance

　　Product implementation standards
　　IEC751
　　JB/T8623-1997
　　JB/T8622-1997

5. Diameter material of thermal resistance wire

Form of thermal resistance wire	Single-branch thermal resistance wire	Double-branch thermal resistance wire
Diameter of casing	Φ3 Φ4 Φ5 Φ6 Φ8	Φ4  Φ5 Φ6 Φ8
Material of casing	1Cr18Ni9Ti	1Cr18Ni9Ti

6. Insulation resistance at room temperature

The temperature of the thermal resistance is 15-35°C, the relative humidity is not more than 80%, and the test voltage is 10-100V (DC). The insulation resistance between the electrode and the outer tube>100MΩ.

7. The temperature measurement range and temperature difference of the armored thermal resistance

Model number	Index number	Temperature range °C	Accuracy class	tolerance
WZPK	Pt100	-200­­-+500	Class A	±（0.15+0.002 ltl）
WZPK	Pt100	-200­­-+500	Class B	±（0.30+0.005ltl）

8. Thermal response time of armored thermal resistance

Casing diameter	Thermal response time
Ф3	≤3
Ф4	≤5
Ф5	≤8
Ф6	≤12
Ф8	≤15

9. The structure of the measuring terminal of the armored thermal resistance

   

10. Installation and fixing form of armored thermal resistance



11. Junction box form of armored thermal resistance


12. Model naming of armored thermal resistance


13. Armored thermal resistance, selection table

Explosion-proof armored thermal resistance, selection table	Flat-plug thermal resistance, selection table
Waterproof thermal resistance, selection table	Compensation wire type thermal resistance, selection table