1. Application of assembling thermocouple

 It is usually used in conjunction with display instruments, recording instruments, and electronic calculations. It is directly used to measure the surface temperature of liquid, steam and gas medium and solid surface in the range of 0°C~1300°C in the production process.

2. Features of assembling thermocouple

       • Simple assembly and easy replacement
       • Compression spring type temperature sensing element, good anti-vibration performance;
       • Large temperature measurement range
       • High mechanical strength, good pressure resistance

3. The working principle of assembling a thermocouple

The electrode of the thermocouple is composed of two different conductor materials. When there is a temperature difference between the measuring terminal and the reference terminal, a thermoelectric potential will be generated, and the working instrument will display the temperature value corresponding to the thermoelectric potential.

4. The main technical parameters of the assembled thermocouple

       Product implementation standards
       IEC584
       IEC1515
       GB/T16839-1997
       JB/T5582-91

5. Normal temperature insulation resistance of assembled thermocouple

The ambient temperature of the thermocouple is 20±15°C, and the relative humidity is not more than 80%. The test voltage is 500±50V (DC). The insulation resistance between the electrode and the outer tube is >1000Ω.m.

6. Measuring range and tolerance

Model number	Index number	Tolerance-grade
		I		II
		Tolerance value	Temperature measurement range °C	Tolerance value	Temperature measurement range °C
WRN	K	±1.5°C	-40~+375	±2.5 °C	-40~+333
		±0.004ltl	375~1000	±0.0075 ltl	333~1200
WRM	N	±1.5°C	-40~+375	±2.5°C	-40~+333
		±0.004 ltl	375~1000	±0.0075 ltl	333~1200
WRE	E	±1.5°C	-40~+375	±1.5°C	-40~+333
		±0.004 ltl	375~800	±0.004 ltl	333~900
WRF	J	±1.5°C	-40~+375	±1.5°C	-40~+333
		±0.004 ltl	375~750	±0.004 ltl	333~750
WRC	T	±1.5°C	-40~+125	±1°C	-40~+133
		±0.004 ltl	125~350	±0.0075 ltl	133~350

7. The form of junction box

 
8. The naming method of the model


9. Model and specifications


10. Wiring method

Thermocouple without fixing device, selection list	Fixed thread thermocouple, selection list

Movable flange thermocouple, selection list	Fixed flange thermocouple, selection list
Fixed thread cone thermocouple, selection list	Active pipe joint thermocouple, selection list
Straight pipe joint thermocouple, selection list	Fixed threaded joint thermocouple, selection list

Movable threaded pipe joint thermocouple, selection list