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Wrn-624 thermocouple with welded fixed cone protection tube is used as temperature sensor in industry. It is usually used with display instrument, recording instrument and electronic regulator. It can directly measure the surface temperature of liquid, steam and gas medium in the range of 0 ℃ to 1800 ℃ in various production processes.
Specification
Thermocouple cate
gory
Code name
Dividing number
Measuring range ℃
Allowable deviation t ℃
Platinum and rhodium30-Platinum and Rhodium6
WRR
B
01800
±1.5 ℃ or ±0.25%
Platinum rhodium 10-platinum
WRP
S
0 ≤ 1600
±1.5 ℃ or ±0.25%
Nickel-chromium-nickel-silicon
WRN
K
0 / 1300
±2.5 ℃ or ±0.75%
Nickel chromium copper nickel
WRE
E
0 / 800
±2.5 ℃ or ±0.75%
Model selection:
W
R
Specification
Content
R
Platinum and rhodium30-Platinum and Rhodium6
P
Platinum and rhodium10-Platinum
N
Nickel-chromium-nickel-silicon
E
Nickel-chromium-copper-nickel (nickel-chromium-copper)
Temperature
-
1
Non-fixed installation type
2
Fixed thread type
3
Movable flange
4
Fixed flange type
5
Movable flange angle ruler form
6
Fixed thread conical protective tube
Install fixed form
2
Splash proof
3
Waterproof type
4
Flameproof type
Junction box form
0
Φ 16mm protection tube
1
Φ 25mm protection pipe (double casing)
2
Φ 16mm High Aluminium Pipe (single layer casing)
3
Φ 20mm high aluminum pipe
Design serial number
Welded fixed conical protection tube thermocouple
2) nominal pressure: 30 MPA, velocity: < 80m/s
Two stages of conductors with different components are welded to form a loop. The direct temperature measuring end is called the measuring end, and the terminal terminal is called the reference terminal. When there is a temperature difference between the measuring end and the reference end, the thermal current will be generated in the loop, which will be connected to the display instrument, and the corresponding temperature value of the thermoelectric force produced by the thermocouple will be indicated on the instrument.
The thermoelectric force of the thermocouple will increase with the increase of the temperature at the measuring end. The thermoelectric force is only related to the material of the armored thermocouple conductor and the temperature difference at both ends, and has nothing to do with the length and diameter of the thermal electrode.
