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latinum rhodium thermocouple WRR-120 industrial assembled thermocouple is used as a temperature sensor, which 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
Temperature measurement range and allowable error
|
Thermocouple category
|
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:
Unfixed type (ceramic protective tube) thermocouple
|
Thermocouple category |
Product model |
Dividing number |
Temperature range ℃ |
Specifications |
Thermal response time T0.5 S |
|
|
Diameter mm |
Protective pipe material |
|||||
|
Single platinum and rhodium30-Platinum and Rhodium6 |
WRR-120 |
B |
0~1600 |
16 |
Corundum quality |
< 150 |
|
WRR-121 |
25 |
< 360 |
||||
|
Double platinum rhodium30-Platinum and Rhodium6 |
WRR2-120 |
16 |
< 150 |
|||
|
WRR2-121 |
25 |
< 360 |
||||
|
Single platinum and rhodium10-Platinum |
WRP-120 |
S |
0~1300 |
16 |
High aluminum content |
< 150 |
|
WRP-121 |
25 |
< 360 |
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|
Double platinum rhodium10-Platinum |
WRP2-120 |
16 |
< 150 |
|||
|
WRP2-121 |
25 |
< 360 |
||||
|
Single Ni-Cr-Ni-Si |
WRN-122 |
K |
0~1100 |
16 |
High aluminum content |
< 240 |
|
WRN-123 |
0~1200 |
20 |
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|
Double branch nickel-chromium-nickel-silicon |
WRN2-123 |
0~1100 |
||||
|
Single platinum and rhodium30-Platinum and Rhodium6 |
WRR-130 |
B |
0~1600 |
16 |
Corundum quality |
< 150 |
|
|
||||||
|
< 360 |
||||||
|
|
||||||
|
< 150 |
||||||
|
WRR-131 |
25 |
|
||||
|
< 360 |
||||||
|
Double platinum rhodium30-Platinum and Rhodium6 |
WRR2-130 |
16 |
|
|||
|
|
||||||
|
WRR2-131 |
25 |
|
||||
|
|
||||||
|
Single platinum and rhodium10-Platinum |
WRP-130 |
S |
0~1300 |
16 |
High aluminum content |
< 150 |
|
|
||||||
|
< 360 |
||||||
|
|
||||||
|
< 150 |
||||||
|
WRP-131 |
25 |
|
||||
|
< 360 |
||||||
|
Double platinum rhodium10-Platinum |
WRP2-130 |
16 |
|
|||
|
|
||||||
|
WRP2-131 |
25 |
|
||||
|
|
||||||
|
Single Ni-Cr-Ni-Si |
WRN-133 |
K |
0~1200 |
20 |
High aluminum content |
< 240 |
|
Double branch nickel-chromium-nickel-silicon |
WRN2-133 |
0~1100 |
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Note:1) structural characteristics: the non-inserted part is carbon steel 20 #
2)Diameter, diameter.25mm is a double-layer porcelain casing.
Working principle of thermocouple
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.
