Product Description
Tankii k type 10~36 SWG Bare thermocouple wire for thermocouple sensor
What Type of Thermocouple Wire should I get?
The wire where your measurement junction will be is called "thermocouple grade" wire. It is high-grade wire that accurately portrays the characteristics of the two different composition metals when the thermocouple is heated or cooled. After that, there is "extension grade" wire, which is simply a cheaper version of thermocouple grade wire, both in price and quality. Depending on your process, you may need only a short length of wire and use all thermocouple grade material. However, some processes require long runs of wire. In those cases, one would use a small amount of initial thermocouple grade wire then attach the cheaper extension grade wire to run the remaining distance to the control that would be reading the voltage sensed by the instrument. It is of the utmost importance to match the correct colour-coded wires.
Thermocouple wire allows temperatures to be measured electronically. A typical thermocouple construction consists of a pair of dissimilar metals that are electrically joined together at the sensing point and connected to a voltage measuring instrument at the other end. When one junction is hotter than the other, a thermal "electromotive" force (in millivolts) is produced that is roughly proportional to the difference in temperature between the hot and cold junctions.
NiCr-NiSi (Type K) thermocouple wire finds the widest use in all basemetal thermocouple, at temperature above 500 °C.
Type K thermocouple wire has strong resistance to oxidation than other base metal thermocouples. It has high EMF against Platinum 67, excellent temperature accuracy, sensitivity and stability, with a low cost. It is recommended for oxidizing or inert atmospheres, but cannot be used directly in the following cases:
(1) Alternatively oxidizing and reducing atmosphere.
(2) Atmosphere with sulphur gases.
(3) Long time in vacuum.
(4) Low oxidizing atmosphere such as hydrogen and carbon monoxide atmosphere.
Tankii k type 10~36 SWG Bare thermocouple wire for thermocouple sensor
Detailed Parameter
|
Chemical Composition for thermocouple wire
|
Conductor Name |
Polarity |
Code |
Nominal Chemical Composition /% |
Ni |
Cr |
Si |
Ni-Cr |
Positive |
KP |
90 |
10 |
-- |
Ni- Si |
Negative |
KN |
97 |
-- |
3 |
|
Working Temperature
of thermocouple wire
|
| Diameter/mm |
Long time Working temperature /ºC |
Short period Working temperature /ºC |
0.3 |
700 |
800 |
0.5 |
800 |
900 |
0.8,1.0 |
900 |
1000 |
1.2,1.6 |
1000 |
1100 |
2.0,2.5 |
1100 |
1200 |
3.2 |
1200 |
1300 |
Application of thermocouple wire:
1. Heating - Gas burners for ovens
2. Cooling - Freezers
3. Engine protection - Temperatures and surface temperatures
4. High temperature control - Iron casting
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