K Thermocouple Bare Wire with J E T N 0.2mm to 10mm Diameter , High Temperature Thermocouple Wire
Type |
Conductor |
Temperature range |
μV |
Tolerance acc IEC 584-2 | ||||||
Class 1
|
Class 2 |
Class 3 | ||||||||
T | + Copper (Cu) -Constantan(CuNi) | -200 ºC / + 350 ºC - | -5603 to - 17816 | -40 ºC / + 350 ºC | ± 0,5 ºC or ± 0,004 . /t/ |
| ± 1 ºC or ± 0,0075 . /t/ | -200 ºC / + 40 ºC | ± 1 ºC or ± 0,015 ./t/ | |
J | + Iron (Fe) -Constantan(CuNi) | -40 ºC / + 750 ºC - | -1960 to + 42283 | -40 ºC / + 750 ºC | ± 1,5 ºC or ± 0,004 . /t/ |
| ± 2,5 ºC or ± 0,0075 ./t/ |
|
| |
E | + Chromel (NiCr) -Constantan(CuNi) | -200 ºC / + 900 ºC - | -8824 to + 68783 | -40 ºC / + 800 ºC | ± 1,5 ºC or ± 0,004 . /t/ | -40 ºC / + 900 ºC | ± 2,5 ºC or ± 0,0075 ./t/ | -200 ºC / + 40 ºC | ± 2,5 ºC or ± 0,015 ./t/ | |
K | + Chromel (NiCr) - Alumel (NiAl) | -200 ºC / + 1200 ºC | -5891 to + 48828 | -40 ºC / + 1000 ºC | ± 1,5 ºC or ± 0,004 . /t/ | -40 ºC / + 1200 ºC | ± 2,5 ºC or ± 0,0075 . /t/ | -200 ºC / + 40 ºC | ± 2,5 ºC or ± 0,015 ./t/ | |
N | + Nicrosil (NiCrSi) - Nisil (NiSi) | -200 ºC / + 1200 ºC | -3990 to + 43836 | -40 ºC / + 1000 ºC | ± 1,5 ºC or ± 0,004 . /t/ | -40 ºC / + 1200 ºC | ± 2,5 ºC or ± 0,0075 ./t/ | -200 ºC / + 40 ºC | ± 2,5 ºC or ± 0,015 ./t/ |
Thermocouple materials are normally supplied to meet manufacturing tolerances specified in the table for temperatures above -40 ºC.
These materials, however, may not fall within the manufacturing tolerances for low temperatures
given under Class 3 for Type T, E and K thermocouples if thermocouples are required to meet limits of Class 3,as well as those of Class 1 and/or Class 2.
The purchaser shall state this, and selection of materials is usaly required.