Thermocouple material includes wire, strip and protection tubes for use at temperatures up to 1260°C (2300°F). For many industrial heating processes, particularly those carried out at high temperatures, a thermocouple is the most accurate, convenient and simple method of temperature measurement.
Each individual arm is calibrated against platinum and the EMF values are shown
on each coil or spool.
Kanthal®'s product program for thermocouples includes:
Our program also includes a bi-filar side-by-side configuration in some size ranges.
| Code | +Positive leg | -Negative leg |
|---|---|---|
| N | Nicrosil (NP) | Nisil (NN) |
| K | Thermothal KP | Thermothal N (KN) |
| K | Thermothal KM | Thermothal N (KN) |
| E | Thermothal P (EP) | Cuprothal (EN) |
| J | Iron (JP) | Cuprothal (JN) |
| T | Copper* | Cuprothal (TN) |
*Not produced by Sandvik
Wire: Kanthal® thermocouple wire ranges from 0.05 to 8.0 mm (0.0019 to 0.315 inch). Thermocouple wire in the size range 0.0254 mm to 0.51 mm (0.001 to 0.0201 inch) can be supplied with or without an insulating coating.
Strip: Standard sizes for thermocouple strip range from thickness 0.10 to 3.0 mm (0.0039 to 0.181 inch) and width from 4 to 195 mm (0.157 to 7.68 inch).
Kanthal® thermocouple alloys are supplied according to the following standards shown below. Where older standards are still in use (which are not equivalent to those listed below), we can supply different EMF values upon request.
| ASTM | (American Society for Testing and Materials) E 230 |
|---|---|
| ANSI | (American National Standard Institute) MC 96.1 |
| IEC | (European Standard by the International Electrotechnical Commission 584)-1/2/3 |
| DIN | (Deutsche Industrie Normen) EN 60584 -1/2 |
| BS | (British Standards) 4937.1041, EN 60584 - 1/2 |
| NF | (Norme Française) EN 60584 -1/2 - NFC 42323 - NFC 42324 |
| JIS | (Japanese Industrial Standards) C 1602 - C 1610 |
| GOST | (Unification of the Russian Specifications) 3044 |
| Thermocouple | Compensating cable | Alloy | Temperature range °C (°F) |
|
|---|---|---|---|---|
| Type K | WPX WNX (KCA) |
Iron Cuprothal WX - |
0 to +150 (+32 to 300) - - |
|
| Type K | VPX VNX (KCB) |
Copper Cuprothal VX - |
0 to +100 (+32 to 200) - - |
|
| Type S, R* (Pt/PtRh) | Cu SNX (RCA-SCA) (RCB-SCB) |
Copper Cuprothal SX - - |
- - 0 to +100 (+32 to 200) 0 to +200 (+32 to 400) |
|
*Not within the Kanthal program
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