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Type N Thermocouple Wire NP (Ni-cr-si) NN (Ni-si-magnesium)
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xProduct Details
| Product Name | Thermocouple Bare Wire | Color | Bright |
|---|---|---|---|
| Certificate | ISO9001 | Temperature Range | -200°C And 1260°C (-330°F To 2300°F) |
| EMF Tolerance | +/- 2.2C Or +/- .75% | Grade | NP/NN, Extension Grade NPX/NNX |
| Positive | Ni-cr-si | Negative | Ni-si-magnesium |
| Other Name | Nicrosil | Special Limits Of Error | +/- 1.1C Or 0.4% |
Product Description
- Thermocouple Wire
Type N Thermocouple (Nickel-Chromium-silicon / Nickel-Silicon-Magnesium):
The Type N thermocouple is composed of a nickel-14% chromium-1 1/2% silicon (+) wire versus a nickel 4 1/2% silicon-1/10% magnesium (-) wire. The Type N thermocouple is the newest addition to the ISA family. It was developed to be used under the same conditions as a Type K.
Type N should be used in oxidizing or inert atmospheres with a service temperature range between -200°C and 1260°C (-330°F to 2300°F). The addition of silicon and chromium makes this type of thermocouple more resistant to Green-Rot and less drifting when compared to a Type K.
The negative element, or NN, of a Type N thermocouple can be described by any of the following names: Nisil, nickel-silicon, or, HAI-NN1. The positive element, or NP, of a Type N thermocouple can be described by any of the following names: Nicrosil, nickel-chromium-silicon, or HAI-NP1.
- Thermocouple Wire
| Code | Wires component of the thermocouple | |
| +Positive leg | -Negative leg | |
| N | Ni-cr-si (NP) | Ni-si-magnesium (NN) |
| K | Ni-Cr (KP) | Ni-Al(Si) (KN) |
| E | Ni-Cr (EP) | Cu-Ni<constantan> (EN) |
| J | Iron (JP) | Cu-Ni<constantan> (JN) |
| T | Copper (TP) | Cu-Ni<constantan> (TN) |
- Standards
| ASTM | ANSI | IEC | DIN | BS | NF | JIS | GOST |
| (American Society for Testing and Materials) E 230 | (American National Standard Institute) MC 96.1 | (European Standard by the International Electrotechnical Commission 584)-1/2/3 | (Deutsche Industrie Normen) EN 60584 -1/2 | (British Standards) 4937.1041, EN 60584 - 1/2 | (Norme Française) EN 60584 -1/2 - NFC 42323 - NFC 42324 | (Japanese Industrial Standards) C 1602 - C 1610 | (Unification of the Russian Specifications) 3044 |
Detailed Parameter of thermocouple wire
Working Temperature Range
| 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 |
- Size range
Wire: 0.12 to 8.0 mm.
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Application of thermocouple:
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Heating - Gas burners for ovens
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Cooling - Freezers
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Engine protection - Temperatures and surface temperatures
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High temperature control - Iron casting
- Type N Temperature Range:
-
Maximum continuous operating temperature: up to 2,300F (1,260C)
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Short term use: 2,336F (1,280C)
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Thermocouple grade wire, -454 to 2300F (-270 to 1,260C)
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Extension wire, 32 to 392F (0 to 200C)
- Type N Accuracy (whichever is greater):
- Standard: +/- 2.2C or +/- .75%
- Special Limits of Error: +/- 1.1C or 0.4%
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