Supplied with 3.1 and calibration certificates
Type N mineral insulated thermocouple cable
Type N mineral insulated thermocouple cable uses NiCrSil-NiSil thermocouple conductors and is designed for temperature measurement from -270°C to +1260°C. Type N offers similar accuracy and temperature range to Type K, but provides greater stability. Kamet supplies Okazaki AerOpak® Type N MI cable in various diameters and sheath materials, including configurations available from stock.
Type N MI thermocouple cable specifications
| Specification | Type N AerOpak® |
|---|---|
| Thermocouple type | Type N |
| Thermocouple conductors | NiCrSil–NiSil |
| Temperature range | -270°C to +1260°C |
| Insulation | MgO (+98% or +99.4%, depending on configuration) |
| Standard diameters | 0.50–9.50 mm |
| Class | IEC EN60584 Class 1, ASTM E230 Special Limits or AMS2750 E |
| Manufacturer | Okazaki Manufacturing Company |
| Product family | AerOpak® |
| Certificates | 3.1 material and calibration certificates |
| Supply form | Coils or straight lengths |
| Minimum bending radius | 2× sheath diameter |
When should you use Type N MI thermocouple cable?
NiCrSi-NiSi thermocouples are suitable for use in oxidizing atmospheres, inert gas atmospheres, or dry reduction atmospheres up to 1200°C (ASTM E230: 1260°C). They require protection from sulphurous atmospheres but are known for their accuracy at high temperatures. The source voltage (EMF) and temperature range are nearly identical to Type K, making them ideal for applications requiring longer service life and greater stability. The Type N thermocouple demonstrates better repeatability between 300°C to 500°C compared to Type K.
Type N still offers superior oxidation resistance at elevated temperatures and a longer service life, especially in environments with sulfur presence, in comparison to Type K. These advantages make it particularly useful in the aerospace, nuclear, and semiconductor industries.
Type N thermocouples are furtermore widely used in various industrial applications, including temperature profiling in ovens, furnaces, and kilns, measuring the temperature of gas turbine and engine exhausts, and monitoring temperatures in the production and smelting processes within the steel, iron, and aluminum industries.
The thermocouple wire of type N AerOpak is from European origin. More about this thermocouple wire can be found here.
Calibrating Type N thermocouple cable up to 1100°C
Upon request, we offer calibration services up to 1100°C for Okazaki type N mineral insulated cable. This specialized calibration, complete with a certification, is available exclusively for custom cable requests. For further details about this service, do not hesitate to get in touch.
Available Type N MI cable sheath materials and diameters
Type N mineral insulated thermocouple cable is available with various sheath materials and diameters. Several common configurations are available from stock, while other combinations can be supplied on request.
For additional sheaths materials, diameters and wall thickness options, view our complete overview page of mineral insulated thermocouple cables.
| Thermocouple wire | Sheath material | MgO Insulation | Class | Outside Diameters | On stock | |
|---|---|---|---|---|---|---|
| Type N | AISI310S | +98% Normal purity | Class 1 | 0.50 mm to 9.50 mm | Various diameters on stock | Send inquiry |
| Type N | AISI316L | +98% Normal purity | Class 1 | 0.50 mm to 9.50 mm | 20-22 week delivery time | Send inquiry |
| Type N | AISI316Ti | +98% Normal purity | Class 1 | 0.50 mm to 9.50 mm | 20-22 week delivery time | Send inquiry |
| Type N | AISI321 | +98% Normal purity | Class 1 | 0.50 mm to 9.50 mm | 20-22 week delivery time | Send inquiry |
| Type N | AISI347 | +98% Normal purity | Class 1 | 0.50 mm to 9.50 mm | 20-22 week delivery time | Send inquiry |
| Type N | AISI446 | +98% Normal purity | Class 1 | 0.50 mm to 9.50 mm | 20-22 week delivery time | Send inquiry |
| Type N | Inconel 600 | +98% Normal purity | Class 1 | 0.50 mm to 9.50 mm | Various diameters on stock | Send inquiry |
| Type N | Inconel 601 | +98% Normal purity | Class 1 | 0.50 mm to 9.50 mm | Various diameters on stock | Send inquiry |
| Type N | Pyrosil | +99.4% High purity | Class 1 | 6.00, 4.50 and 3.00 mm | 20-22 week delivery time | Send inquiry |
Delivery times stated are for delivery to Kamet’s warehouse
How can we help you today?
Request a quotation for the cable you need for your sensor.
Technical specifications of Okazaki AerOpak® Type N MI cable
- Available in IEC EN60584 class 1, ASTM E230 special limits or AMS2750 E
- Supplied in accordance with IEC 61515
- Comes with a 3.1 certificate and a calibration certificate
- All raw materials used are of European, American, or Japanese origin
- Delivered as coils, with the option to order in straight lengths (which will have a bow or curvature)
- Standard wall thickness is at least 10% of the cable diameter, in accordance with IEC61515; other specifications are available upon request
- Standard wire OD is at least 15% of the diameter for simplex, duplex, and triplex, in accordance with IEC61515; contact us for other specifications
- Can be bent around a mandrel with a radius twice the sheath diameter without rupturing the sheath or losing insulation resistance
- The sheath can be welded, brazed, and soldered without changing insulation resistance, using normal care for the metals and thickness involved
- Specific dimension tolerances as per the ISO system of limits and fits are possible, such as h9; other tolerances are available upon request
Type N MI thermocouple cable supplied by Kamet
We offer standard cables in stock with direct delivery. For non-stock items, the delivery time ranges from 10 to 18 weeks. Products are supplied in whole coils or pieces.
As a customer, you can expect 24/7 access to our stock and prices via our digital portal. Furthermore, a multilingual team is always on hand to assist you with questions about standard or custom solutions.
Approximate Type N MI cable coil lengths
Coil lengths vary based on sheath materials. At the bottom of this page you will find a more detailed table with estimated coil lengths.
| Outside diameter (mm) | Φ0.50 | Φ1.00 | Φ1.60 | Φ3.20 | Φ4.80 | Φ6.40 | Φ8.00 |
|---|---|---|---|---|---|---|---|
| Manufacturing maximum length (m) | 280 | 400 | 160 | 365 | 160 | 90 | 60 |
Other products in this category
Quick overview of MI TC cables Kamet can supply
+ stock insight
Type K
NiCr-Ni thermocouples -270°C to +1260°C
Type J
Fe-CuNi thermocouple -210°C to +750°C
Type T
Cu-CuNi thermocouple -270°C to +370°C
Type E
NiCr-CuNi thermocouple -270°C to +900°C
Type S
PT10%RH-PT thermocouple -50°C to +1600°C
Type R
Pt13%Rh-Pt thermocouple -50°C to +1450°C