
Our Type J MI Thermocouple cable is a reliable, cost-effective solution for industrial temperature monitoring. Made with Iron (Fe) and Constantan (CuNi) conductors, it’s insulated with high-purity magnesium oxide (MgO) and encased in a rugged stainless steel sheath. This setup ensures accurate readings from -210°C to 750°C, perfect for moderate-temperature industrial applications. The Type J cable is a go-to choice for its affordability and performance in environments where high temperatures aren’t a concern.
Why Choose Our Type J MI Thermocouple Cable ?
We’ve designed our Type J MI cable to deliver precision and durability without breaking the bank. The stainless steel sheath offers excellent corrosion resistance and mechanical strength, making it ideal for tough industrial settings. Whether you’re monitoring temperatures in a plastic extrusion line or an industrial oven, our cables provide consistent results. We also offer customization options—pick your cable length, diameter, or calibration to fit your exact needs. Compliant with IEC 60584 Class 1 and ASTM E230 standards, our cables guarantee accuracy and reliability.
Electrical Performance
| Parameter | Low-Voltage Cable (0.6/1kV) | Medium-Voltage Cable (6~35kV) | High-Voltage Cable (110kV Min) |
| Rated Voltage (U₀/U) | 0.6/1 kV | 6/10-26/35 kV | ≥110 kV |
| Insulation Resistance (MΩ·km) | ≥100 | ≥200 | ≥500 |
| AC Voltage Withstand (kV) | 3.5 | 21~52 | ≥160 |
| DC Resistance of Conductor (Ω/km) | Compliance to IEC standards | Compliance to IEC standards | Compliance to IEC standards |
Mechanical Performance
| Performance Indicator | Steel Tape Armored | Steel Wire Armored | Aluminum Tape/Stainless Steel Armored |
| Tensile Strength (N/mm²) | 300-500 | 400-600 | 150-250 |
| Compression Performance (N) | ≥3000 | ≥1500 | ≥1000 |
| Minimum Bend Radius | 6×Cable Outer Diameter | 10×Cable Outer Diameter | 8×Cable Outer Diameter |
Thermal Performance
| Working Temperature Range (°C) | -40 to +90(Standard Insulation) |
| Short-Circuit Temperature (5s) (°C) | 160~250(depending on material) |
| Flame Retardant Performance | Compliace to IEC 60332 Standard |
The thermocouple market is on a steady rise, valued at $1.1 billion in 2023 and expected to reach $1.9 billion by 2032, with a CAGR of 5.8%. What’s driving this? The push for automation in manufacturing, food processing, and HVAC systems is increasing demand for cost-effective, reliable temperature sensors. Industries are also focusing on energy efficiency and process optimization, where precise temperature control is key. Our Type J MI cables are tailored to meet these needs, offering a budget-friendly solution for moderate-temperature applications.
Applications
Our Type J MI thermocouple cables are built for versatility. In plastic processing, they monitor extruders and molding machines to ensure consistent quality. Food processing plants use them to track oven and refrigeration temperatures for safety and compliance. HVAC systems rely on them for efficient climate control, while heat treatment facilities use them for precise temperature profiling. Their stainless steel sheath makes them durable in environments with moderate corrosion, ensuring long-lasting performance across these industries.
Comparison Table: Type J vs. Other Thermocouple Types
Parameter | Type J (Fe-CuNi) | Type K (NiCr-NiAl) | Type N (NiCrSi-NiSi) | Type T (Cu-CuNi) |
|---|---|---|---|---|
Temperature Range | -210°C to 750°C | -270°C to 1260°C | -270°C to 1260°C | -270°C to 370°C |
Accuracy (Class 1) | ±1.1°C or 0.4% | ±1.1°C or 0.4% | ±1.1°C or 0.4% | ±0.5°C or 0.4% |
Oxidation Resistance | Poor | Good | Excellent | Moderate |
Stability (300-500°C) | Low | Moderate | High | High |
Sulfur Resistance | Poor | Moderate | Excellent | Poor |
Common Applications | Plastics, ovens | Furnaces, power plants | Sulfur recovery, aerospace | Cryogenics |
Sheath Materials | Stainless Steel | Inconel, SS | Inconel, Nicrobell, SS | SS, Copper |
Cost | Low | Moderate | Slightly higher | Low |
Our Type J MI thermocouple cables stand out for their quality and affordability. While others may offer basic cables, we provide fully customizable options with stainless steel sheaths optimized for durability and corrosion resistance. Every cable is rigorously tested for calibration, insulation resistance, and thermal performance to ensure reliability. With over 500,000 meters of cable in stock, we deliver fast without sacrificing quality. Our online portal and multilingual support team make ordering and technical assistance seamless, saving you time and effort.
Why We’re the Best Choice
Our Type J MI thermocouple cables are designed to keep your operations running smoothly. With their cost-effective performance, customizable options, and durable stainless steel sheath, they’re perfect for industries like manufacturing, food processing, and HVAC. Backed by years of expertise and a commitment to quality, our cables deliver reliable temperature monitoring for your industrial needs. Contact us today to customize a solution that fits your application perfectly.




About Us:
Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications.
For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.

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FAQs:
What is a Type J MI thermocouple cable?
A Type J MI thermocouple cable is a mineral-insulated cable with Iron (Fe) and Constantan (CuNi) conductors, designed for accurate temperature measurements from -210°C to 750°C in industrial settings.What materials are used in Type J MI thermocouple cables?
It features Iron and Constantan conductors, magnesium oxide (MgO) insulation, and a stainless steel sheath for durability and corrosion resistance.What are the main applications for Type J MI thermocouple cables?
They’re used in industrial ovens, heat treatment, plastic processing, and low-to-medium temperature industrial processes.How does Type J compare to Type K thermocouples?
Type J has a narrower temperature range (-210°C to 750°C) and is less resistant to oxidation than Type K, but it’s cost-effective for lower-temperature applications.Which industries use Type J MI thermocouple cables?
Industries like manufacturing, plastics, food processing, and HVAC rely on them for precise temperature monitoring in moderate conditions.Why is the stainless steel sheath important for Type J cables?
The stainless steel sheath provides excellent corrosion resistance and mechanical strength, ensuring reliable performance in industrial environments.What are the industry trends for Type J MI cables?
Demand is growing due to automation in manufacturing and food processing, with the thermocouple market projected to grow at a CAGR of 5.8% through 2032.Can Type J MI thermocouple cables be customized?
Yes, we offer custom lengths, diameters, and calibration options to meet specific industrial temperature monitoring needs.