👉 China’s Leading Electric Thermocouple Manufacturer
High-accuracy thermocouples designed for furnaces, kilns, heat treatment equipment, and industrial temperature measurement systems.
- Temperature measurement up to 1700°C
- Custom probe length and diameter
- OEM manufacturing for equipment manufacturers
- Fast production and global delivery
Custom Industrial Thermocouples Built to Your Specifications
Factory-direct Type K, J, N, R and S thermocouples for furnaces, kilns, molds, ovens, process equipment and OEM temperature measurement systems.
- Type K, J, N, R and S thermocouple options
- Custom probe length, diameter, thread, flange and connector
- SS304 / SS316 / Inconel / ceramic protection tube options
- High-temperature designs for furnace and kiln applications
- Price and lead time reviewed within 24 hours for complete specs
Trusted by Engineering and Supply Chain Professionals Worldwide
What We Offer
Custom and standard industrial thermocouples (Type K, J, T, E, N, S, R, B) with multiple sheath, length, and mounting options.
Product Quality and Performance
Precision-built thermocouples made from quality alloys and 100% tested for reliable temperature measurement.
Why Choose ELEKHEAT?
Stable quality, flexible customization, and reliable lead times for industrial applications.
Type K Thermocouple
Cost-effective thermocouples for general industrial temperature measurement.
Type J / N Thermocouples
Custom Type J and Type N thermocouples for process equipment and high-temperature applications.
Type R / S Thermocouples
Platinum-rhodium thermocouples for furnace, kiln and high-temperature measurement.
Type E Thermocouple
High-sensitivity sensor for low–medium temperatures. Stable and reliable signal output.
Type T Thermocouple
Accurate low-temperature measurement. Good for refrigeration and sub-zero use.
Type B Thermocouple
Ultra-high temperature up to 1700°C. Used in furnaces and metallurgical applications.
Threaded / Flanged Probes
Custom mounting designs for tanks, ovens, molds and process equipment.
Furnace & Kiln Thermocouples
High-temperature thermocouples with ceramic or metal protection tubes.
Thermocouple with Cable / Connector
Custom lead wire, plug, connector and junction designs for OEM equipment.
Molten Aluminum Thermocouple
For measuring molten aluminum. High Corrosion-Resistant sheath.
Ni-Mo Thermocouple
For harsh high-temperature environments. Good oxidation resistance.
Pt-Pd Thermocouple
High-precision high-temperature sensor. Excellent stability and low drift.
Technical Specifications
| Type | Positive (+) | Negative (-) | Tolerance | Wire Diameter (mm) | Common Temp (°C) | Max Temp (°C) | Deviation (°C) |
|---|---|---|---|---|---|---|---|
| T | Cu 100% | Ni 45% / Cu 55% | I, II | 0.32 | 200 | 250 | ±0.5 |
| 0.65 | 250 | 300 | |||||
| 1 | 300 | 350 | |||||
| 1.6 | |||||||
| K | Ni 90% / Cr 10% | Ni 97% / Si 3% | I, II | 0.65 | 650 | 850 | ±1.5 |
| 1 | 750 | 950 | |||||
| 1.6 | 850 | 1050 | |||||
| 2.3 | 900 | 1100 | |||||
| 3.2 | 1000 | 1200 | |||||
| N | Ni 84.4% / Cr 14.2% / Si 1.4% | Ni 95.5% / Si 4.4% / Mg 0.1% | I, II | 0.65 | 850 | 900 | ±1.5 |
| 1 | 950 | 1000 | |||||
| 1.6 | 1050 | 1100 | |||||
| 2.3 | 1100 | 1150 | |||||
| 3.2 | 1200 | 1250 | |||||
| J | Fe 100% | Cu 55% / Ni 45% | I, II | 0.65 | 400 | 500 | ±1.5 |
| 1 | 450 | 550 | |||||
| 1.6 | 500 | 650 | |||||
| 2.3 | 550 | 750 | |||||
| 3.2 | 600 | ||||||
| E | Ni 90% / Cr 10% | Cu 55% / Ni 45% | I, II | 0.65 | 450 | 500 | ±1.5 |
| 1 | 500 | 550 | |||||
| 1.6 | 550 | 650 | |||||
| 2.3 | 600 | 750 | |||||
| 3.2 | 700 | 800 | |||||
| R | Pt 87% / Rh 13% | Pt 100% | I, II | 0.5 | 1400 | 1600 | ±1 |
| S | Pt 90% / Rh 10% | Pt 100% | I, II | 0.5 | 1400 | 1600 | ±1 |
| B | Pt 70% / Rh 30% | Pt 94% / Rh 6% | I, II | 0.5 | 1500 | 1700 |
Engineering Thermocouple Selection Guide
Selecting the right thermocouple requires more than choosing Type K or Type J. Engineers need to evaluate temperature range, accuracy, sheath material, response time, installation method and signal requirements.
01. Thermocouple Type Selection
Different thermocouple types are designed for different temperature ranges and applications.
- Type K: General industrial temperature measurement, wide application range.
- Type J: Low to medium temperature machinery applications.
- Type T: Excellent stability for low temperature measurement.
- Type E: High sensitivity applications.
- Type N: Better long-term stability at high temperature.
- Type R/S/B: Platinum thermocouples for extreme temperature.
02. Temperature Range & Accuracy
The selection should consider both operating temperature and required measurement accuracy.
- Standard industrial monitoring
- Heating equipment temperature control
- Furnace and kiln measurement
- Precision laboratory applications
- Calibration requirement
03. Junction Type Selection
The measuring junction affects response speed and electrical isolation.
- Grounded Junction: Fast Response Time, direct contact with sheath.
- Ungrounded Junction: Electrical isolation and better stability.
- Exposed Junction: Fast Response Time for air measurement.
04. Sheath Material Selection
The protection material must match the working environment.
- SS304: General industrial applications
- SS316 / 316L: Food processing and corrosive environments
- Inconel: High temperature oxidation resistance
- Ceramic: Extreme temperature applications
05. Probe Diameter & Response Time
Probe dimensions affect mechanical strength and response speed.
- Small diameter: Fast Response Time
- Large diameter: Higher mechanical protection
- MI cable: Flexible installation and vibration resistance
06. Cable & Connection Options
Complete thermocouple assemblies can include:
- Mineral Insulated (MI) Cable
- Thermocouple Extension Wire
- Ceramic terminal blocks
- Thermocouple connectors
- Junction boxes
Thermocouple Type Comparison
| Type | Temperature Range | Accuracy / Characteristics | Typical Applications |
|---|---|---|---|
| K Type | -200°C ~ +1260°C | General purpose, reliable | Industrial heaters, ovens, machinery |
| J Type | -40°C ~ +750°C | Good sensitivity at lower temperature | Plastic processing equipment |
| T Type | -200°C ~ +350°C | Excellent low temperature stability | Cold equipment, laboratory |
| E Type | -200°C ~ +900°C | High output signal | Precision measurement |
| N Type | -200°C ~ +1300°C | High temperature stability | Furnaces, industrial heating |
| R / S / B Type | Up to 1700°C+ | Platinum based high temperature sensor | Glass, metallurgy, high temperature furnace |
Special Thermocouple Configurations
Suitable for hazardous areas requiring explosion-proof temperature measurement.
Designed for pressure vessels, reactors and industrial pipelines.
Used in food, beverage and pharmaceutical processing systems.
Available with calibration certificates, inspection reports and traceable measurement data.
Thermocouples provide wider temperature range, while RTDs offer higher accuracy at moderate temperatures.
Recommended for long-distance industrial signal transmission and control systems.
Need Help Selecting a Thermocouple?
Provide temperature range, measuring medium, installation method, probe diameter, sheath material, electrical connection and working environment. Our engineers can recommend a suitable thermocouple design.
Industrial Applications
Industrial Furnaces
Heat Treatment
Glass Manufacturing
Petrochemical Industry
Pharmaceutical machinery
Power Generation
Aerospace
Food Processing
Need a Custom Thermocouple?
Tell us your requirements:
Thermocouple type
Temperature range
Probe length
Quantity
Our engineers will recommend the right solution and provide a quotation within 24 hours.
How we Package
Each thermocouple is securely packed in a waterproof plastic bag, providing reliable protection against moisture and contamination to ensure product integrity upon delivery.
Thermocouples Built for Reliability
Not all thermocouples are built the same.
Many buyers face recurring issues with low-cost or standard products. Here’s how we make the difference.
| Common Supplier Issues | Our Advantage |
|---|---|
| ❌ Inaccurate readings due to poor calibration | ✅ High accuracy ensured by strict calibration and quality materials |
| ❌ Short lifespan in high temperature or corrosive environments | ✅ Designed for long service life under extreme conditions |
| ❌ Standard products that don’t fit your application | ✅ Fully customized solutions based on your exact requirements |
| ❌ Inconsistent quality between batches | ✅ Stable and consistent performance across every order |
| ❌ Limited technical support or slow response | ✅ Professional engineering support with Fast Response Timee |
| ❌ Long lead times delaying your project | ✅ Efficient production with fast and reliable delivery |
| ❌ Poor resistance to oxidation, corrosion, or vibration | ✅ Advanced materials for harsh industrial environments |
| ❌ Damage during shipping due to weak packaging | ✅ Individual waterproof packaging for safe delivery |
| ❌ Lack of industry-specific experience | ✅ Extensive experience across multiple industrial applications |
| ❌ Focus on low price instead of long-term reliability | ✅ Focus on performance, durability, and long-term value |
Choose a supplier that understands your process, not just the product.
Our thermocouples are engineered to improve reliability, reduce downtime, and support your long-term operations.
What Sets ELEKHEAT Apart
30+ Years of Experience
Professional manufacturing of industrial thermocouples and heating components for global equipment manufacturers.
Strict Quality Control
Every thermocouple undergoes material inspection, welding tests and calibration verification.
Custom Manufacturing
Probe length, diameter, sheath materials, connectors and mounting structures can be customized.
Fast Production
Standard thermocouples typically ship within 5–7 days depending on quantity.
Four Steps to Product Acquisition
1) Submit Requirements
Send your specifications or drawings.
2) Engineering Support
Our engineers confirm the best solution.
3) Get a Quote
Receive a detailed quotation within 24 hours.
4) Production & Delivery
Fast manufacturing and reliable global shipping.
ELEKHEAT Certification
Frequently Asked Questions
Find answers to common questions about our custom thermocouples for industrial applications.
What information do you need to quote a custom thermocouple?
Can you manufacture thermocouples based on drawings or samples?
Which thermocouple types do you supply?
How do I choose Type K, J, N, R, or S thermocouple?
Can you make thermocouples for furnaces and kilns?
Can you provide test reports or calibration reports?
Get In Touch Now!
Send your inquiry today. Our technical team will provide a suitable thermocouple solution with specifications, pricing, and delivery options.
“Within 5 Minutes, Get a Response from Our Customer Service!”
Need Free Samples for Testing? Contact Us Now!
Phone Number
+86 159 9632 6879
0086159 9632 6879
