Your Professional Thermocouple Compensation Wires Supplier
Chongqing Duchin Instrument Co., Ltd. specializes in the research, development, manufacturing, and distribution of temperature sensors and related equipment. The company’s primary product offerings include thermocouples, resistance temperature detectors (RTDs), compensation cables, electric heaters, thermocouple vacuum calibration devices, and composite metal protective tubes. In addition, the company undertakes instrumentation and control system projects based on customer requirements.
Why Choose Us
Team & Service
Our team is a dynamic,Quickly respond to customer needs, experienced technical team, provide design and customization services.
Wide Range of Applications
Our products are widely used in FTTH (Fiber to the Home) and FTTA (Fiber to the Antenna) applications.
Our Certificates
We have established a quality assurance system compliant with ISO9001 standards. Our products are strictly tested according to IEC, GR-326-Core, GR-3120-Core, GR-771-Core, and GR-1221-Core standards to ensure superior performance and reliability.
Broad Market
Our products are exported to a wide range of Market layout in Asia, Europe, Middle east, North America, South America, Africa.Products are exported over 50 countries, and are widely recognized by customers.
Parameter
|
Product Name |
Type k thermocouple wire |
Type J thermocouple wire |
|
Calibration |
K |
J |
|
Conductor |
NiCr10-NiSi3 |
Fe-Constantan |
|
Type |
Compensation type Extension type |
Compensation type Extension type |
|
Insulation material |
PVC PTFE Fiberglass Silicone |
PVC PTFE Fiberglass Silicone |
|
Protection material |
PVC PTFE Fiberglass Silicone |
PVC PTFE Fiberglass Silicone |
|
CORE CROSS-SECTIONAL VS. DIAMETER |
0.2-0.2mm²-φ0.52 0.5-0.5mm²-φ0.8 1.0-1.0mm²-φ1.13 1.5-1.5mm²-φ1.37 2.5-2.5mm²-φ1.76 |
0.2-0.2mm²-φ0.52 0.5-0.5mm²-φ0.8 1.0-1.0mm²-φ1.13 1.5-1.5mm²-φ1.37 2.5-2.5mm²-φ1.76 |
|
CORE TYPE |
Solid Stranded |
Solid Stranded |
|
SHIELDING LAYER |
Copper Tinned wire Steel wire |
Copper Tinned wire Steel wire |
Types of Thermocouple Compensation Wires
The thermocouple compensation wires produced by our company mainly include the following types:
Type K Thermocouple Wire
Within a certain temperature range, a pair of mutually insulated wires has the same thermoelectric characteristics as the connected thermocouple wires is called a pair of thermocouple compensation wires.
Type J Thermocouple Wire
Type J thermocouple wire is divided into extend-type and compensation-type according to the core material, normal type (VV) and heat-resistant type (FF, BB) according to the operating temperature, and normal class and precision class according to the accuracy decided by thermoelectric characteristics.
Type S Thermocouple Wire
For type s thermocouple wire,only be compensation type, normal type (VV) and heat-resistant type (FF) according to the operating temperature. In order to ensure measurement accuracy, the compensation wire with the same type code must be used between the thermocouple and the display instrument.

Advantages of Thermocouple Compensation Wires
Extending the Thermocouple Connection
Thermocouples are typically installed in high-temperature environments, and it is impractical to use expensive thermocouple materials for long wiring. Compensating wires allow thermocouples to be extended to the measuring instrument economically.
Reducing Measurement Errors
If standard copper wires were used to connect a thermocouple to an instrument, additional thermoelectric junctions would be introduced at the connection points, creating extra voltage and leading to inaccurate temperature readings. Compensating wires match the thermocouple characteristics within a specific range to reduce these errors.
Cost Reduction
Thermocouples made of materials such as platinum and rhodium can be extremely expensive. Using compensating wires, which are made of more affordable but compatible alloys, significantly reduces the cost of a thermocouple system while maintaining accuracy.
Applications of Thermocouple Compensation Wires
HVAC Systems Management
In commercial buildings and residential spaces alike, Heating, Ventilation, and Air Conditioning (HVAC) systems rely on thermocouple compensation wires for temperature sensing and regulation. By ensuring comfortable indoor environments, these cables contribute to enhanced occupant comfort and energy efficiency.
Precision in Food Processing
The food industry depends on thermocouple compensation wires to maintain precise temperatures during various stages of food processing, including cooking, chilling, and storage. By upholding strict temperature standards, these cables safeguard food quality and safety, minimizing the risk of contamination or spoilage.
Medical Equipment and Devices
Thermocouple compensation wires play a crucial role in medical equipment, including thermometers, incubators, and sterilizers. Their accuracy and reliability make them indispensable for monitoring and controlling temperatures in healthcare settings, ensuring optimal patient care and safety.
Automotive Performance Optimization
Within automotive systems, thermocouple compensation wires are deployed for monitoring temperatures in engines, exhaust systems, and climate control units. By providing real-time temperature data, these cables facilitate engine optimization, emission control, and overall vehicle performance.
Aerospace Exploration and Innovation
In the aerospace industry, thermocouple compensation wires are utilized in spacecraft, aircraft, and ground support equipment to monitor temperatures in extreme environments. Their resilience to high temperatures and rapid temperature changes makes them ideal for aerospace applications, where precision and reliability are non-negotiable.
Power Generation and Distribution
Power plants rely on thermocouple compensation wires for monitoring temperatures in boilers, turbines, and electrical components. By detecting temperature variations and potential failures, these cables contribute to the efficient operation of power generation systems, ensuring uninterrupted electricity supply.
Difference Between Thermocouple Compensation Wire and Extension Wire
|
Feature |
Compensating Wire |
Extension Wire |
|
Material |
Different from thermocouple but similar in properties |
Same material as thermocouple |
|
Accuracy |
Lower accuracy, but sufficient for moderate environments |
Higher accuracy, used in critical applications |
|
Cost |
More affordable |
Expensive |
|
Usage |
Industrial applications where small errors are acceptable |
Precision applications needing exact thermoelectric properties |
Precautions for Using Thermocouple Compensation Wire
Maintain Proper Polarity
Always connect the positive and negative leads correctly. Reversing polarity can introduce incorrect readings.
Avoid Long Runs of Compensating Wires
While compensating wires are useful for extending connections, excessive lengths may introduce resistance and potential voltage drops, affecting accuracy.
Use Proper Insulation
Select insulation materials suited to the operating environment to prevent degradation and electrical leakage.
Keep Away from Electrical Noise
Route compensating wires away from power cables, motors, and other sources of electromagnetic interference to maintain signal integrity.
Regularly Calibrate and Inspect Connections
Ensure that all connections are secure and periodically check for wear, corrosion, or other issues that could affect temperature readings.
Ordering Process
Send your detailed request→Feedback with quotation→Confirm price and some details →Provide PI→ Make payment→Start production→Quality checking→Delivery→After service.
Packaging and Shipping
|
Packaging |
All products, we will pack them carefully, items will be pakaged with PP bag, carton or any other protective stuff if necessarily, then placed in pallets or plywood case. |
|
Shipping |
We ship by Express, by air, by sea, by train. Normally we checked and compare, then provide customer the most proper shipment method. |
Our Factory
The establishment of Chongqing Duchin Instrument CO., LTD was marked in 1995, located at No. 290 Fengshixing Road, Beibei District, covers area over 11'000m2.




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FAQ
As one of the leading thermocouple compensation wires manufacturers in China, we warmly welcome you to buy thermocouple compensation wires made in China here from our factory. All customized products are with high quality and competitive price.
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