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:

 
01
 

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.

 
02
 

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.

 
03
 

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.

Type K Thermocouple Wire

 

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
 
01/

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.

02/

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.

03/

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.

04/

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.

05/

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.

06/

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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Certifications

 

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FAQ

 

Q: What is the need for compensating leads in a thermocouple?

A: Thermocouple compensating cables are used to connect thermocouple sensors to remote connection points such as control cabinets, gauges, regulators, etc., making it possible to transmit the sensor signal over long distances without signal loss and connect to processing units.

Q: What happens if you use the wrong thermocouple wire?

A: If you mistakenly connect polarity from the terminal box etc to the terminal of the receiving instrument, the difference between the temperature of the terminal box part and the temperature of the receiving instrument terminal affects the error.

Q: Do thermocouple wires need to be calibrated?

A: This is important to note because if a section of the thermocouple circuit is not homogeneous, it can result in a different voltage being generated leading to an overall error in measurement. Consequently, thermocouples require calibration to ensure accurate temperatures are derived.

Q: Is compensating cable better than extension cable?

A: Compensating cable is a more cost effective solution than extension cable, but the maximum ambient temperature allowed is lower, approximately 100… 200 °C depending on the insulation material.

Q: What happens if a thermocouple is wired backwards?

A: If the Leads on your thermocouple are reversed, the temperature measured will show to be varying in the opposite direction relative to ambient temperature. Use the chart below to make sure that the positive and negative connections are in the proper order.

Q: Does thermocouple wire size matter?

A: Thicker gauge wires allow for higher temperatures, better durability, and longer run lengths. Thinner gauge wires introduce higher electrical resistance which can cause signal degradation over longer lengths, but they are preferred when extra flexibility or lower costs are needed.

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.

Thermocouple Wire, Tungsten Rhenium Inconel600 Thermocouple, Head Mounted Temperature Transmitter