Thermocouple Extension Compensating Alloy Wire For Type J Temperature With High Thermal EWF Range
Thermocouple extension compensating wires are essential for connecting thermocouples to measuring instruments while maintaining the accuracy of temperature readings over extended distances. For Type J thermocouples, which use Iron (Fe) for the positive leg and Constantan (CuNi) for the negative leg, JX extension wires are designed to extend the thermocouple leads while compensating for the thermoelectric properties of the original thermocouple materials.
EMF of compensating wire and the tolerance
Themocouple No. indexing | Compensation wire tpye | Usag Classification | Measuring junction temperature/℃ | Standard EMF value/μV | Precision grade | General grade |
Tolerance μV | Thermal EWF range μV | Tolerance μV | Thermal EWF range μV |
J | JX | G | -25 | -1239 | ±62 | -1177~-1301 | ±123 | -1116~-1362 |
100 | 5269 | 5207~5331 | 5146~5392 |
H | -25 | -1239 | ±62 | -1177~-1301 | ±123 | -1116~-1362 |
100 | 5269 | 5207~5331 | 5146~5392 |
200 | 10779 | 10717~10841 | 10656~10902 |
Compensating wire reciprocating resistance
Compensation wire type | Reciprocating resistance at 20℃ Ω/m (Less than) |
0.2mm² | 0.5mm² | 1.0mm² | 1.5mm² | 2.5mm² |
JX | 3.25 | 1.3 | 0.65 | 0.43 | 0.26 |
JX Alloy Extension Wire
- Composition: JX extension wire is made from alloys designed to match the thermoelectric properties of Iron (Fe) and Constantan (CuNi) to maintain the accuracy of the Type J thermocouple.
- Properties: JX extension wires are specifically formulated to ensure that the thermocouple signal is transmitted accurately over long distances, without altering the temperature readings.
- Applications: Used to extend the leads of Type J thermocouples while ensuring the accurate transmission of temperature data from remote locations to the measuring instrument.
Key Properties of JX Extension Wire:
- Accuracy: JX extension wire is designed to maintain the original thermoelectric properties of the Type J thermocouple, ensuring accurate temperature measurement even at longer distances.
- Temperature Range Compatibility: These extension wires are optimized to match the temperature range of Type J thermocouples, typically from -40°C to 750°C.
- Corrosion and Oxidation Resistance: JX wires are designed to resist oxidation and corrosion, ensuring long-term reliability in various industrial environments.
- Durability: The wires are durable and able to withstand temperature fluctuations, mechanical stress, and environmental conditions without degrading their performance.
Applications of JX Extension Wire:
- Industrial Temperature Monitoring: Used in furnaces, ovens, and heat treatment systems for temperature control and monitoring.
- Laboratories and Research: Commonly used in laboratory settings for temperature measurements, especially in controlled environments.
- Process Control: Employed in various manufacturing processes where precise temperature measurement is essential for quality control.
Conclusion:
JX thermocouple extension compensating alloy wire provides a reliable solution for extending Type J thermocouple leads without compromising the accuracy of the temperature readings. The alloy ensures that the thermoelectric properties of the Type J thermocouple are maintained over extended distances, making it ideal for a variety of industrial, laboratory, and research applications. The JX wire offers excellent resistance to oxidation and corrosion, ensuring durability and performance even in demanding environments. Whether used in temperature monitoring systems or process control, JX extension wire guarantees precise and reliable temperature measurements.


