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Product
Thermocouple Compensating Cables
- Product details
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Application Scope:
Thermocouple compensating cables are used to extend the thermocouple electrodes, i.e., to move the cold junction of the thermocouple, and connect with display instruments to form a temperature measurement system. The product quality is superior to the general national standards. The insulation and sheath adopt imported high-quality fluoroplastics, and adopt a new continuous extrusion process, endowing the cable with excellent acid resistance, alkali resistance, wear resistance and non-flame propagation properties. It can be immersed in oil and water for long-term use. Operating temperature: -60°C ~ 260°C, reaching international advanced level. Mainly used in various temperature measuring devices, widely applied in nuclear power, petroleum, chemical, metallurgy, electric power and other industries.
Model Designation:
1. Thermocouple type: S—Platinum-rhodium 10-platinum; N—Nicrosil-nisil; K—Nickel-chromium-nickel silicon; E—Nickel-chromium-copper nickel; J—Iron-copper nickel; T—Copper-copper nickel.
2. Type or purpose: X—Extension type; C—Compensation type.
3. Usage category: G—General use; H—Heat resistant.
4. Accuracy class: A—Precision; B—General.
5. Insulation material: V—PVC (70°C or 105°C); B—Alkali-free glass yarn; F—PTFE; P—Tinned copper or bare copper shield.
6. Sheath material: V—PVC (70°C or 105°C); B—Alkali-free glass yarn; F—PTFE; P—Tinned copper or bare copper shield.
7. Structure: R—Stranded flexible core; P—Shielded.
8. Specification: Number of pairs × cross-sectional area.
Example:
KC-HA-FFRP 2×1.5: Heat-resistant, precision-grade, shielded flexible extension K-type compensating cable 2×1.5 mm²
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Q
What is a thermocouple?
A
Thermocouples are the preferred solution for extreme temperature applications. They consist of two dissimilar metal wires joined at the measuring end, generating a voltage proportional to the temperature difference.
Working Principle: When two different metals are connected, the thermoelectric effect produces a voltage at the junction. This voltage increases with rising temperature, allowing measurement via reference tables.
Key Advantages:
• Temperature Range: -270°C to 2300°C (depending on type)
• Fast Response Time (typically 0.1–10 seconds)
• Robust Construction, vibration-resistant
• Relatively Low Cost
• No External Power Required
Q
What is the difference between RTD and thermocouple?
A
• RTD (Resistance Temperature Detector): Based on the principle that a metal conductor's resistance increases with temperature, it converts resistance measurements into temperature readings.
• Thermocouple: Operates on the Seebeck effect, where two dissimilar metals in contact generate a thermoelectric voltage proportional to temperature differences.
Features
• RTD: High accuracy, stable signal, excellent linearity, ideal for low to medium temperatures.
• Thermocouple: Simple structure, fast response, high-temperature resistance, wide measurement range.
Pros & Cons
• RTD Pros: High precision, strong anti-interference, reliable low-temperature performance.
Cons: Limited upper temperature range, bulkier size, slightly slower response.
• Thermocouple Pros: Broad temperature range, high-temperature tolerance, rapid response, suitable for moving/surface measurements.
Cons: Lower accuracy at low temperatures, requires cold junction compensation, weaker signal prone to interference.
