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Product
Polyethylene Insulated Computer Cables
- Product details
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Application Scope:
Used in automatic control systems dominated by computers, especially distributed control systems, transmitting analog and digital signals for detection, control, alarm. Adopts pair twisting, individual shielding, overall shielding for strong anti-interference performance. Complies with EN-BS5308 and GB/T18380.3.
Technical Specifications:
Rated voltage: 300/500 V.
Operating temperature: PE 70°C; XLPE 90°C.
Min laying temp: fixed -40°C, flexible -15°C.
Bending radius: ≥ 12× for copper tape shield; ≥ 6× for others.
Models (including flame retardant ZR- series):
DJYPV, DJYPVP, DJYVP, DJYP₂V, DJYP₂VP₂, DJYVP₂, DJYP₃V, DJYP₃VP₃, DJYVP₃, DJYPV₂₂, DJYPVP₂₂, DJYVP₂₂, DJYP₂V₂₂, DJYP₂VP₂-22, DJYVP₂-22, DJYP₃V₂₂, DJYP₃VP₃-22, DJYVP₃-22 and corresponding ZR- flame retardant types.
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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.
