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Precious Metal Thermocouple Wire Type S

Precious Metal Thermocouple Wire Type S

Precious Metal Thermocouple Wire Type S
Precious Metal Thermocouple Wire Type S
Categories Thermocouple Cable
Brand Name: Huona
Model Number: Type S
Certification: ISO9001
Place of Origin: Shanghai
MOQ: 10g
Price: Negotiable
Payment Terms: T/T,L/C,Western Union,MoneyGram
Supply Ability: 30000 meters per month
Delivery Time: 5-21 days
Packaging Details: Carton/Wooden case
Product Name: Thermocouple Wire Type S
Positive: PtRh10
Negative: Pt
Anode wire density: 20 g/cm³
Cathode wire density: 21.45 g/cm³
Anode Wire Resistivity(20℃)/(μΩ·cm): 18.9
Cathode Wire Resistivity(20℃)/(μΩ·cm): 10.4
Tensile Strength(MPa): SP:314; SN:137
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Company Info.
Huona (Shanghai) New Material Co., Ltd.
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Precious Metal Thermocouple Wire Type S

Product Overview​


Precious metal thermocouple wire Type S, also known as Platinum-Rhodium 10-Platinum thermocouple wire, is a high-precision temperature sensing element composed of two precious metal conductors. The positive leg (RP) is a platinum-rhodium alloy containing 10% rhodium and 90% platinum, while the negative leg (RN) is pure platinum. It offers exceptional accuracy and stability in high-temperature environments, making it the preferred choice for precise temperature measurement in metallurgy, ceramics, and high-temperature industrial furnaces.​
Standard Designations​
  • Thermocouple Type: S-type (Platinum-Rhodium 10-Platinum)​
  • IEC Standard: IEC 60584-1​
  • ASTM Standard: ASTM E230​

Key Features​
  • Wide Temperature Range: Long-term use at up to 1300°C; short-term use up to 1600°C​
  • High Accuracy: Class 1 accuracy with a tolerance of ±1.5°C or ±0.25% of reading
  • Excellent Stability: Less than 0.1% drift in thermoelectric potential after 1000 hours at 1000°C​
  • Good Oxidation Resistance: Stable performance in oxidizing and inert atmospheres​
  • Low Thermoelectric Potential: Generates 6.458 mV at 1000°C (reference junction at 0°C)​
Technical Specifications​
​

Attribute​




Value​




Wire Diameter​




0.5mm (allowable deviation: -0.015mm)​




Thermoelectric Power (1000°C)​




6.458 mV (vs 0°C reference)​




Long-Term Operating Temperature​




1400°C​




Short-Term Operating Temperature​




1500°C (≤50 hours)​




Tensile Strength (20°C)​




≥120 MPa​




Elongation​




≥30%​




Electrical Resistivity (20°C)​




Positive leg: 0.21 Ω·mm²/m; Negative leg: 0.098 Ω·mm²/m​







​
Chemical Composition (Typical, %)​
​

Conductor​




Main Elements​




Trace Elements (max, %)​




Positive Leg (Platinum-Rhodium 10)​




Pt:90, Rh:10​




Ir:0.02, Ru:0.01, Fe:0.005, Cu:0.002​




Negative Leg (Pure Platinum)​




Pt:≥99.99​




Rh:0.005, Ir:0.002, Fe:0.001, Cu:0.001​







​
Product Specifications​
​

Item​




Specification​




Length per Spool​




10m, 20m, 50m,




Surface Finish​




Bright, annealed​




Packaging​




Vacuum-sealed in inert gas-filled containers to prevent contamination​




Calibration​




Traceable to national standards with calibration certificates​




Custom Options​




Custom lengths, special cleaning for high-purity applications​







​
Typical Applications​
  • High-temperature sintering furnaces in powder metallurgy​
  • Glass manufacturing and forming processes​
  • Ceramic kilns and heat treatment equipment​
  • Vacuum furnaces and crystal growth systems​
  • Metallurgical smelting and refining processes​
We also provide S-type thermocouple assemblies, connectors, and extension wires. Free samples and detailed technical datasheets are available upon request. For critical applications, we offer additional certification of material purity and thermoelectric performance.
Product Tags:

Type S thermocouple wire

  

Precious metal thermocouple cable

  

High temperature thermocouple wire

  
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Precious Metal Thermocouple Wire Type S

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