Precious Metal Thermocouple Wire Type S

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.

• Thermocouple Type: S-type (Platinum-Rhodium 10-Platinum)
• IEC Standard: IEC 60584-1
• ASTM Standard: ASTM E230

• 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)

• 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.