Silver Pt-Rh10 S/R/B Type Thermocouple Wire Bare Round Wire For 1600 Degrees

Product Description:

Noble metal thermocouple wire is a type of thermocouple wire made from precious metals, typically used in high-temperature and high-precision temperature measurement applications.

The R type is made of Pt87Rh-Pt, while the S type is made of Pt-Rh10. Both of these types are designed to provide accurate temperature readings in extreme conditions. The R type thermocouple wire is widely used in high-temperature applications, while the S type is commonly used in lower temperature applications.

One of the key benefits of the Noble Thermocouple Wire is its ability to withstand high temperatures. This wire can withstand temperatures of up to 1600°C, making it perfect for use in high-temperature applications. It is also resistant to corrosion, which ensures that it lasts longer than other types of wires.

The main characteristics and advantages of noble metal thermocouple wire are as follows:

1. High melting point and high-temperature resistance: Noble metal thermocouple wires can withstand extremely high temperatures, allowing them to measure temperatures up to 1700°C or even higher in some cases, which is suitable for high-temperature measurement scenarios such as in metallurgy, glass manufacturing, and high-temperature industrial processes.
2. Chemical stability: They show excellent chemical stability in most environments and are not easily oxidized or corroded. This makes them suitable for use in harsh chemical environments, ensuring the stability and accuracy of temperature measurement over a long period.
3. High measurement accuracy: The thermoelectric potential generated by noble metal thermocouple wires is stable, resulting in accurate temperature measurement results and good repeatability, which is crucial for applications that require high-precision temperature control and monitoring.
4. Long-term stability: The physical properties of noble metal thermocouple wires change little over time, enabling them to provide long-term stable measurement results.
5. Low creep rate: Even under continuous high temperature, the shape and size of the wires can remain stable, which is essential for maintaining the measurement accuracy of the thermocouple.
6. Good thermal conductivity: It helps the thermocouple respond quickly to temperature changes, allowing for more accurate and timely temperature measurement.

Features:

• Product Name: Noble metal  Thermocouple Bare Wire
• Shape: Round Wire
• Tolerance: -/+1~ -/+1.5 Degrees
• Lead time: 3~7 Days
• Color: Silver
• Temperature Range: 0°C to +1600°C
• Keywords: R type thermocouple, thermocouple wire

Technical Parameters:

The maintenance of noble metal thermocouple wire mainly includes the following aspects:

1. Regular cleaning:

• Acid washing: Utilize the oxidizing ability of acid to remove organic matter and other impurities that can be dissolved by acid on the surface of the noble metal thermocouple. First, coil the thermocouple wire into a circle with a diameter of about 80 mm and place it in a beaker. Then, pour in 30% to 50% (by volume ratio) of chemically pure dilute hydrochloric acid (or dilute nitric acid) and soak for one hour. After that, take it out and put it in the beaker again, and boil it with distilled water several times to completely remove the acid solution. The purpose of acid washing is to clean some organic matter and oxides on the electrode surface.

    Sodium borate cleaning: After acid washing, the used noble metal thermocouple needs to be cleaned with sodium borate. Hang the electrode of the noble metal thermocouple on the platinum wire in the annealing cabinet, and then adjust the current to heat the thermocouple electrode to 1100°C. Touch the hot electrode with a lump of sodium borate to make the sodium borate solution flow down along the electrode. After cleaning, gradually reduce the current, and finally cut off the power. Take it down and coil it into a circle with a diameter of 80 mm and put it in a beaker, and boil it with distilled water several times to completely precipitate the borate.

2. Annealing treatment: Annealing is to remove the internal stress in the electrode, improve the crystal phase of the high-temperature noble metal thermocouple, and enhance its stability. There are generally two annealing methods: electric annealing and furnace annealing. By controlling the appropriate annealing temperature and time, the desired purpose can be achieved.

3. Proper storage: When the noble metal thermocouple wire is not in use, it should be stored in a dry, clean, and dust-free environment to avoid being affected by moisture, dust, and other factors. At the same time, it should be stored separately from other metal objects to prevent scratches and collisions.

4. Check during use: Regularly check the connection status of the thermocouple wire during use to ensure that the connection is firm and there is no loosening or oxidation at the connection point. If any abnormalities are found, they should be dealt with in time to ensure the accuracy of temperature measurement.

5. Avoid overheating and overcooling: During the use of the noble metal thermocouple wire, avoid rapid heating and cooling to prevent the thermocouple wire from being damaged due to thermal stress.

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