Which thermocouple is better for measuring the temperature of trichlorosilane synthesis furnace?
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The control temperature of our company's trichlorosilane synthesis furnace is generally around 350 degrees, but when HCL is not added, the temperature must be raised to above 400 degrees first. We use type E, but the thermocouple measurement range is 0-600 degrees. Do you think this is suitable for long-term use? Or is it better to use the K type? What type of thermocouple does your factory use? Please give me your opinion.
In this temperature range, both E-type and K-type are available.
The letter E is missing, which means the long-term range of type E is 0-600 degrees.
The ones used in our factory are all K-type. Selection of measurement accuracy and temperature measurement range: When the operating temperature is between 1300 and 1800°C and high accuracy is required, type B thermocouples are generally used. ； The required accuracy is not high, and the atmosphere allows the use of tungsten-rhenium thermocouples. Above 1800°C, tungsten-rhenium thermocouples are generally used. ； The operating temperature is 1000~1300℃, which requires high accuracy and can be used with S-type thermocouples and N-type thermocouples. ； Type K thermocouples and type N thermocouples are generally used below 1000°C, and type E thermocouples are generally used below 400°C. ； T-type thermocouples are generally used for measurements at 250°C and negative temperatures. T-type thermocouples are stable and highly accurate at low temperatures.