During the use of the Vacuum tube furnace, the temperature sometimes varies. The problem involved at this time is how to calibrate.

1. Use reference material to calibrate at multiple points.
(at least one reference material is calibrated at a point, near the usual temperature.) For example, the standard melting point of AU is 1063 ° C, blown into the furnace, and the ball indicates that the furnace temperature exceeds 1063 ° C, if there is no change It indicates that the furnace temperature is lower than 1063 ° C, and the temperature change in the furnace temperature is controlled to determine the melting point of AU. The multi-point method is to increase the accurate temperature point.
2. Use the temperature measurement ring for calibration.
The working principle of the temperature measuring ring is based on the linear shrinkage in the temperature of its working range, so as to give the actual accumulated heat of the temperature measuring ring and the finished product. The measured temperature can be converted according to the test temperature obtained from the conversion table. Ringing temperature.
3. Calibrate using a thermocouple.
Thermocouples are commonly used temperature measuring components that accurately obtain temperature values, but must be properly measured using thermocouples.
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