Why the vacuum oven does not have temperature uniformity parameter

normally speaking, the common drying oven will have temperature uniformity values.

what is temperature uniformity? for natural convection drying oven, it is maximum working temperature value multiply 3%, and that of forced convection drying oven is multiplying 2.5%.

while the uniformity is different from the vacuum oven. vacuum oven is in vacuum condition, there is no heat movement of air inside, the possibility of temperature uniformity is almost not existing.because of the physical factor, It is not allowed to use the definition of average temperature specified by common hot air drying oven in the vacuum drying oven.

Those who are familiar with the parameters of the vacuum oven also know that it is useless to set this parameter under vacuum conditions. The amount of thermal radiation is inversely proportional to the square of the distance.

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