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The influencing factors of the uniformity of the high and low temperature test box
When selecting a high and low temperature test box, it is more about whether the test conditions you want to achieve through his technical parameters such as temperature range, uniformity, volatility, heating rate, and cooling rate are matched. The uniformity is a parameter that we have to pay attention to, but we always have a uniform failure during the use of the device. Then the four reasons for the uniformity of the test box:
1. Sealing
The sealing of the box is not good. For example, the door leaks, which affects the temperature of the device studio.
2. Excessive volume of the test product
If the detection temperature deviation Test products are required to be placed indoor. When the volume of the test product is too large, or the place of placement or location is not appropriate, the air convection is blocked. It will also cause a large temperature deviation.
Thermal conductivity of the box wall
Due to the thermal conductivity of the high and low temperature test box box wall, the heat loss such as the heat leakage of the high temperature box or the low temperature box leaks of the low temperature box, in order to compensate the heat loss The wind temperature is higher than the work temperature in the box, and the air supply temperature of the low temperature box is lower than the work temperature in the box. Due to the inevitable air supply temperature difference, the temperature is uneven.
4、结构
The structure of the equipment of high and low temperature test box equipment largely affects uniform temperature in the middle of the work. Because the structure is difficult to be completely symmetrical, it is uniform to the temperature to adversely affect. In front of the gate, the air conditioning room was at the back of the box, and the wind was sent back to the wind. This structure has good symmetry left and right, which can be easily reached to the left and right temperature
evenly.
