But we need to test the reaction of the same item under the condition of short-time thermal expansion and contraction. The cold-thermal shock test box can test the data structure or composite data, and the tolerance degree under the instantaneous connecting environment of extremely high temperature and extremely low temperature, so as to test the chemical change or physical loss caused by thermal expansion and contraction in the shortest time. Wound. So what should we pay attention to when purchasing the cold and hot shock test box? What preparations are needed?

1. Place demand has a scale of 3 m*3 m*3.5 m in width and depth. This is mainly for:

A. Facilitate the movement of people.

B. Facilitate subsequent repair and protection.

C. In this way, an outstanding heat dissipation effect can be achieved.

2. Check corridors, corridors, elevator doors, laboratory doors and other related scales in advance. These scales need more than the external scales of cold and heat shock test box equipment, so as to successfully arrive at the laboratory for installation, debugging, training and other operations.

3. Excellent ventilation is required around the laboratory, and windows with large demand are often opened to keep ventilation smooth.

4. Has the laboratory equipped with power supply, air switch, copper core wire and so on in advance? (The size of copper core wire depends on the size of the equipment, so the demand of power supply, air switch and copper core wire asks the equipment supplier.)

5. Where the power supply voltage is too low, an autotransformer should be installed to improve the voltage to the rated value, so as not to burn the compressor motor because the voltage is too low to start.

6. Use special switches for power switches. Do not use SW plugs with other electrical machinery. Do not place floors or wet local soft wires to avoid trampling or leakage.

7. Air-conditioning equipment is needed in the laboratory to control the temperature at room temperature. This is conducive to the service life and functional stability of the equipment.

8. Although the material in the test box is made of high-grade stainless steel, it is easy to operate the machine parts and electronics when the running water is wet, which has adverse effects and reduces the efficiency, and should be avoided as far as possible.