The rapid temperature change tester uses the temperature acceleration technique (the product produces alternating expansion and contraction when circulating in the upper and lower extreme temperatures) under the design strength limit to change the external environmental stress and generate thermal stress and strain in the product. Accelerating the stress to make the sputum hidden in the product [potential part material 制, process 瑕疵, process 瑕疵] to avoid the failure of the product during the use of the environmental stress, resulting in unnecessary losses, It has a significant effect on improving product shipment yield and reducing the number of repairs. In addition, the stress screen itself is a process stage process, not a reliability test, so stress screening is a 100% procedure for the product. Then Shanghai Bao tries to talk about the things that need attention in the use:

1. Circuit breaker and over-temperature protector This kind of protection equipment that provides test products and the personal safety of the operator. The rapid temperature change test chamber needs to pay attention to the test process.

2. Unless you have to open it if you have to open it, please do not open the door casually. Otherwise, it may cause adverse consequences: the inside of the door still maintains high temperature, the high temperature air may trigger a fire alarm and cause a mistake, and the rapid temperature and humidity change test box The gas is flushed out of the box. During the experiment, the switch box has certain damage to the compressor. Unless the test requires, the customer is not recommended to switch frequently during the experiment;

3. When using the test box, it must be ensured that it is safe and reliable grounding to avoid static electricity induction;

4. When the test chamber completes the low temperature operation, the good temperature of the Zui is dried at 60 °C for about 30 minutes before opening the door to avoid affecting the measurement time in the subsequent test or causing the evaporator to freeze.

5, the installation position of the wet ball gauze must be accurate, in order to measure the correct relative humidity; when the box is in operation, please do not touch the hand to avoid the rapid temperature and humidity change test box electricity or the fan is injured and the danger occurs ;

6. When the rubber plug of the bleed valve is difficult to rotate, apply a proper amount of grease to the inside.

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