High-low temperature test chamber should be used in the use of issues and operating specifications
When using the high and low temperature tester, what problems should be paid attention to and how to comply with the operating specification when using it? Here are our professional technicians to answer these questions for you:
Precautions:
1. Do not connect the power supply of the sample to the power supply of the device, otherwise it will increase the power load of the device. Unless the device has a sample power connector. 2. It is strictly prohibited to test flammable, explosive, highly corrosive, and radiated items.
3. Do not carry or overhaul the device while it is powered on or during operation.
4, high-temperature burns, high and low temperature test chamber in the high temperature test box temperature is high. During the test or at the end of the test, if you need to open the box, be careful when you open the door. Remember to walk in the direction of the opening to avoid burns.
5, low temperature frostbite, high and low temperature test chamber in the low temperature test box temperature is very low. During the test or at the end of the test, special care must be taken to open the door to avoid frostbite.
6, high temperature burns, high and low temperature test chamber in the high temperature test box temperature is high. During the test or just after the test, be careful to open the door to avoid burns.
7. Electric shock, although the equipment has a sound protection against electric shock, but still need to pay attention, especially the electrical control system, under working conditions, do not touch the electrical parts.
Steps:
In general, the operation of high and low temperature chambers is divided into five parts: pretreatment, initial detection, test, recovery, and final detection. The following Dongguan Haotian and everyone to share the detailed process content:
1. Pretreatment: The sample to be tested is placed under normal test atmospheric conditions until a stable temperature is achieved.
2. Initial detection: The sample to be tested is compared with the standard requirements. After meeting the requirements, it can be directly placed in the high-low temperature impact test box. 3. Test:
1) The test sample should be placed in the test box according to the standard requirements, and the temperature in the test box (chamber) should be raised to the specified point, and maintained for a certain time until the test sample reaches the temperature stability, whichever is longer.
2) After the high temperature period is over, transfer the test sample to a low temperature test chamber (chamber) that has been adjusted to -55°C within 5 minutes, and maintain it for 1 hour or until the test sample reaches a stable temperature, whichever is longer.
3) After the low temperature period is over, the test sample shall be transferred to a high temperature test chamber (chamber) that has been adjusted to 70°C within 5 minutes, and held for 1 hour or until the test sample reaches a stable temperature, whichever is longer.
4) Repeat the above experimental method to complete three cycles. Depending on the sample size and the size of the space, the time may be slightly wrong.
4. Recovery: After the test sample is removed from the test chamber, it should be restored under normal test atmospheric conditions until the test sample reaches a stable temperature.
5. Last test: assess the test results by comparing the degree of damage in the standard with other methods.
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