Starting Temperature Requirement Of Three Zone Thermal Shock Test Chamber

Although the general Three Zone Thermal Shock Test Chamber standard does not mention or do not specify the initial temperature of the thermal shock test, it is a problem that must be considered when the test is carried out, because it involves the end of the test at low or high temperatures. State, which determines whether the product needs to be dried, resulting in extended test time.

If the test is completed after the low temperature standard test product is taken out from the Thermal Shock Test Chamber Wholesaler, it should be restored under normal test atmospheric conditions until the sample reaches the temperature stable. This operation will inevitably cause condensation on the surface of the test sample. The effect of the introduction of temperature on the product. Thereby changing the nature of the test.

In the GBJ 150 implementation guide, in order to eliminate this effect and avoid long-term recovery and prolong the test implementation time, the sample can be recovered in a 50-degree high temperature chamber, and the temperature is stabilized at room temperature after the condensation is dried. It is proposed in the implementation guide that the initial impact temperature can be changed, and the test is started from a low temperature, so that the test result is at a high temperature to prevent condensation of the product from the thermal shock test chamber. The two test methods subject the test sample to six extreme temperatures (three high temperature, three low temperature) and five temperature shock processes, but the number of different impact directions is different. The test results that the two tests may achieve are Basically the same, but the latter test method does not require drying time, shortening the thermal shock test time.