The three-zone type thermal shock test chamber. Sample is placed in the test chamber, more extreme temperature than test temperature can be set in high-temperature chamber and low-temperature chamber.
During low temperature test, cold chamber door open, and low-temperature chamber working together with test chamber. When converted into high-temperature test, cold chamber door closed, hot chamber door is opened, and test chamber working together with high-temperature chamber.
Conversion of mechanical action (transferring from high temperature to low temperature or low temperature to high temperature) can be completed in less than 1 second, and the temperature can be quickly stabilized. During the whole test, test sample is no need to be moved, and without any human intervention.
Sample is placed in the test chamber at higher temperature than test temperature, in high-temperature chamber and low-temperature chamber. Rather than only hot and cold temperature the specimen flows between hot, ambient, and cold zones. When converted into high-temperature test, cold chamber and ambient chamber door is closed, hot chamber doors are opened, and test chamber works. When it comes to low temperature test, cold chamber door open, and low-temperature chamber works.
When it comes to ambient chamber temperature test, ambient chamber door open, and ambient-temperature chamber works.
Difference Between 3 Zone and 2 Zone Thermal Shock Chamber
3-zone: three chambers in total: test space, high temp. chamber and low temp. chamber;
Advantage: slight limitation for test sample’s weight, the test sample keep still, this can reduce the impact to samples by moving it, can be used for on-load testing. Compared with the 2-zone type, relatively low failure rate, low cost.
2-zone: only two chambers: high temp. Chamber and low temp. chamber
Advantage: short conversion time, smaller space needed,
Disadvantage: test sample moving; test samples’ size is limited by the basket size