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Why Can't The High Low Temperature Test Chamber Be Fully Loaded For Testing? 2

May. 10, 2019

As a Salt Fog Testing Machine Factory, we continue to talk to you about why high and low temperature test chambers are not fully loaded for testing.

Second, the accuracy index of the environmental parameters in the working chamber are the results of the detection under the no-load condition. Once the product to be tested is placed, the uniformity of the environmental parameters in the working chamber of the high and low temperature test chamber will be affected, and the space occupied by the tested product will be occupied. The bigger the difference, the more serious this effect will be. The measured test data shows that the temperature difference between the windward and leeward sides in the flow field can reach 3-8 °C, and in severe cases it can be as large as 10 °C. Therefore, the requirements specified in the standard must be met as much as possible to ensure the uniformity of the environmental parameters around the product being tested.

High Low Temperature Test Chamber

Third, according to the principle of heat conduction, the temperature of the airflow near the wall of the High Low Temperature Test Chamber is usually 2 to 3 °C from the center temperature of the flow field, and may reach 5 °C at the upper and lower limits of the high and low temperature. The temperature of the chamber wall of the High Low Temperature Test Chamber differs from the temperature of the flow field near the tank wall by 2 to 3 ° C (depending on the structure and material of the tank wall). The greater the difference between the test temperature and the external atmospheric environment, the greater the temperature difference. Therefore, the space within the distance from the tank wall (100 to 150 mm) is an unusable space.


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