High and low temperature alternating heat and humidity test box operation point of view: details about the placement of the test product
When we test the product, some details are not negligible. Seriously, it can directly lead to inaccurate test results. For example: the high and low temperature alternating heat and humidity test chamber is closed during normal operation. We cannot see any movements in the chamber, and we cannot control the changes in the position, shape, and nature of the product to be tested. . This requires us to strictly control the placement requirements of the products to be tested. If you do not understand, please see the details of the placement of the products to be tested introduced by Shanghai Jianhu Instrument Equipment Co., Ltd. below.
First of all, the product to be tested should be placed in the middle of the test box. It cannot be placed directly on the surface of the box. The distance of the sample holder needs to be adjusted according to the size, shape, quality, and quantity of the test product. The product under test also needs to be at least 5 mm away from the left and right sides of the cabinet. In addition, if an external power supply is required, the wires should be connected to the test hole uniformly, and the wires should not be entangled to avoid damage or other dangers.
According to the standard box volume is greater than or equal to 3 times the volume of the product to be tested, but in the actual knowledge, the following conclusions are drawn according to the actual application: the upper 100MM, the lower 100MM, the left and right 5MM in the box are not suitable for placing the product, and, wait The test product should not be too dense. If the product to be tested is a liquid, it must be filled in a container before being placed in the constant temperature and humidity testing machine. For volatile, explosive and flammable liquids to be tested, the temperature must not be set too high. The products to be tested often also include various small parts such as automotive electronics, and the sample racks provided by the manufacturers are mostly perforated with different hole sizes. For smaller parts manufacturers, trays must be used.
Example: High and low temperature detection of circuit boards in the electronics industry, you can set the temperature in the constant temperature and humidity test box to 150 degrees high temperature baking test, you can also put it at 0 degrees to do low temperature detection experiments, and you can set the corresponding temperature and humidity And humidity point, simulate an environment with high humidity outside, see how various natural environments will affect the circuit board, whether it will be damaged, from whether the circuit board is qualified, whether it can be used in life and work.
The details of the placement of the test items in the high and low temperature alternating heat and humidity test chamber can be specific to different items, and the precautions for different items are also different. problem.
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