High and low temperature test chamber is a commonly used laboratory equipment for industrial products, high temperature, low temperature reliability test, is widely used in electrical and electronic, automobile and motorcycle, aerospace and other fields. High and low temperature test chamber in the course of the use of uniformity will not meet the problem, which is what causes it? Here to specifically introduce the high and low temperature chamber uniformity is not the reason.

Thermal radiation: the design of the problem led to the internal structure of the space design is difficult to achieve a uniform symmetrical structure, and asymmetric structure will inevitably lead to internal temperature uniformity deviation, this level is mainly reflected in the sheet metal design and sheet metal processing Aspects, such as: the design of the duct, the location of the heating pipe, the size of the fan power and other reasons.

Sealing: box and the door of the tight lax, such as: non-custom seal seams, door leak, etc., thus affecting the work space temperature uniformity.

The test object selection and placement of the rationality: If the test object is too large, or the test object placed in the high and low temperature test chamber of the location or manner is not appropriate, so that the air convection blocked, but also produce more Large temperature uniformity deviation. Such as placing the test product next to the duct, seriously affecting the circulation of the wind, and of course the temperature uniformity will be greatly affected.

As the inner wall structure is different, it will lead to the internal wall of the temperature will be uneven, and thus affect the thermal convection within the studio caused by internal temperature uniformity deviation.

Thermal load: If the test chamber placed in the high and low temperature test room enough to affect the overall internal thermal convection test samples, will inevitably affect the internal temperature uniformity, for example, placed LED lighting products, the product itself has a fever, become hot Load, then there is a great impact on the temperature uniformity.

Heat transfer: As the wall around the top and bottom of the 6 side of the heat transfer coefficient is different, and some have threading holes, test holes, test holes and other local cooling, heat transfer, so that the box temperature is not uniform, so that the box wall Radiation convection heat is also uneven, affecting the temperature evenly.