As we all know, uniformity is an important technical indicator of the temperature and humidity test chamber. It is an important factor in reference to the performance of a device. The standard specifies that the constant temperature and humidity chamber has a uniformity of ±2 °C under no-load conditions. The deviation of uniformity may increase under load. Then, how to operate in the process of using can ensure the uniformity of the constant temperature and humidity chamber? (1) Before using the constant temperature and humidity chamber, we need to observe the volume and weight of the sample and the position of the working space in the equipment. (2) Improve the control precision of the equipment. Reduce the temperature fluctuation and adjust the median value of the temperature field to reduce the temperature deviation. (3) Increasing the wind speed under the conditions allowed by the test side, enhancing the flow of air in the tank, avoiding the occurrence of dead zones, and making the temperature inside the tank uniform. (4) Decreasing the supply air temperature and increasing the air supply volume: the air supply temperature difference and the air supply amount depend on the magnitude of the cold load or the heat load. In addition, the manufacturer has improved the rationality and perfection of the design of the constant temperature and humidity chamber: the structure is symmetrical, such as two wind turbines, one need to turn left and one right turn to make the air uniform. It is also possible to install a wind deflector at the air outlet to make the temperature uniform.
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