Noise is a sound that should not be present in a certain environment. After using it for a long time in the constant temperature and humidity test chamber, there may be noise in the test box. When noise occurs, you must first learn to determine what causes it, and then reduce the noise according to the specific situation.
When the compressor of the constant temperature and humidity test chamber is noisy, it is necessary to check three places: first, see if the shock absorbing spring is deformed, if the deformation will affect the stability of the pressure regulating function, and thus emit noise; second, look The degree of wear of the needle valve, whether the cone surface and the valve seat can be close together, if not, the pilot flow rate is unstable, so that the pressure fluctuation generates noise; thirdly, it is checked whether air is mixed in the oil to form a cavitation phenomenon and generate noise. . If the part is deformed and worn, just replace it, the air is mixed with air, and the noise is removed by promptly removing the seal and preventing the air from re-entering.
The constant temperature and humidity test chamber generates noise, and may also be caused by the sheet metal process. If the sheet metal design is unreasonable, and the test box is made of poor materials and the overall process is not good, it will be particularly prone to vibration, which will cause noise, and the longer the noise, the greater the noise will be. Therefore, when purchasing the test box, pay attention to the materials and processing techniques used by the manufacturer.
Inferior electronic components are more prone to aging and deformation than good accessories, and factors such as loosening of accessories may cause noise in the constant temperature and humidity test chamber. Xiaobian recommends that the majority of users go to the regular manufacturers to buy, that is, to ensure that the quality can also be assured of after-sales. In addition, during the test box production and debugging process, the technical level of the commissioning personnel may also cause noise. If the above factors are excluded, it is necessary to ask the senior technicians to carry out comprehensive professional inspection and debugging to reduce the noise.
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