Daily maintenance of constant temperature and humidity test chamber
A good constant temperature and humidity test chamber not only has precise performance and stable parameters, but also maintains and maintains the constant temperature and humidity test chamber during use, which can effectively protect the performance and service life of the equipment. The daily maintenance of the constant temperature and humidity test chamber and the simple test of the main technical indicators can ensure that the work of the constant temperature and humidity test chamber is in the state. The following are some points to note about the maintenance of the constant temperature and humidity test chamber:
The temperature and humidity of the constant temperature and humidity test chamber are important factors affecting the performance of the instrument, which can cause the corrosion of mechanical parts, reduce the smoothness of the metal mirror surface, and cause the error or performance degradation of the mechanical part of the constant temperature and humidity test chamber; The optical components of the test chamber, such as gratings, mirrors, focusing mirrors, etc., are rusted, resulting in insufficient light energy, stray light, noise, etc., and even the instrument stops working, thus affecting the life of the constant temperature and humidity test chamber, and should be regularly maintained during maintenance. Correction.
The dust and corrosive gases in the working environment of the constant temperature and humidity test chamber can also affect the flexibility of the mechanical system, reduce the reliability of various limit switches, buttons and photoelectric couplers, and also cause the corrosion of the aluminum film of the components. One. The constant temperature and humidity test chamber/alternating damp heat test chamber is a simulated natural high and low temperature change environment, which is widely used in the test of the adaptability to the temperature environment during the storage and transportation process of electronic, electrical products and other products. Electrical properties change in mechanical properties. A: Low temperature test method, Test B: High temperature test method" The product is tested at low temperature and high temperature.
The constant temperature and humidity test chamber adopts the temperature control method-balanced temperature adjustment mode, so it can automatically obtain reliable and accurate test temperature from high temperature to low temperature or low temperature to high temperature. Please check if the solid state relay in the humidity part is burnt out: If the heater is not burned, please use the three-meter electric AC voltage file, the voltage gear is opened to 600 volts, and the red and black rods are respectively marked with the line number labeled H. The solid state relay is on both sides of the AC, and the humidity setting value of the humidity part is set to 0%. At this time, the indicator of the solid state relay of the humidity part does not light up. If the measured voltage value does not change, it is maintained at 10V. The following represents a short circuit in the state of solid state relay burnout. Or set the humidity part setting to 0% first, and then see if the water in the humidification tank in the machine room is boiling.
After a certain period of constant temperature and humidity test chamber, a certain amount of dust will accumulate inside. The maintenance engineer or the engineer will periodically open the constant temperature and humidity test chamber cover to carry out the dust removal work inside, and re-tighten the radiator of each heating element. Solid, clean the sealing window of the optical box, calibrate it if necessary, clean the mechanical parts and necessary lubrication, and finally restore the original shape, and then carry out some necessary testing, adjustment and recording.
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