The high-low temperature test box wet ball test method also uses the humidity sensor direct measurement method; the control and display operation interface adopts the method of temperature and humidity separation independent and temperature and humidity combined controller. In addition to correct operation according to the operating procedures, the inspectors should also have an understanding of their structure. The high and low temperature damp heat test chamber is composed of a box body, a wind circulation system, a refrigeration system, a heating system and a humidity control system. The air circulation system generally adopts a structure that can adjust the direction of air supply; the humidification system has two types of boiler humidification and surface evaporation; the cooling and dehumidification system adopts an air conditioning working condition refrigeration structure; the heating system adopts electric heating fin heating and electric furnace direct heating. Two kinds of structures; the temperature and humidity test method adopts the dry high and low temperature test box to consider whether it is a fault in the refrigeration system, so it is necessary to ask the professional of the manufacturer for maintenance. If the low temperature test instrument does not reach the test index, then you should observe the temperature change, the temperature drop is very slow, or the temperature will rise after the temperature reaches a certain value. The former should check it before the low temperature test. Whether to dry the studio, keep the studio dry, and then put the test sample into the work room and then test, whether the test sample in the work room is placed too much, so that the wind in the workroom cannot be fully circulated, after eliminating the above reasons The latter phenomenon is caused by the poor use of the equipment. The ambient temperature at which the equipment is placed and the position where it is placed (the distance between the back of the cabinet and the wall) must meet the requirements (as specified in the operating instructions for the equipment). Scalpel Blades,Surgical Blade,Safety Scalpel,Surgery Blade Surgimed Medical Supplies Co.,Ltd , https://www.surgimedcn.com
The reason for the high-low temperature test chamber or the purity of the water supply will make the gauze hard, so that the gauze can not absorb moisture and dry, just replace or clean the gauze to eliminate the above phenomenon. The latter phenomenon is mainly because the humidification system does not work. Check the water supply system of the humidification system. Is there a certain amount of water in the water supply system? In the damp heat test, the actual humidity will reach 100% or the actual humidity will differ from the target humidity. Very large, the value is much lower, the former phenomenon: may be caused by the drying of the gauze on the wet bulb sensor, then check the water tank of the wet bulb sensor for water shortage, the water level in the water tank is automatically controlled by a water level controller Check whether the water supply system of the water level controller is normal and the water level controller works normally. Another possibility is that the wet ball gauze is used for a long time, and the water level control of the humidifying boiler water level is normal, and the water level in the humidifying boiler is normal. If everything above is normal, then check the electrical control system, which should be repaired by professional maintenance personnel.
High and low temperature test chamber wet ball test method