The humidity in the constant temperature and humidity test chamber is generated by heating water to generate steam. Therefore, during the operation, impurities in the water will cause harm to the constant temperature and humidity test chamber. This article mainly introduces several major hazards. Impairment of impurities dissolved in water in ionic or molecular state 1. The main components of calcium salts in water are Ca (HCO3) 2, CaCl2, CaSO4, CaSiO3, etc. Calcium salt is the main component that causes scaling in the constant temperature and humidity chamber. Among them, CaSO4 is a hard, finely crystalline scale with loose structure and low adhesion. It is a relatively soft sludge. It is fluid from the water and can be easily removed even if it is attached to the heated surface. 2. The main components of magnesium salts in water are Mg (HCO3), MgCl2, MgSO4, etc. After magnesium is dissolved in water, Mg (OH) 2 precipitates after thermal decomposition, and Mg (OH) 2 is also sludge type scale. MgCl2 and MgSO4 dissolved in water will cause acid corrosion of the metal wall due to hydrolysis when the water pH is less than 7. 3. Sodium salt mainly consists of NaCl, Na2SO4, NaHCO3 and so on. NaCl does not produce scale, but there is free oxygen in the water, which will accelerate the corrosion of the metal wall; the content of Na2SO4 is too high, it will form salts on the accessories behind the evaporator, affecting safe operation; It will decompose NaCO3, NaOH, CO2 and damage the metal grains. It can be seen that the requirements for water quality in the constant temperature and humidity test chamber are extremely high. In daily operation, attention should be paid to it. The Yashilin test chamber stipulates that the humidification water must use deionized or distilled water to extend its service life. Female sunglasses, according to the women's fashion collocation, highlight the indispensable ornaments, this kind of sunglasses have a variety of materials, the most commonly used in three kinds of metal, acetate, plastic. Each type of material is different and the style is different. It is also a kind of glasses that can block the sun's light in the strong light protection of the eyes of the products can block ultraviolet and infrared, while the color of the external environment does not change, only light intensity changes, play the protection of the eye. Sunglasses For Women,Custom Sun Glasses,Lady With Sunglasses,Sunglasses For Female China Guangdong Shenzhen city Omelle glasses Co., Ltd. , https://www.omelleoptical.com
December 12, 2020