Maintenance and maintenance instructions for the salt spray corrosion tester:
First, the salt spray test machine use environment requirements 1, the equipment must have more than 600mm space.
2. The temperature around the equipment should be kept between 15 °C and 30 °C.
3. The equipment is not directly exposed to direct sunlight or other heat sources. 4. The equipment does not have a strong airflow. When the surrounding air needs to be forced to flow, the airflow should not be directly blown onto the cabinet.
5. There is no high concentration of dust and corrosive substances around the equipment.
6. The fluctuation of the power supply voltage of the equipment is ≤±10%.
Second, the salt spray test machine use precautions 1, please confirm the power supply connection before the equipment is running.
2. Confirmation of the automatic water supply system.
3. Confirmation of the gas supply system.
4. Confirm the isolation of the sink seal.
5. Exhaust hole inspection.
6. When preparing the salt solution, please use analytical grade NaCl and distilled water or deionized water to prepare and use it immediately.
7. After each test, the power supply, air source and water source should be cut off to avoid the equipment being in the standby state for a long time.
3. Daily maintenance of salt spray test machine 1. At the end of each test, it is recommended to clean the equipment test cabinet (including spray chamber, salt solution chamber, preheating water tank and sealed water tank) with clean water to keep the equipment clean.
2. In each test or at the end of the test, the solution of the standard measuring cup should be poured out and cleaned in time to avoid the accumulation of crystals in the salt solution and affect the calculation of the settlement.
3. When cleaning the cabinet, please note:
(1) Protection of the sheath of the temperature sensor.
(2) Protection of glass filters and glass nozzles (cannot use needles or any hard objects to pass through filters or nozzles).
Vitamins:
Vitamin A: Retinol. Carotene compounds responsible for transmitting light sensation in the retina of the eye. Deficiency leads to night blindness.
Beta carotene: An antioxidant which protects cells against oxidation damage that can lead to cancer. Beta carotene is converted, as needed, to vitamin A. Food sources of beta carotene include vegetables such as carrots, sweet potatoes, spinach and other leafy green vegetables; and fruit such as cantaloupes and apricots. Excessive carotene in the diet can temporarily yellow the skin, a condition called carotenemia, commonly seen in infants fed largely mushed carrots.
Vitamin B1: Thiamin, acts as a coenzyme in body metabolism. Deficiency leads to beriberi, a disease of the heart and nervous system.
Vitamin B2: Riboflavin, essential for the reactions of coenzymes. Deficiency causes inflammation of the lining of the mouth and skin.
Vitamin B3: Niacin, an essential part of coenzymes of body metabolism. Deficiency causes inflammation of the skin, vagina, rectum and mouth, as well as mental slowing.
Vitamin B6: Pyridoxine, a cofactor for enzymes. Deficiency leads to inflammation of the skin and mouth, nausea, vomiting, dizziness , weakness and anemia.
Folate (folic acid): Folic acid is an important factor in nucleic acid synthesis (the genetic material). Folate deficiency leads to megaloblastic anemia.
Vitamin B12: An essential factor in nucleic acid synthesis (the genetic material of all cells). Deficiency leads to megaloblastic anemia, as can be seen in pernicious anemia.
Vitamin C: Ascorbic acid, important in the synthesis of collagen, the framework protein for tissues of the body. Deficiency leads to scurvy, characterized by fragile capillaries, poor wound healing, and bone deformity in children.
Vitamin D: A steroid vitamin which promotes absorption and metabolism of calcium and phosphorus. Under normal conditions of sunlight exposure, no dietary supplementation is necessary because sunlight promotes adequate vitamin D synthesis in the skin. Deficiency can lead to osteomalacia in adults and bone deformity (rickets) in children.
Vitamin E: Deficiency can lead to anemia.
Vitamin K: An essential factor in the formation of blood clotting factors. Deficiency can lead to abnormal bleeding.
Nutritions:
For the treatment of nutritional disease, any of the nutrient-related diseases and conditions that cause illness in humans. They may include deficiencies or excesses in the diet, obesity and eating disorders, and chronic diseases such as cardiovascular disease, hypertension, cancer, and diabetes mellitus. Nutritional diseases also include developmental abnormalities that can be prevented by diet, hereditary metabolic disorders that respond to dietary treatment, the interaction of foods and nutrients with drugs, food allergies and intolerances, and potential hazards in the food supply. All of these categories are described in this article. For a discussion of essential nutrients, dietary recommendations, and human nutritional needs and concerns throughout the life cycle, see nutrition, human.
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