Running pure water equipment is not like ordinary equipment, which only requires opening the switch. Instead, it requires constantly monitoring the pressure and conductivity of the equipment, which are important influencing factors. What are the normal values? Below, Jiajie will provide a detailed analysis for everyone.

The quality standard for pure water system products in the 2010 edition of the Chinese Pharmacopoeia requires the following conductivity: 10 ℃ 3.6 μ Bais/cm, 20 ℃ 4.3 μ S/cm, 25 ℃ 5.1 μ S/cm; The pure water system of pharmaceutical factories is generally between 0.8-1.4, and it is very easy to obtain data information below 1 at low temperatures. In high temperatures, it is generally around 1.2. In matter, the product of this quantity and the field strength E is equal to the relative density J of the conduction current. For anisotropic materials, conductivity is a scalar; For various substances, conductivity is a partial differential. In biology, conductivity is the ability of an aqueous solution to conduct electrical currents, expressed in numerical terms. The enterprise is indicated by Siemens PLC per meter (S/m).

In theory, there are only two types of positive ions in pure water, which are H+and OH - caused by water dissolution. The conductivity is 0.055 μ The conductivity of water samples with S/cm matching and no residue at 25 ℃. The conductivity of ultrapure water systems is relatively low, so it is difficult to indicate. The conductivity of water is related to the size of its resistance value. If the resistance value is large, the conductivity will be poor, while if the resistance value is small, the conductivity will be excellent. Therefore, a resistance (M Ω. cm) is commonly used to indicate its purity. The resistance is the number of the conductivity, so the conductivity of pure water can be obtained.

The water production rate of most pure water equipment is considered based on the specifications of RO reverse osmosis membranes at a water infiltration temperature of 25 ℃. Therefore, when selecting a water purifier or RO reverse osmosis pure water equipment, customers should fully consider the lower winter temperature and the gradual decrease in filtered water flow after the RO reverse osmosis membrane is delivered for use. Therefore, when purchasing, it is necessary to increase the required water production rate to 1.5-2 times the allowable water production rate of the machine equipment. As the temperature decreases, the proportion of water increases, the diffusion of water weakens, and the water production rate also decreases with the decrease in temperature. Under the same pressure, if the temperature decreases by one ℃, the water production rate can be reduced by 3-4%. Therefore, the actual operating pressure of RO reverse osmosis in winter is generally high, and the water production rate is lower than usual. It will be better in summer. In the design process of RO reverse osmosis, the head of the high-pressure water pump should fully consider the temperature difference and the change in water production rate after three to five years.

The quality standard for domestic water is a legal requirement for the various elements (physics, organic chemistry, and microbiology) of domestic water and the physical and mental health of the population, taking into account the maintenance of their physical and mental health and the assurance of their quality of life. It is a set of legal quality standards that are published in a certain way with the permission of relevant legal and regulatory units, as well as the requirements for relevant behavioral norms to complete the values. The accurate measurement of conductivity requires two levels of information content. One is the redox potential G of the aqueous solution, and the other is the redox potential pool parameter Q of the aqueous solution. The redox potential can be accurately measured based on the amount of current and operating voltage. According to the expression K=QG, the standard value of conductivity can be obtained. This basic principle of precise measurement is widely used in immediate indication detection instruments.

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