Which manufacturer of electromagnetic flowmeter is good

When many friends buy some electromagnetic flowmeters or consult some related questions about electromagnetic flowmeters, they will think: Which manufacturer of electromagnetic flowmeter is good? In fact, the question of which manufacturer is good for electromagnetic flowmeter is really very difficult to answer. Although there is no difference in principle between electromagnetic flowmeters produced by different manufacturers, in the configuration of the internal components of the materials, the electromagnetic flowmeters produced by different manufacturers have different service life and stability under different measurement conditions. The same? So there is no way to talk about which manufacturer of electromagnetic flowmeter is good. In fact, electromagnetic flowmeters have their own application scenarios in many industries, but the big guys must be aware of the points that need to be paid attention to in the selection process of electromagnetic flowmeters: 　　 1. Understand the process parameters (1) Understand the name of the measured liquid (by Provided by the user) 　　 (2) Understand the maximum flow rate, common flow rate, and minimum flow rate of the liquid to be measured (provided by the user) 　　 (3) Understand the process pipe diameter (provided by the user) 　　 (4) Understand the medium temperature (provided by the user) 　　 (5) Understand the pressure of the medium (provided by the user) 　　 (6) Understand the conductivity of the fluid to be measured (provided by the user) 　　 (7) Understand whether there is negative pressure (provided by the user) 　　 2. Preliminary selection (1) According to what is learned The name and nature of the measured medium, determine whether to use an electromagnetic flowmeter (determined by the salesperson) 　　 Note: Electromagnetic flowmeter can only measure the flow of conductive liquids, and gas, oil and most organic liquids are not examples of general conductive liquids ( 2) Determine the electrode material according to the learned properties of the medium. Pay attention; the company generally provides four types of electrodes, such as stainless steel, Hastelloy, titanium and tantalum. Which electrode should be selected according to the properties of the medium. The temperature of the medium is determined to use rubber or PTFE lining (determined by the salesperson) 　　 Note: The temperature resistance of rubber shall not exceed 80C; 　　 PTFE temperature resistance is 150C, and can withstand 180C instantly; 　　Urban sewage generally can use rubber lining and stainless steel electrodes (3) According to the learned medium pressure, choose the flange specification of the meter body (determined by the salesperson). Note: The electromagnetic flange specification is usually when the diameter is DN10-250, and the rated pressure of the flange is ≤1.6Mpa; 　　when the diameter is DN250-1000 , Flange rated pressure ≤ 1.0Mpa; 　　 when the actual pressure of the medium is higher than the corresponding range of pipe diameter-pressure, it is a special order, but the maximum pressure shall not exceed 6.4Mpa　　 (4) Determine the conductivity of the medium. Note: (1) Electromagnetic flow The conductivity of the meter shall not be lower than 5uS/cm　　 (2) The conductivity of tap water is about tens to hundreds of uS/cm, general boiler soft water (deionized water) is conductive, pure water (highly distilled water) is not conductive (3) The conductivity of gas, oil and most organic liquids is much lower than 5uS/cm, so they are not conductive. 3. Understand user requirements (1) Understand whether it is a combined local display or a split remote display (provided by the user) 　　 Note: Please understand the maximum distance when it is a split remote display, and the maximum separation distance is 100 meters (2) Understand whether other additional functions are needed (provided by the user) 　　 Note: 1. The electromagnetic flowmeter itself has the upper and lower limit flow alarm, frequency and current output functions, no special order is required. 2. The electromagnetic flowmeter housing sealing protection level is IP65 and IP68. This is a special order when the submersible IP68 is selected. 3. When the electromagnetic flowmeter needs to be connected to the computer, an RS-485 communication port needs to be added, which is a special order. 4. Type selection: After the above steps, the electromagnetic flowmeter can be finalized Model specifications. Among the many electromagnetic flowmeter manufacturers, there are those who win by price and those who win by service. For example, Hangzhou United Test, which I am familiar with, has established more than 20 technical service centers across the country to provide free technical guidance. I still admire this point, so if someone asks which manufacturer of electromagnetic flowmeter is good, in general, I would recommend the electromagnetic flowmeter from Hangzhou United Test.
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