Share the flowmeter dry goods, and never be afraid of choosing the wrong one after reading

The acceptance of the new calibration device of Kaidi electromagnetic flowmeter is imminent. I take advantage of this time to share with you the knowledge of electromagnetic flowmeter selection at the request of new and old friends. They are all practical and dry goods. It is recommended to collect them.　　 Before talking about the selection, we need to understand the simple structure of the electromagnetic flowmeter. The entire flowmeter generally has: 　　①Coil: It is the magnetic field generator of the flowmeter, mainly used to generate the excitation magnetic field. ②Lining: It is the part of the flowmeter that contacts the medium, and mainly plays the role of insulation and anti-corrosion of the electrode. ③Electrode: it is the flowmeter. Sensitive elements are mainly used to sense the electromotive force of the fluid cutting magnetic line of induction, as well as the body's carbon steel structure (also made of stainless steel and other materials) and the meter head.　　 Therefore, in the selection process of the electromagnetic flowmeter, the concentrated problem is to choose the proper diameter, electrode and lining according to the corrosiveness, temperature, and some special properties of the medium. The following figure is a reference for the selection of several typical electromagnetic flowmeter application scenarios in various industries. You can refer to it and save it: 　　 I will give you the key points. The general electromagnetic flowmeter selection is mainly the following aspects: caliber, installation method, electrode, Lining, power supply, flow range.　　 Attach a selection chart of ours for your reference!　　Installation Specifications　　After selecting the flowmeter, there is actually the most important step, and that is installation.　　 As the saying goes: the installation is not standardized, the technology is two lines of tears!　　 Let’s take a look at a few typical cases: 　　①The old head directly installed at the water outlet 　　②The old head of the previous model can’t escape the same fate 　　③The split type is still not immune to 　　④The straight pipe section has been left too few 　　 These installation methods basically have only one result: measurement! No! allow! ! !　　 To sum up, it is also the crystallization of the wisdom of the working people: 　　 Before the valve, after the pump, the first ten and the last five! (Electromagnetic flowmeter needs to be installed in front of the valve, behind the pump, to ensure that the first 10 times, the last 5 times the diameter of the straight pipe section!)
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