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This post was last edited by cfllyb on 2017-6-15 at 14:07. Vortex flow meters are widely used in modern industrial production; the following provides a detailed guide on how to select a suitable one. 1. Under normal circumstances, flange-mounted flowmeters are recommended. It has a more compact structure than flange-connected flowmeters, and its price is also lower. 2. The standard material 1Cr18Ni9Ti can be used in the vast majority of conventional media, including some corrosive media as well as saturated steam and superheated steam. Special materials are not necessary for non-special highly corrosive media, as the latter are expensive and require a long processing time. 3. In areas with explosion hazards, explosion-proof flowmeters should be used. Since intrinsically safe instruments cannot be used in Class 0 hazardous areas, and it is not allowed to open the enclosure of intrinsically safe instruments while the device is still powered on in order to make circuit adjustments, it is highly recommended that users use intrinsically safe explosion-proof vortex flowmeters whenever possible. Explosion-proof flowmeters should only be considered in special cases. 4. Choose flow meters that meet DIN/ANSI standards carefully. The actual diameter of DIN/ANSI instruments does not match that of GB international pipes. When the pipe under measurement is a GB international pipe, using flow meters manufactured according to DIN/ANSI standards can lead to problems with installation and operation. Flow meters according to the DIN/ANSI standard are used only when the pipes are DIN/ANSI pipes. The pulse signal output by the flow sensor corresponds directly to the vortex separation frequency, offering the highest cumulative accuracy. Pulse signal transmission performs well, and it is also cheaper than flow transmitters. Flow transmitters provide analog signal output; they have accuracy at full scale but poor cumulative accuracy, making them unsuitable for total volume measurement.