A newcomer is asking about the current usage of differential pressure flowmeters; it seems that electromagnetic, vortex street, and mass flowmeters are the ones commonly used in the market.
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I am a purchasing assistant, and I’m wondering whether differential pressure flow meters are gradually losing their relevance these days I asked several manufacturers, and all of them mentioned electromagnetic and vortex flowmeters
There are quite a few types of differential pressure flow meters, but electromagnetic and vortex flow meters are the most common and are used the most frequently. For orifice plates and throttle elements, it’s important to choose a good manufacturer as well as a high-quality transmitter; selecting the right model ensures good performance. They are also relatively more economical compared to vortex flow meters
Orifice plates require micro-pressure transmitters. Standard orifice plates can generally be manufactured by most companies, but custom-made orifice plates of non-standard types are not something that every company can produce well. Anyway, for differential pressure flowmeters, I only trust Yokogawa.
Pressure differential installation and control are both rather complicated, and the price remains high even for larger pipe diameters
Differential pressure is still widely used, but it has a relatively high entry barrier; choosing the location for pressure measurement and arranging the pressure conduits requires considerable experience, and selecting substances such as isolation fluids is even more difficult. Relatively speaking, things like electromagnetic vortex flow meters are much simpler to install and put into use on-site.
Thank you all for your answers. Regarding the market at present, is the differential pressure measurement now more reliant on vortex flow meters rather than electromagnetic ones?
These days, for differential pressure flowmeters, one usually buys the orifice plate and throttling device separately, rather than getting a complete set? Should I still buy one to assemble myself?
It depends on what is being measured; for measuring water, no one uses differential pressure – everyone uses electromagnetic methods.