I would like to ask everyone: what are the differences between insert-type vortex flowmeters and electromagnetic flowmeters compared to ordinary ones?
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This post was last edited by Chen Guanxi on 2009-9-17 at 11:16. Is it just a question of whether the flow is interrupted or not during maintenance and disassembly? I find it a bit strange; after all, the principle behind them shouldn’t be any different, right? But then why is there such a thing as an insert-type model? Also, if the flow isn’t interrupted, how can it be disassembled? I don’t quite understand... It seems there are pipeline-type electromagnetic flowmeters, insert-type electromagnetic flowmeters, pipeline-type vortex flowmeters, and insert-type vortex flowmeters – there must be some differences between them... Does anyone know the fundamental differences in principle and structure between insert-type and pipeline-type models? It’s not necessary to go into too much detail; that’s not the way to approach learning!
The insert type is mainly used for large-diameter pipelines, due to cost considerations; however, its precision is not as high as that of the pipe-type.
The precision isn’t very high. It’s also reasonable to consider the cost aspect: if the pipe diameter is large and it includes pipe sections and flanges, then even if it’s sold as scrap metal, the weight would still be considerable… Thanks!
Insert-type types are mainly used for large pipe diameters. As for whether flow will be interrupted during disassembly, there is no need to worry about it. Even if you choose a pipe-type instead of an insert-type, how can you arrange a bypass for large pipe diameters?~~~~
The measurement principles of the two are different. The former can measure dirty media, while the latter is for clean media ；
There isn’t much difference; the plug-in type is mainly used for large-diameter pipelines, as this helps reduce investment costs in instruments, whereas flange-type connections are expensive for large diameters.
An electromagnetic flowmeter measures the electromotive force, thereby determining the flow rate； Vortex street flow meter measures flow velocity because, under certain conditions (with the Reynolds number within a specific range), there is a linear relationship between the frequency at which vortices are generated by the vortex generator and the flow velocity ； Principle of vortex flow meter: http://bbs.hcbbs.com/viewthread.php?tid=376791 Principle of electromagnetic flow meter: http://bbs.hcbbs.com/viewthread.php?tid=127065
The friend on the 2nd floor is right. A month ago, when I was in communication with a manufacturer, he told me the same thing
The insert-type electromagnetic flowmeter is a new type of fluid flow meter that has been developed on the basis of the pipe-type electromagnetic flowmeter. While retaining the advantages of tubular electromagnetic flowmeters, it addresses the shortcomings of these meters such as difficulty in installation on large pipes and high costs. Based on the NIKURADS principle, it uses electromagnetic methods to measure the average flow velocity of the fluid, thereby determining its volumetric flow rate. In particular, thanks to the use of pressure-opening and pressure-installation techniques, insert-type electromagnetic flowmeters can be installed without shutting down the water supply, and they can also be installed on cast iron pipes, cement pipes, and PE pipes.
Piped ones go without saying, right? Law of electromagnetic induction!