The truth is that there is a vast array of flow technology in the market and selecting the right flow meter for the job can be a hard task and there are many factors that can influence the selection of a flow meter but with the help of some guidelines, the client can select a flow meter that meets their needs. Most people just want to understand the flow rate of liquids or a gas in a pipeline and if that is the case, then the client can choose a simple flow indicator from any flow meter vendor at a small cost. A majority of flow meters are straightforward and easy to use, simple to install, require no external power and they can be used to provide a local indication of flow. The truth is that even if there exists a demand for a flow meter that is more sophisticated by as much as 10% there may still be no need to purchase a flow meter and there are many installations that involve bends or joints that can be put together into a crude flow meter by buying a pressure transmitter and installing sensors to measure the variation in pressure between two or more points and such simplified flow meters can achieve a reading accuracy of about 5%.
The other issue to look into is to choose variable area flow meter not based on just cost alone because the cheapest flow meter may not be the best flow meter though it might offer some savings on money right now in the end, it will prove to be more expensive and may even present other complications in the future. The client needs to be cautious especially if reductions on purchasing price are based on cuts in supplier back-up and expertise and the most cost-effective installation is the one where the supplier can offer good technical back-up on independently traceable test facilities and with other features such as a track record and a reputation for providing highly reliable products that are based on research and development.
The other issue to look into is to know one’s flow because every gas or fluid behaves in a different way when flowing through the pipeline and this is due to viscosity which is the determined by how much of the fluid refuses to flow and this, in turn, affects the speed of flow through the pipeline. By assessing how the fluid or gas flows through the pipeline then it is entirely possible to know how it behaves and from that point the client can narrow down on which electromagnetic flow meter to use that will be able to handle the conditions of the application.