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How to Select a Proper Flowmeter

Jun 21, 2008
The flowmeter is nothing but an instrument that is able to measure linear as well as non-linear and mass flow rate of gases or liquids. From the very start you need to understand the type of application that it is being used for when it comes to selecting the right flowmeter. So it pays to invest your time and make a concerted effort in making a complete evaluation of the processed fluid's nature and how the meter is to be installed

To be sure, before selecting your flowmeter you need to answers questions such as the nature of fluid that is to be measured by the flowmeter and so you need to be sure whether you are going to measure air or water or some other medium. When using the flowmeter you need to determine whether there is need for rate measurement or totalization? Is the fluid being measured clean or not, also has to be determined?

Electronic Signals or Local Display

Other questions that need to be answered with regard to selecting a flowmeter are determining whether a local display is required on the instrument or are electronic signals enough. Establishing the minimum and maximum rate of flow, minimum and maximum process pressure as well as minimum and maximum temperature of the process all need to be determined as well.

Finally, you have to also determine whether the fluid is chemically compatible with wetted parts of the flowmeter, and in case the application is process oriented, what size of pipe should be used. In addition, you will also need to be concerned with the piping as well as area where the flowmeter can best be located.

Another aspect to deciding on using a flowmeter is comparing it in terms of performance with a point sensor that too can provide similar performance. As a rule of thumb, given that you need to choose between point sensors and flowmeters, the latter is the better option because the former cannot look to the complete flow and it is also only effective when inserted to a certain depth where flow velocity is neither too high nor too low.

So, before you specify your flow meter, it is recommended to check whether to use mass units or volumetric units to obtain the most useful flow information. In the case of compressible materials that do not have constant density, volumetric flow is not very useful. In such cases, it may be better to use mass flow meters that are insensitive to density and pressure as well as variations in viscosity
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Need Help In Selecting A Flow Meter? Read This Educational Piece Of Writing, How to Select a Proper Flowmeter. This Is A Excellent Starting Point For Your Research.
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