Ten parameters for choosing flowmeters

With the broad selection of mass flowmeters on the market, finding one for an application can seem difficult, but understanding what to look for when comparing meters makes it easier. Primarily, flowmeters differ in the way they measure flow. A meter either measures flow directly or indirectly, and this measurement may or may not depend on fluid properties. For example, one meter calculates mass flow indirectly using a differential pressure measurement and known gas properties, while another meter calculates mass flow directly and independently of gas properties.

There is also considerable variation between the meters when it comes to fluid compatibility, operating range, measurement specifications and price. This article presents the basic operating principles of four common meter technologies and 10 parameters to consider when choosing the optimal flowmeter for an application.

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