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A flow meter (or flowmeter) is an instrument used to measure linear, nonlinear, volumetric or mass flow rate of a liquid or a gas. When choosing flow meters, one should consider such intangible factors as familiarity of plant personnel, their experience with calibration and maintenance, spare parts availability, and mean time between failure history, etc., at the particular plant site. It is also recommended that the cost of the installation be computed only after taking these steps.
One of the most common flow measurement mistakes is the reversal of this sequence: instead of selecting a sensor which will perform properly, an attempt is made to justify the use of a device because it is less expensive. Those “inexpensive” purchases can be the most costly installations. This page will help you better understand flow rate meters, but you can also speak to our application engineers at anytime if you have any special flow measurement challenges.