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2. Ultrasonic flow meter - Wikipedia

   en.wikipedia.org/wiki/Ultrasonic_flow_meter

   Schematic view of a flow sensor. An ultrasonic flow meter is a type of flow meter that measures the velocity of a fluid with ultrasound to calculate volume flow. Using ultrasonic transducers, the flow meter can measure the average velocity along the path of an emitted beam of ultrasound, by averaging the difference in measured transit time between the pulses of ultrasound propagating into and ...

3. Flow conditioning - Wikipedia

   en.wikipedia.org/wiki/Flow_conditioning

   In case of a perfect fully developed real velocity profile of Ultrasonic meter which is shown in Fig.(7) indicating a possible sound path as a result of an installation in a real flow. Figure (7) showing Ultrasonic meter sound path - fully developed flow. Here a mathematical derivation for this Ultrasonic meter is also becomes very complicated.

4. Category:Flow meters - Wikipedia

   en.wikipedia.org/wiki/Category:Flow_meters

   Ultrasonic flow meter; Utility submeter; V. Vortex flowmeter; W. Water metering This page was last edited on 7 January 2018, at 21:41 (UTC). Text is available under ...

5. Flow measurement - Wikipedia

   en.wikipedia.org/wiki/Flow_measurement

   The flow direction is generally straight through the meter, allowing for higher flow rates and less pressure loss than displacement-type meters. They are the meter of choice for large commercial users, fire protection, and as master meters for the water distribution system .

6. Parshall flume - Wikipedia

   en.wikipedia.org/wiki/Parshall_flume

   For submerged flow, a secondary head measurement (Hb) is required to determine the flume is submerged and the degree of submergence. The primary point of measurement (Ha) is located in the inlet of the flume, two-thirds of the length of the converging section from the flume crest.

7. Turndown ratio - Wikipedia

   en.wikipedia.org/wiki/Turndown_ratio

   The examples are here for gas flow, but the same meter types can be used on liquids as well, with similar turndown ratios. Note that meter manufacturers state their products' turndown ratios—a specific product may have a turndown ratio that varies from the list below. [citation needed] A thermal mass flow meter has a turndown ratio of 1000:1.