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2. Parshall flume - Wikipedia

   en.wikipedia.org/wiki/Parshall_flume

   ASTM D1941 – 91(2013) Standard Test Method for Open Channel Flow Measurement of Water with the Parshall Flume; ISO 9826:1992 Measurement of Liquid Flow in Open Channels – Parshall and SANIIRI Flumes; JIS B7553-1993 Parshall Flume Type Flowmeters; Bos, Marinus (1989). Discharge Measurement Structures. Third edition revised. Publication 20 ...

3. Palmer-Bowlus Flume - Wikipedia

   en.wikipedia.org/wiki/Palmer-Bowlus_Flume

   The general design of the flume detailed in ASTM D5390: Standard Test Method for Open-Channel Flow Measurement of Water with Palmer-Bowlus Flumes. [2] It is important to note that unlike the Parshall flume , the standard for the flume does not set out specific sizes and flow rates, but only general characteristics for the class of flume.

4. Flow measurement - Wikipedia

   en.wikipedia.org/wiki/Flow_measurement

   Open channel flow describes cases where flowing liquid has a top surface open to the air; the cross-section of the flow is only determined by the shape of the channel on the lower side, and is variable depending on the depth of liquid in the channel. Techniques appropriate for a fixed cross-section of flow in a pipe are not useful in open channels.

5. Flume - Wikipedia

   en.wikipedia.org/wiki/Flume

   Some varieties of flumes are used in measuring water flow of a larger channel. When used to measure the flow of water in open channels, a flume is defined as a specially shaped, fixed hydraulic structure that under free-flow conditions forces flow to accelerate in such a manner that the flow rate through the flume can be characterized by a level-to-flow relationship as applied to a single head ...

6. Open-channel flow - Wikipedia

   en.wikipedia.org/wiki/Open-channel_flow

   The discharge of a steady flow is non-uniform along a channel. This happens when water enters and/or leaves the channel along the course of flow. An example of flow entering a channel would be a road side gutter. An example of flow leaving a channel would be an irrigation channel.

7. 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 ...