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2. Flow measurement - Wikipedia

   en.wikipedia.org/wiki/Flow_measurement

   Similarly to turbine meters, the paddle wheel meter requires a minimum run of straight pipe before and after the sensor. Flow displays and controllers are used to receive the signal from the paddle wheel meter and convert it into actual flow rate or total flow values.

3. Paddle wheel - Wikipedia

   en.wikipedia.org/wiki/Paddle_wheel

   The paddle wheel is a device for converting between rotary motion of a shaft and linear motion of a fluid. In the linear-to-rotary direction, it is placed in a fluid stream to convert the linear motion of the fluid into rotation of the wheel. Such a rotation can be used as a source of power, or as an indication of the speed of flow.

4. Level sensor - Wikipedia

   en.wikipedia.org/wiki/Level_sensor

   Rotating paddle level sensors are a very old and established technique for bulk solid point level indication. The technique uses a low-speed gear motor that rotates a paddle wheel. When the paddle is stalled by solid materials, the motor is rotated on its shaft by its own torque until a flange mounted on the motor contacts a mechanical switch.

5. Hose reel - Wikipedia

   en.wikipedia.org/wiki/Hose_reel

   A hose reel is a cylindrical spindle made of either metal, fiberglass, or plastic and is used for storing a hose. The most common styles of hose reels are spring driven (which is self retracting), hand crank, or motor driven. Hose reels are categorized by the diameter and length of the hose they hold, the pressure rating and the

6. Dethridge wheel - Wikipedia

   en.wikipedia.org/wiki/Dethridge_wheel

   The Dethridge wheel was experimented with to see how it could be used as a hydroelectric power generator for low head sites in open channel flow. [11] The Dethridge wheel offered the same effect that a Zuppinger Wheel when being tested as a low head power generator, and was considered effective in its implementation when using irrigation to ...

7. Parshall flume - Wikipedia

   en.wikipedia.org/wiki/Parshall_flume

   Only the upstream depth needs to be measured to calculate the flow rate. A free flow also induces a hydraulic jump downstream of the flume. Submerged flow occurs when the water surface downstream of the flume is high enough to restrict flow through a flume, submerged flume conditions exist. A backwater buildup effect occurs in a submerged flume.

8. Rotameter - Wikipedia

   en.wikipedia.org/wiki/Rotameter

   A rotameter is a device that measures the volumetric flow rate of fluid in a closed tube. [ 1 ] It belongs to a class of meters called variable-area flowmeters , which measure flow rate by allowing the cross-sectional area the fluid travels through to vary, causing a measurable effect.

9. Peristaltic pump - Wikipedia

   en.wikipedia.org/wiki/Peristaltic_pump

   The flow rate is an important parameter for a pump. The flow rate in a peristaltic pump is determined by many factors, such as: Tube inner diameter – higher flow rate with larger inner diameter. Pump-head outer diameter – higher flow rate with larger outer diameter. Pump-head rotational speed – higher flow rate with higher speed.