Mechanical current meter used in oceanography to maasure flow
Rotor current meter RCM 8 with red vane and Savonius-rotor.
A rotor current meter (RCM) is a mechanical current meter, an oceanographic device deployed within an oceanographic mooring measuring the flow within the world oceans to learn more about ocean currents. Many RCMs have been replaced by instruments measuring the flow by hydroacoustics, the so-called Acoustic Doppler Current Profilers. However, for instance in Fram Strait, the Alfred Wegener Institute still uses RCMs for long-term monitoring the inflow into the Arctic Ocean.[1]
^Beszczynska-Möller, Agnieszka; Woodgate, Rebecca; Lee, Craig; Melling, Humfrey; Karcher, Michael (1 September 2011). "A Synthesis of Exchanges Through the Main Oceanic Gateways to the Arctic Ocean". Oceanography. 24 (3): 82–99. doi:10.5670/oceanog.2011.59.
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current to the rotor. The windings on the rotor are connected to the commutator segments. The commutator reverses the current direction in the rotor windings...
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computing control algorithms to tailor drive waveforms according to rotor position and current/voltage feedback. Before the development of large-scale integrated...
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zero to about 600 volts. A small permanent magnet rotor is usually mounted at the top of the meter. For DC, this magnet flips one way or the other, indicating...
higher volumes and pressures than diaphragm meters. Within the meter, two figure "8" shaped lobes, the rotors (also known as impellers or pistons), spin...
of 2015 the rotor diameters of onshore wind turbine blades reached 130 meters, while the diameter of offshore turbines reached 170 meters. In 2001, an...
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that collects meteorological and oceanographic data Rotorcurrentmeter – A mechanical currentmeter used in oceanography to measure flow Science On a Sphere...
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is equivalent to a rotary vane pump with a heavy rotor placed in the current. The mass of the rotor and the surface area of the vanes restricts the water's...
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