Med-Hycos - the Data
ELECTROMAGNETIC DISCHARGE MEASUREMENT
This current meter is designed for discharge measurement in shallow water, minimum velocities.
As there is not moving piece e.g.
a propeller, this device is very accurate in hard measurement conditions
as plant-loaded water, polluted water etc.
The magnetic induction principle according to Faraday offers the possibility to measure lowest velocities without any mechanically moved parts : if an electro-conductive medium moves in a magnetic field, then a voltage is induced in this conductor :
U = B . L . V
U : measuring voltage ; B : magnetic field ; L : length of the conductor ; V : velocity
Thus the output voltage is
linearly proportional to the velocity of the electric conductor. Depending
on the principle, the measurement in each case should only covers the axial
component of the flow velocity, that means by this a 100% component effect
CONDITIONS OF USE
The electro-magnetic current meter
can be used with a rod (generally 20 mm diameter), using sometimes a relocating
device for an easy use in rivers.
Operating temperature : - 5°C