KROHNE OPTIFLUX 5000, Руководство пользователя

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TECHNICAL DATA
6
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OPTIFLUX 5000
www.krohne.com 03/2017 - 4000686204 - MA OPTIFLUX 5000 SW R04 en
6.1 Measuring principle
An electrically conductive fluid flows inside an electrically insulated pipe through a magnetic
field. This magnetic field is generated by a current, flowing through a pair of field coils.
Inside of the fluid, a voltage U is generated:
U = v * k * B * D
U = v * k * B * D U = v * k * B * D U = v * k * B * D
in which:
v = mean flow velocity
k = factor correcting for geometry
B = magnetic field strength
D = inner diameter of flowmeter
The signal voltage U is picked off by electrodes and is proportional to the mean flow velocity v
and thus the flow rate Q. A signal converter is used to amplify the signal voltage, filter it and
convert it into signals for totalizing, recording and output processing.
Figure 6-1: Measuring principle
1 Field coils
2 Magnetic field
3 Electrodes
4 Induced voltage (proportional to flow velocity)