Proline Promag P 200
4
Hauser
Symbol
Meaning
-
A0011187
Hazardous area
Indicates a hazardous area.
.
A0011188
Safe area (non-hazardous area)
Indicates a non-hazardous area.
Function and system design
Measuring principle
Following
Faraday's law of magnetic induction
, a voltage is induced in a conductor moving through a magnetic
field.
In the electromagnetic measuring principle, the flowing medium is the moving conductor. The voltage induced
is proportional to the flow velocity and is supplied to the amplifier by means of two measuring electrodes. The
flow volume is calculated via the pipe cross-sectional area. The DC magnetic field is created through a switched
direct current of alternating polarity.
I
L
B
I
U
e
A0017035
å
1
Ue = B · L · v ; Q = A · v
Ue Induced voltage
B
Magnetic induction (magnetic field)
L
Electrode spacing
v
Flow velocity
Q
Volume flow
A
Piping cross-section
I
Current
Содержание Proline Promag P 200
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