Table of Contents
Advertisement
Measuring principle
4
Symbol
Meaning
Hazardous area
-
Indicates a hazardous area.
A0011187
Safe area (non-hazardous area)
.
Indicates a non-hazardous area.
A0011188
Function and system design
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.
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
Proline Promag P 200
U
e
I
B
I
L
A0017035
Endress+Hauser
Hide quick links:
Advertisement
Table of Contents
Need help?
Do you have a question about the Proline Promag P 200 and is the answer not in the manual?
Questions and answers