Endress+Hauser Proline Promag 53H - Function and system design; Measuring principle; Measuring system

Proline Promag 50H, 53H
Endress+Hauser 3
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 by means of the pipe cross-sectional area. The
DC magnetic field is created through a switched direct current of alternating polarity.
A0003191
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 Pipe cross-section
I Current strength
Measuring system The measuring system consists of a transmitter and a sensor.
Two versions are available:
• Compact version: Transmitter and sensor form a mechanical unit.
• Remote version: Sensor is mounted separate from the transmitter.
Transmitter:
• Promag 50 (user interface with push buttons for operation, two-line display, illuminated)
• Promag 53 ("Touch Control" without opening the housing, four-line display, unilluminated)
Sensor:
• Promag H (DN 2 to 150 / ¹⁄ to 6")
Ue
I
I
B
L
V