Promag CON-485 Series Technical Information PDF herunterladen (Seite 2)

Proline Promag 50W, 53W

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Function and system design

Measuring principle Faraday’s law of induction states that a voltage is induced in a conductor moving in a magnetic field.

In electromagnetic measuring, the flowing medium corresponds to the moving conductor. The induced voltage

is proportional to the flow velocity and is detected by two measuring electrodes and transmitted to the ampli-

fier. Flow volume is computed on the basis of the pipe's diameter. The constant magnetic field is generated by

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 gap

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 single mechanical unit.

• Remote version: transmitter and sensor are installed separately.

Transmitter:

• Promag 50 (user interface with push buttons for operation, two-line display)

• Promag 53 (“Touch Control” without opening the housing, four-line display)

Sensor:

• DN 25...2000

1 2 3 4 5 6 7 ... 39 40

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Promag CON-485 Series Technical Information Seite 2