Electromagnetic
Magnetic Flowmeter - A conductive process
fluid is run through a magnetic field. As it creates
an electric charge through its interaction with
the field, the charge is measured to find the
speed of the flow.
Featured
Electromagnetic
FlowmeterSuppliers
Instrumart is a leading supplier of industrial instruments located just outside Burlington, Vermont. Instrumart is the operating name for Total Temperature Instrumentation, Inc. ("TTI"). Instrumart is a global company with local roots. We are a member of the Lake Champlain Regional Chamber of Commerce and Vermont Businesses for Social Responsibility. We were recently named to Inc. Magazine's Inc. 5000 list of the fastest-growing private companies in the United States for the second year in a row. Vermont Business Magazine has named Instrumart one of the Best Places to Work in Vermont and one of Vermont's Top 5 Wholesale Businesses. More
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Featured Electromagnetic
Flowmeter suppliers
Instrumart's Electromagnetic Flowmeter
The Krohne OPTIFLUX 4000 electromagnetic flow sensor / magmeter is the proven choice when selecting a flow meter. This versatile flow meter is suitable for almost all applications in all industries. More Info>>
The Dynasonics MFX MagProbe ™ insertion magnetic flow transmitter is a cost-effective solution for accurate measurement of conductive liquid in closed conduit, pressurized-pipes without process shutdown. More Info>>
The GF Signet 2552 magmeter flow sensor is a heavy duty, high performance electromagnetic flow sensor in an adjustable-insertion configuration. The GF Signet 2552 magmeter can be used with a ball valve for hot-tap installations. More Info>>
The Krohne Enviromag 2000 electromagnetic flow meter is suitable for either clean, homogeneous or dirty, non-homogeneous flow applications. Configurable into a number of system designs, the Krohne Enviromag 2000 electromagnetic flow meter is is designed for use with either the Krohne IFC 010 or Krohne IFC 300 flow converters. More Info>>
More
about Electromagnetic Flowmeters
The operating principle
of magnetic flowmeters is based upon Faraday's Law of
electromagnetic induction, " It states that a
voltage will be induced in a conductor moving through
a magnetic field."
Faraday's Law :
E=kBDV Where
E = Induced Voltage,
B = Strength of the magentic field,
D = Conductor Width,
V = Velocity of the conductor.
The magnitude
of the induced voltage E is directly proportional to
the velocity of the conductor V, conductor width D,
and the strength of the magnetic field B. Magnetic field
coils placed on opposite sides of the pipe generate
a magnetic field. As the conductive process liquid moves
through the field with average velocity V, electrodes
sense the induced voltage. The width of the conductor
is represented by the distance between electrodes. An
insulating liner prevents the signal from shorting to
the pipe wall. The only variable in this application
of Faraday's law is the velocity of the conductive liquid
V because field strength is controlled constant and
electrode spacing is fixed. Therefore, the output voltage
E is directly proportional to liquid velocity, resulting
in the linear output of a magnetic resulting in the
linear output of a magnetic flowmeter
Magnetic Flowmeters
Magnetic flowmeters are based on Faraday's Law
of Magnetic Induction. In a magnetic flowmeter,
the liquid acts as a conductor as it flows through
the pipe. This induces a voltage which is proportional
to the average flow velocity - the faster the
flow rate, the higher the voltage. This voltage
is picked up by sensing electrodes mounted in
the meter tube and sent to the transmitter which
takes the voltage and calculates the flow rate
based on the cross sectional area of the meter
tube.
Where to use
High percentage of solids
Sludges, slurries, minerals, paper, sewage -
flows with high levels of solids which cannot
be measured other types of meters.
Obstructionless measurement
Nothing projects into the flow stream, no head
loss, no parts to maintain.
Very corrosive liquids
Acids, caustics and corrosive chemical additives
are isolated from the meter by inert linings
and electrodes.
Conductive Liquids
Liquids where conductivity is at sufficient
levels to induce measurable voltage
