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Flow Meter Types |
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MAGMETERS - Electromagnetic |
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. |
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| Featured
Electromagnetic
Flowmeter Suppliers |
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SURE FLOW PRODUCTS provides Industries and related O.E.M.’s with high quality, cost effective flow products and sure flow solutions for virtually all applications. SURE FLOW PRODUCTS offers a wide range of sensing technologies for flow, temperature, pressure, and a variety of options to ensure that the right product is provided at the right price. We also specialize in liquid filtration equipment that includes housings, bags, cartridges, and strainers. For immediate assistance or additional information please do not hesitate to contact us.
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Featured Electromagnetic
Flowmeter suppliers |
| Magmeter |
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SERIES MG* : High Capacity Magnetic Flow Meter
- Full scale flow ranges from 18 to 116,000 GPM
- Connection sizes from 1/2-inch to 20-inch wafer, sanitary, or flange
- Construction materials: 304 Stainless Steel with Teflon or Rubber Lined
- Electrode materials: 316L, Hastelloy C, Monel, Titanium, or Tantalum
- No moving parts or flow obstructions
- Programmable response time from 0.1 seconds to 100 seconds
- Accuracy is 0.5% of rate
- Nema 4x display enclosure
- Pressure ratings to 600 PSIG
- Optional integral or remote micro-processor based LCD that displays rate, total, contacts, and retransmission signals
* FACTORY PRE-CALIBRATED TO CUSTOMERS SPECIFICATION
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about Electromagnetic Flowmeters |
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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
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High percentage of solids
Sludges, slurries, minerals, paper, sewage -
flows with high levels of solids which cannot
be measured other types of meters.
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Obstructionless measurement
Nothing projects into the flow stream, no head
loss, no parts to maintain.
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Very corrosive liquids
Acids, caustics and corrosive chemical additives
are isolated from the meter by inert linings
and electrodes.
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Conductive Liquids
Liquids where conductivity is at sufficient
levels to induce measurable voltage
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Flow Indication & Control |
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