About Flow Meters
Where to
Use
Clean water flows: Props can measure
liquids with up to 5% suspended solids at temperatures up to
100°F.
Uncertain
or unavailable power: Does not require power to operate.
Wide
size range: Available in sizes up to 72".
Accuracy: Fairly good at ±2%
standard.
How
they Work
Propeller
Meters have a blade which rotates as the flow passes. These
rotations are interpreted as flow by a totalizer usually mounted
on the meter. Propeller meters do not require a power source to
totalize flow. When equipped, the propeller meter can send an
output signal (requiring an external power supply) to a remote
location.The
propeller meter is a low cost, low maintenance meter.
Sparling Propeller Meters
Sparling
Propeller Meters are engineered for a long, trouble-free life.
Many have been in service for 25, 30 even 40 years with only
minor service! Click here to learn more about our newest addition
to the Sparling Propeller
Meter Family!
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me more on Propellers
Magnetic Flowmeters
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.
How
they Work
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.
About Sparling Magmeters
Sludge, slurry, soup or
salsa - there is a Sparling magmeter to fit your application.
Sparling Magmeters come with a two-year warranty and offer a wide
selection of meter sizes, liners and electrode materials to suit
your application. Click here to learn more about Sparling Mags including the
newest
addition to our Magmeter Family.
Show
me more on Magnetic
Meters
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jaldridge@sparlinginstruments.com with questions or comments about this web site.
Copyright © 2009 • Last modified: April 27, 2009