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The turbine meter is a
volumetric measurement device which operates by sensing the linear
velocity of the fluid passing through it. Using a known
cross-sectional area of the meter housing enables it to determine
the volumetric flow rate. As fluid passes
through the meter, it conveys an angular velocity (RPM) to the
rotor, which is proportional to the linear velocity of the flowing
fluid. Since the linear velocity of the flowing fluid though a given
area is directly proportional to the volumetric flow rate, it
follows that the speed of rotation of the rotor is directly
proportional to the volumetric rate.
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Meinecke
WP/Dynamic Series Cold Water Meter
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Construction/Design
Principles:
The design of liquid turbine meter is relatively simple. It
consists of a cylindrical housing similar to a flanged pipeline
spool piece, a precision balanced free-running rotor and a pick-up
assembly positioned as close to the rotor as practical without
penetrating the housing wall. Fluid passing through the meter
causing the turbine to rotate which in turn, generates pulses in the
pick-up coil. Each pulse represents a defined unit of volume.
Quantifying the total number of pulses in a given time period allows
the meter to accurately interpret / measure the total volume of flow
through the meter.
Applications:
In general, Liquid Turbine Meters are well suited for measurement
of any low viscosity liquid (50 centipoise is the suggested max)
which is chemically compatible with the materials of construction of
the turbine meter. Available materials include 316SS, Brass,
Aluminum, CPVC, PVC, and Epoxy Coated Carbon Steel.
Similar
Technologies:
Propeller Meters:
The propeller style water meter is a variation of the turbine meter.
It operates like a boat's propeller with the water traveling along
the turbine's rotational axis, but with the turbine only supported
by one hanger assembly. A conventional turbine's rotor is
supported by two hanger assemblies.
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| Propeller
Style Meter |
Turbine
Style Meter |
| Sparling
Instruments |
Meinecke
Flanged Turbine Meters
GPI G2 Series Turbine Meters |
Paddlewheel: While
still considered to be part of the turbine family, Paddlewheel
flowmeters use a rotor whose axis of rotation is parallel to the
direction of flow. Most paddlewheel meters have flat-bladed rotors
and are inherently bi-directional.
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- High Accuracy (+/- 1% FS)
- Excellent Low Flow
Measurement
- Wide choice of materials
offers excellent corrosion resistance
- PVC, PVDF, 316SS - Ceramic
Bearings
- Low Pressure Drop
- Bi-Directional
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The
Digiflow®
FLOWX3 line includes a complete range of paddle
wheel flow sensors, flow meters (indicators) and flow
transmitters along with panel mount instruments and
installation fittings. Additional Digiflow®
FLOWX3 products include no-flow switches, ultra low flow
meters, insertion type electromagnetic flow transmitters and
dosing pump actuators.
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