Vortex flow meter

Vortex Flowmeter

An obstruction in a pipe creates vortices on the downstream side of the obstruction. Temperature or pressure sensors measure the vortices to gauge the strength of flow.

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Aalborg’s unique dual signal processing technology independently measures each vortex on either side of the bluff body and filters out non-flow noise. This results in less noise and higher accuracy throughout the flow range.
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For years, Vortex Technology has been an economical way to monitor constant liquids, steam and constant density gas flows. Sierra's Volumetric Vortex product line features an inline version, the Model 220 Innova-Flo® and a unique insertion version, the Model 221 Innova-Flo®. Both models use Sierra’s state-of-the-art vortex sensing technology tied into a sophisticated on-board computer. The Model 220 and Model 221 have smart electronics that extends the sensitivity and rangeability of the meter far below that of conventional vortex meters. Program in a constant density, and a mass flow readout is achieved. Both models are loop powered for extreme ease of installation. When you need to monitor liquid flows, think Innova Flo® !
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Nice Instrumentation has been in business since 1985. Our company has focused energies on the design and implementation of the vortex technology for the purpose of flow measurement of steam, gases, and liquids. Our experience base dates back to the beginning of the vortex technology. Gerald Nice, president and owner of Nice Instrumentation Inc., helped design one of the first vortex meters sold in the world, in nineteen seventy three when he worked for Neptune Measurement Inc. , the inventor of vortex shedding, prior to starting his own company.
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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 Products

Sierra: Model 220 Innova-Flo® Inline Volumetric Vortex Meter

Volumetric flow monitoring of most gases, liquids and steam
Rangeable down to Reynold's number of 5000
In-line sizes from 1/4 " to 8"
1% rate accuracy (liquids) or 0.7% for gases over a 30:1 turndown
Fully field configurable
Loop powered with 4-20ma output

Sierra's Model 220 Innova-Flo provides a direct reading of volumetric flow for liquids, steam or constant density gases. Product accuracy is ±1% of rate for liquids and 0.7% of rate for gases and steam over a 30:1 range. The Model 220 is hazardous area approved for FM, CSA, and CE and available in flow body sizes from 1/4-inch up to 8-inches.

The Model 220 allows for a constant density input to calculate mass flow for incompressible fluids or constant density gas or steam flow. The product features loop power, simple installation with ANSI flanges and a 4-20 loop output. A separate totalizer pulse output is also standard. Smart electronics provides access to all measured variables and programming menus.

Aalborg: Vortex Inline Flowmeter

BENEFITS
- RELIABLE No moving parts to wear or fail.
- Electronics can be remote mounted up to 30.5 m
  (100 ft).
- No fluid to sensor contact.
- No holes to clog.
WIDE RANGEABILITY
- High flow turndown ratio up to 80:1.
- Dual signal processing technology improves accuracy at low flows.
HIGH ACCURACY
- 0.5% of rate.
- Increased noise cancellation as a result of dual signal processing technology.

Vortices are created when a fluid passes around a bluff body as shown below.Vortices are alternately shed on each side of the body, 180 degrees out of phase to each other, resulting in an oscillating pressure gradient. As flow increases the frequency of vortices increases in proportion to the increased flow thereby creating a linear relationship.

AALBORG’s unique dual signal processing technology independently measures each vortex on either side of the bluff body and filters out non-flow noise. This results in less noise and higher accuracy throughout the flow range. Dual signal processing technology independently measures each vortex providing increased accuracy and turndown.

Nice Instrumentation : Low Profile Insertion Vortex Meter

The same insertion meter can measure Steam, Gases or Liquids.
Standardize on an insertion bar that can measure line sizes 2” – 24”
Heavy Duty & Maintenance Free Design
Insertion bar is C&C Machined from solid stainless steel stock
All parts are electron beam welded together
No moving parts
Sensors never touch process fluid
No holes to clog
Can handle process pressure over 1000 psig
Can handle process temperature up to 450 °F (standard) and 650 °F (high temp)

Sure Flow : SERIES V1, V2, V3, V4 Vortex Shedding Flow Meter

Plastic Construction Flow Meters Water, Ultra Pure Water, Corrosives, Light Viscosity Fluids, Air and Gases

Full scale flow ranges from 5 to 2500 GPM
Connection sizes from 1/4-inch to 8-inch flange, wafer, NPT or tube
Construction materials: PVC, CPVC, Polypropylene and PVDF
No moving parts
Standard 4-20mA output
Optional removable sensor
Optional ultrasonic sensing style
Optional high purity service