Flow Measurement

Closed & Open Channel Flow Meters

 

Measuring flow rate within a closed pipe can be achieved with many different metering technologies. Pipe size, fluid type and velocity are important factors when selecting the appropriate meter for your measurement application. Magnetic Flow Meters, Acoustic Doppler Insertion Meters and Ultrasonic Transit Time Meters are the most common meters used in the industry.

With your application and budget in mind, let us help determine the best flow measurement tool for you. We work with a variety of manufacturers to measure flow within closed pipes, open channels, flumes and river applications. No application is too big or too small. For more information and to speak with a representative within Texas, Louisiana, Mississippi, Alabama or the Panhandle of Florida, please use the contact form or call our 24-hour product support number.

Teledyne ISCO Flow Meters

Standard Features

  • Multiple simultaneous flow technologies
  • SDI-12 input
  • RS-485 Modbus input
  • RS-485 Modbus output
  • NEW! Rain gauge input
  • Multiple parameter data logging
  • Program and Summary Reports
  • Data integrity verification
  • Triggering, sampler enabling
  • Compatibility with Flowlink® software

ISCO Signature® Flow Meter

The Signature flow meter is designed for open channel flow monitoring applications. It supports flow measurement technologies, including bubbler, non-contact laser area velocity, submerged Doppler ultrasonic area velocity, and ultrasonic. The meter can calculate flow using standard open channel level-to-flow and area velocity conversions and user-defined equations, level to area data points, or level to flow data points, depending on the application need.
The Signature flow meter has unique features to verify data integrity. It logs key events such as changes in calibration and power outages to validate data accuracy. Data can be easily reviewed to detect any type of data alteration. With multiple smart interface options and multi-parameter logging (such as pH), the Signature flow meter provides a common platform for control action, reporting, and communication.
Multiple flow technologies are available so you can select the best flow technology for the measurement site and channel conditions. Available technologies are bubbler, ultrasonic, continuous wave area velocity, and non-contacting LaserFlow™ velocity.

Applications

  • Industrial Pretreatment Compliance
  • Shallow Flow Measurement in Large and Small Pipes
  • Permit Enforcement
  • Wastewater Treatment Plants
  • Outfall

Isco Non-Contact LaserFlowTM Velocity Sensor

Ultrasonic clamp-on flow meter

Remotely measures flow in a pipe or channel using advanced technology to measure velocity with a laser beam at single or multiple points below the surface of the wastewater stream. During submerged conditions, flow measurement continues without interruption with an optional Doppler Ultrasonic Area Velocity technology.

Plasti-Fab Flow Measurement

Flumes

By far the most widely accepted flow measurement device is a flume. With over 40 years experience assisting customers with selecting the appropriate flume for their applications paired with Plasti-Fab, Inc.’s high quality corrosion resistant flumes, let C.C. Lynch & Associates, Inc. help you design your next flow measurement system.

Need a Flume for your project? Visit our Plasti-Fab page for more details and PDF downloads.

Palmer-Bowlus Flume

Widely used for flow measurement in manholes and temporary flow studies due to it’s small size and ability to install in existing sewer lines.
Available in sizes 4” to 72” covering flow ranges from 2-80 GPM and 600-91,000 GPM, respectively.

  • Precise throat dimensions for accurate flow measuremen
  • Standard 1/4” wall thickness
  • Free standing with up to 30” of Water Depth
  • Premium Grade Isophthalic Gel Coat for long term corrosion resistance
  • Head Gage
  • Reinforced with engineered box rib design for strength on larger sizes

Trapezoidal Flume
Fiberglass Reinforced Polyester For Corrosion Resistance

Covering a wide range of flows these flumes were originally designed for use irrigation canals. The sloped sidewalls provide great resolution for applications with significant variance between low and high flow rates.

Available sizes cover flow ranges from 1-30 GPM up to 320-21,970 GPM.

Parshall Flume

The most widely used flume for flow measurement. Available in sizes 1 inch through 12 feet covering flow ranges from 2-90 GPM up to 3,060-255,000 GPM, respectively.

Available as a nested flume to accommodate facility expansions. Magic Bottoms available to correct a submerged flume condition.

  • Precise throat dimensions for accurate flow measurement
  • Standard 1/4”wall thickness
  • Premium grade isophthalic gel coat for long term corrosion resistance
  • Head Gage for visual fluid level check
  • Reinforced with engineered box rib design for strength on larger size
  • Free standing with up to 30”of water depth
  • The most widely used water measurement flume

H-Flumes

Requiring free fall from the end of the flume the H, HS, and HL flumes are fantastic flumes for applications with significant variance between low and high flow rates.

Available in sizes 0.4’ to 4’ covering flow ranges from 1-30 GPM up to 10, 38,550 GPM, respectively.

  • Widest Range of Flow Available
  • High Tolerance to Velocity
  • Low Maintenance
  • Standard Sizes from 0.4’ to 4.5’
  • Engineered & Built to Order

 

Packaged Metering Manhole

Introduced by Plasti-Fab over 20 years ago, a PMM is the easiest way to properly install a flume in an underground pipe. Integral flume with smooth non-porous bacteria resistant manhole interior. 

A complete Packaged Metering Manhole designed for easy installation to solve flow measuring requirements in one clean package.

  • HEAVY DUTY COMPOSITE BARRELS • 48”, 60”, and 72” diameter barrels are standard, custom sizes are also available.
  • WATERTIGHT - one-piece construction with an integral bottom that completely eliminates infiltration.
  • LIGHTWEIGHT - weighs less than 10% of a comparable concrete structure, which facilitates a faster and easier installation.
  • CORROSION RESISTANT - extremely resistant to numerous chemicals, salt water, corrosive soil conditions, ground water, and electrolysis.
  • STRONG AND DURABLE - built to exceed the structural requirements of ASTM D-3753.
  • Smooth white interior gel coat finish provides a clean workspace inside the manhole, and maximizes available illumination.
  • COST EFFECTIVE - an excellent alternative to expensive large underground installations.

Stream/River Flow Measurementment

StreamPro ADCP
Acoustic Doppler Current Profiler

The StreamPro utilizes patented ADCP technology to measure stream discharge in channels less than 20 feet deep. The StreamPro measure velocities in discrete cells from top to bottom as the boat passes from one bank to the other mapping the streambed. Find out why Teledyne RDI’s patented technology excels over competitive ADCPs.

RiverPro ADCP
Acoustic Doppler Current Profiler

The RiverPro is the newest auto-adaptive ADCP from Teledyne RDI. Designed for rivers and streams 20 centimeters to 25 meters deep. 20 Degree beam angles allow velocity data to be collected closer to the bottom. 600 kHz 5th beam collects true vertical velocity with calibrated RRSI and range to bottom. Fully integrated GPS for geo-referencing.

RiverRay ADCP

Acoustic Doppler Current Profiler

The RiverRay is a user friendly ADCP that goes straight to work once it’s placed in the water. This unit selects which modes to operate in and makes mode changes as necessary on the fly.

ChannelMaster H-ADCP

Acoustic Doppler Current Profiler

Most commonly used as an index-velocity flow meter, this horizontal fixed mounted unit can be used for discharge measurements in canals or to monitor currents at potentially significant boat traffic lanes. Multiple frequencies are available covering a channel width from 3 feet up to 900 feet.