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Flow Meters

Case Study: New Orleans Addresses Storm Water System Vulnerabilities

Customer As a result of its unusual topography, the city of New Orleans is prone to flooding from the Mississippi River and Lake Pontchartrain, as well as frequent inundation from high intensity rainfall. Since the late 1800s, New Orleans Sewerage and Water Board (NOSWB) has been tasked with providing the city adequate drainage, sewerage collection…

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Welcome FLEXIM to Our Product Line

We at CC Lynch and Associates are excited about our newest flow meter for drinking water, wastewater and thermal energy monitoring; by FLEXIM. FLEXIM offers portable and permanent metering solutions with external pipe “clamp-on” technology and ultrasonic sound. Advantages of FLEXIM ultrasonic clamp-on meters include: Quick and Easy Installation without process interruption or flow by-pass Low installation…

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Solar Power for Flow Monitoring without AC. No Power No Problem.

Solar power arrangements for flow monitoring systems can be an effective remedy for remote locations where power is often unavailable, or too time consuming / expensive to run. Several models of flow meters, auto samplers and water quality analyzers come in models that can operate on 12 or 24 VDC. A solar power system mainly…

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Measuring Flow in Gravity Sewers

There is nothing more difficult than measuring flow in gravity sewers. WRUA bought 34 Isco Area Velocity Meters – Quality Equipment & Post-Sales Service Sealed the Deal.  By Mary Therese Gookin West Rankin Utility Authority (WRUA) provides wastewater treatment for seven neighboring members serving a population of 100,000.  Bruce Stephens, Executive Director of WRUA, a…

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Temporary Flow Measurement Solution With An Improperly Installed Flume

Recently one of our customers was contracted to perform a temporary flow study at a commercial bakery.  The purpose of the flow study was to quantify the volume of process wastewater being discharged so a pretreatment system could be designed and installed to satisfy the requirements of the local water control district.  Our customer reached…

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Multiple Outfall Flow Monitoring Application Challenge

A recent application challenge was presented to us by an industrial customer in the Southeast Texas area. The customer was relocating their final outfall from their wetland treatment system to a remote area without AC power. They needed a way to measure flow rates in three side by side 36” culverts and collect flow weighted…

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How Larger Flow Meters Speak Volumes

This article was written and originally shared by Richard Lowrie, Water and Wastewater Industry Specialist, KROHNE, Inc. Water is money! The price of water is increasing all over the world; due to this the water industry wants the highest accuracies possible on the methods of flow measurement used. In large distribution networks, meters over 48…

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Fundamental Principles of Electromagnetic Flow Measurement

Just as valuable as Teledyne Isco’s Open Channel Flow Measurement Handbook, Krohne’ has “written the book” on magmeters.  Download your copy of the Fundamental Principles of Electromagnetic Flow Measurement by Friedrich Hofmann of Krohne.  This book describes:

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Validating MagMeter Calibration

Electromagnetic Flow Meters (commonly referred to as magmeters) are one of the most common techniques for metering flow in the water / wastewater industry; primarily because, when installed properly, this is one of the most accurate and reliable measurement techniques available. Magmeters are factory calibrated on precision test stands; usually to NIST traceable standards. Over…

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Fundamentals of Electromagnetic Flow Meters – Grounding

To understand the importance of grounding in Electromagnetic Flow Meters (EMF) let’s start by making sure we understand the basic principles of an EMF.  EMFs theory of operation is Faraday’s Law of Induction which states that a voltage is induced across a conductor moving through a magnetic field.  In terms of an EMF this means…

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Teledyne Isco 2150 Flow Meter Found After Hurricane Isaac

For several years the Louisiana Coastal Protection and Restoration Authority has utilized 3 Teledyne Isco 2150 Area Velocity Flow Meters to monitor freshwater flow into Coastal marshes. The Caernarvon Freshwater Diversion Project takes sediment laden freshwater from the Mississippi River and allows it to flow into the marsh providing nutrients and sediment needed to restore…

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Proper Flow Meter Mounting

The mounting location of your flow meter is critical to the overall flow monitoring station layout.  It should be in a convenient location that lends to easy access for authorized personnel while taking into account security and environmental considerations.  In open channel applications where a flume or weir is used, the meter should be located…

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“Made for the Shade” Temperature Effects on Ultrasonic Sensors

Ultrasonic flow meters are commonly used to measure flow through a flume or across a weir.  Often, the temperature effects on ultrasonic sensors are overlooked in the design and  installation process.  This type of flow meter utilizes an ultrasonic sensor which is mounted above the flow stream.  The sensor transmits a sound wave, or pulse, which is reflected off…

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Applying Ultrasonic Clamp-on Transit Time Flow Meters

Ultrasonic clamp-on transit time flow meters offer a non-intrusive method of flow measurement of liquid filled pipes and are a useful tool in many temporary and some permanent full pipe flow applications. Because the sensors are installed on the outside of the pipe, these type of meters are easy to install, making them a good…

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Gravity Flow Measurement in Smaller Pipes – Application Toolkit Part 2

ISCO Flow Metering Inserts Gravity flow measurement in smaller pipes (6 – 12 inches) can present challenges; from access, to technique and cost.  With everything below grade, access tends to be the final manhole; out near the site’s perimeter. In these cases, ISCO’s Flow Metering Inserts can play an important role in our Application Toolkit.…

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The New Isco LaserFlow Non-Contact Flow Meter

We are excited to announce that in October 2012 Teledyne Isco will begin shipping the new LaserFlow non-contact flow meter. The LaserFlow meter remotely measures flow in open channels with non-contact Laser Doppler Velocity technology and non-contact Ultrasonic Level technology. The LaserFlow is unlike other non-contact flow meters which only measure surface velocity.  The LaserFlow…

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Isco Hot Tap Insertion ADFM Used for Pump Capacity Verification With 0.5 Pipe Diameters Downstream Straight Run

Pump performance curves or characteristic curves provided by pump manufacturers characterize the performance of the pump under ideal or “laboratory” conditions. Once installed in the field there are a number of conditions that could potentially impact the performance of the pump such as entrained air, impeller wear, improper operation, etc. Therefore end users may require…

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Measuring River Discharge – The Great Mississippi River Flood of 2011

Measuring River Discharge is a common project as the Gulf South representative of Teledyne RD Instruments.  We are often called in to support important measurements.  During the record flood event in spring 2011, we demonstrated the capability of the RDI RiverRay ADCP for the USACE ERDC.  Their local support consultant Dimco, needed a capable Acoustic…

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Real Time Water Quality Monitoring on Rivers

Long term water quality monitoring on rivers can be an arduous chore; and very expensive.  The cost of sending teammates into the field continues to skyrocket, especially when it is over water; not to mention the inherent safety concerns. All this for what amounts to a ‘snap-shot’ of water quality at the time of measurement…

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