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Posts Tagged ‘flow metering’

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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Excessive Approach Velocity in Parshall Flume Flow Measurement Applications

Since the 1930s, wastewater professionals have relied on the Parshall flume as the primary device for open channel flow measurement applications. Parshall flumes provide a very repeatable relationship between water level (Ha) and flow rate; but, only so long as the approaching flow conditions are appropriate. For any flume design, the hydraulics must cause a…

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Teledyne Isco FlowCalc App For Android Release

The release of the Isco FlowCalc app for the iOS platform during WEFTEC 2012 received an excellent response.  I am now pleased to announce that Teledyne Isco has made the application available for the Android platform. The Android version will have the following additional features: Calculation for the Manning Equation Calculation for the Cipolletti weir…

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Water Quality Monitoring With Remote Data Access

The need for remote data access for water quality monitoring stations is on the rise. Not only is there a significant cost involved in sending personnel into the field but there are also safety concerns in working in, over, and near the water. In addition, staff shortages can result in “stretching” out the time between…

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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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What’s a Packaged Metering Manhole?

The Packaged Metering Manhole was introduced to the wastewater market by Plasti-Fab, Inc. in 1982. In its simplest form it consists of a flume molded into a composite (FRP) manhole. The full range of flumes may be integrally molded into the composite manhole, along with inlet and outlet adapters, pipe stubs, and monitoring accessories for…

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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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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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Various Techniques For Flow Measurement At Wastewater Lagoons

There is a stir in flow measurement into and out of sewer lagoons. More and more, we are asked about influent flow measurement for sewer lagoon(s); as engineers try to get a idea on influent flow characteristics; such as peak, dry vs. wet (I&I) and influent load.  Many influent lines can be a challenge; as…

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