Onsite Check Metering
Water & Wastes Digest
August 2008
By Brian Roughan
Portable check metering kit enables verification of virtually any flowmeter
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Flowmeter Foresight
Water & Wastes Digest
August 2008
By Clare Pierson
A flowmeter product specialist reviews new technologies and user guidelines
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Drive-Through Metering
Water & Wastes Digest
August 2006
Marcia Kinley
Flowmeters help Allen County, Ohio, solve I&I problem
Flowmeters Defined
Water & Wastes Digest
August 2006
David W. Spitzer
Vortex shedding, Coanda effect and vortex precession fluidic flowmeters
Selecting Flow Monitoring Technologies for Your Agency
Water & Wastes Digest
July 2005
By Patrick Stevens
The EPA recognized the difficulty faced by municipalities as they try to sort through the performance claims by manufacturers of environmental equipment, and several years ago developed the Environmental Technology Verification (ETV) Program to verify performance of several types of air- and water-related equipment including flow meters.
Going with the Flow
Water & Wastes Digest
February 2005
By Brian Roughan
Appomattox, Va. River Water Authority recently installed an electromagnetic flowmeter in their fluoride feed line to measure instantaneous and total flow
Finding Leaks Leads to Saving Money
Water & Wastes Digest
February 2005
By Betsy Loeff
We hate the expression unaccounted-for water,” Carl Yates, the utility’s general manager, said. “So we started using our SCADA system to monitor nighttime flows in an effort to understand consumption patterns and identify potential problems.”
An Asset Coming of Age
Water & Wastes Digest
February 2005
By John Hengesh
At a basic level, AMR technology enables accurate and timely meter reading with unprecedented efficiency.
The Effects of Flow Conditioning
Water & Wastes Digest
February 2005
James E. Gallagher
The role of flow conditioning is to ensure that the “real world” environment closely resembles the “laboratory” environment
Dealt A Straight Flush
Water & Wastes Digest
August 2004
By Dan McKeague
“Flushing, especially early in the year, was taking my employees away from other, more productive tasks” said Jason Green, owner of CWS.
Advances in Magmeter Technology
Water & Wastes Digest
April 2004
By Jeffrey A. Galvin
For many reasons, applications for magmeters have mushroomed in a number of key markets, including those in water and wastewater.
CMOM is Coming
Water & Wastes Digest
December 2003
Susan McHugh
The U.S. EPA continues to develop proposed National Pollutant Discharge Elimination System (NPDES) permit requirements for capacity, management, operation and maintenance (CMOM) programs for municipal sanitary sewer collection systems. New CMOM programs for municipal sanitary sewer collection systems have been designed to limit the number of sanitary sewer overflows.
Flow Monitoring Springboards City to System-wide Sewer Management Solution
Water & Wastes Digest
April 2003
The forward-looking Metropolitan Sewer District of Greater Cincinnati (MSDGC) saw a dynamic model of most of Cincinnati's collection system as the tool that would support improved sewer system management, including sanitary sewer overflow (SSO) and combined sewer overflow (CSO) control, planning, and operations.
How Does Pump Suction Limit the Flow?
Pump Source
April 2003
One of the claimed advantages of centrifugal pumps over positive displacement pumps is their ability to operate over a wide range of flow. Since a centrifugal pump operates at the intersection of a pump curve and a system curve, by varying the system curve the operating point of the pump easily is changed. The convenience and simplicity of such flow control by the discharge valve throttling comes at a price because a pump is forced to run either to the left or right of its best efficiency point (BEP). The flow must be limited on both sides of the BEP.
Assessing Leakage in Water Supply Networks Using Flowmeters
Water Engineering & Management
March 2003
Richard Furness, PhD., CEng. and ISA Fellow
Flowmeter usage is diverse and central to the entire water cycle control within the industry. The metering process directly or indirectly influences resource management, process control, new works planning, distribution management, leakage detection, financial control and environmental issues.
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At Work on Flow Metering Devices
Water Engineering & Management
January 2003
Professional flow data analysis now is accomplished easilyby the city's own engineering staff utilizing data management and report generation software.
Keeping Meters On Line: Accurately Measuring Drinking Water and Sewage
Water Engineering & Management
September 2002
Rodney Johnson
Detroit Water & Sewerage Department (DWSD) has a high stake in keeping its flowmeters up and running with calibrated accuracy. This is especially true for its 278 wholesale water meters used in its vast network of distribution lines that serve 126 communities. It also is true for metering sewage inputs from wholesale customers for its Wastewater Treatment Plant. This article focuses on a unique answer that DWSD found for keeping its magnetic meters online by means of a portable electronic system that verifies and certifies calibration, all done in-line.
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Meters - High-accuracy Stormwater, CSO Flow Monitoring
Water & Wastes Digest
July 2002
Ultrasonic transit-time flowmeters can be used to good effect for meeting specific site monitoring and documentation requirements by providing highly accurate and continuous flowrate measurement during dry- and wet-weather conditions.
At Work on Flow Measuring Devices
Water Engineering & Management
January 2001
In the past, a pitot tube meter was used to profile the pipe and measure the flow at the two points. The valuable time required by divers to accomplish flow profiling on the gulf sea floor and less than satisfactory results led to a search for a better flowmeter.
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Multi-year Project Wraps Up With Installation of Permanent Flowmeters throughout Dallas
Water & Wastes Digest
January 2000
The City of Dallas recently awarded a $1.3 million contract to Byrd/Forbes Associates, Inc., which will employ American Sigma 950 Portable Area Velocity Flow Meters to perform temporary and permanent flow monitoring. The overall project includes GPS (x, y, and z) of each manhole for use in updating system maps and construction of a dynamic hydraulic model.
Open Channel Flow Reporting Improved and Streamlined
Water Engineering & Management
January 2000
FlowReporter programs can be adapted to operate with other microprocessor-based flowmeters provided the necessary technical specifications are supplied to accommodate such adaptations or program developments.
Company Eases the Work Flow with a Process Calibrator
Water Engineering & Management
January 2000
Eight years ago, Dan Dickerson, who owns Control & Instrument Services in Worthington, Ohio, decided it was time to break from his job at a civil engineering firm, strike out on his own and start his own business. It paid off. Today, Dickerson's firm is one of Ohio's paramount field testing companies.
Flowmeter Helps Industry Measure Success
Water Engineering & Management
December 1998
Many industrial companies rely on accurate metering of the liquid they process through their plants. When the metering fails, so does the process. A paper mill in West Monroe, Louisiana, Riverwood International, discovered this a few years ago when operators found that existing flowmeters were unreliable.
Velocity Flowmeter Aids Sanitary Wastewater Sewer System Evaluation Survey
Water Engineering & Management
May 1997
The end of the sewer line for unincorporated Sedgwick County is the Kansas Coliseum. Home to two professional sports teams, the 10,000-seat events arena hosts concerts, exhibitions and livestock shows. A 25,000-seat outdoor amphitheater expansion is now being considered. In addition, a proposal is in effect for a nearby residential development.
Accurate Flow Critical for Successful I & I Studies
Water & Wastes Digest
September 1996
In the fight to relieve pressure on wastewater treatment plants from having to treat excessive amounts of clean water pouring into sewer systems from rainfall events, municipalities and their consultants have been building hydraulic models to determine the most cost-effective method for rehabilitating deteriorating systems.
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