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  • The Zen Of Smart Pressure Management Calming Water Distribution Networks
    scarcity population growth and increased economic activity ensuring sufficient pressure to keep the taps on remains an everyday challenge for water companies Most networks are a massive distributed mesh where flow can be constricted by varying pipe diameters and legacy engineering technology Corrosion and sediment are common problems creating friction that constrains the smooth flow of water to each and every customer Traditionally pumps or pressure reducing valves PRVs would be set at an increased water pressure to compensate for frictional flow loses The target pressure would be set to ensure adequate customer service for all at times of peak demand During periods of low water demand however high levels of pressure in the network would place pipework under significant additional stress High levels of leakage and increased burst frequency were an unfortunate byproduct of ensuring there was sufficient pressure to satisfy customers during peak hours Simple solutions to this problem involve manually scheduling pressures according to time of day but these can cause problems when pressures are increased ahead or behind actual demand by generating pressure volatility and surges in the network that cause bursts and water quality problems Manual calculations lead to conservative target pressure setting that unnecessarily stresses the network Facing scarcity challenges regulatory scrutiny and high levels of energy consumption typically a huge operational cost the most advanced water companies have started using data analytics and automated systems from firms like i2O Water to optimize how they control pressure in their networks Water companies can now monitor flow rates and associated pressure variation in their network to learn the relationship of pressure with differing patterns of customer demand This then allows them to automatically adjust pressures to meet changing patterns of water demand achieve a calm network and minimize the excess network stress that drives up leakage and burst frequency An implementation of i2O technology at Manila Water s N Domingo Pump Station in the Philippines has yielded impressive results The region it serves includes areas of high elevation requiring pumps to maintain specified pressure levels to deliver a constant supply of water It serves a wide range of domestic and commercial customers including hospitals hotels schools and colleges and experiences highly variable demand for water Flows range from 40 liters second l s or 634 gpm at night to 175 l s 2 774 gpm during periods of peak demand By using smart pressure management technology to automatically adjust pump settings Manila Water has maintained a stable target pressure to the customer and removed excess pressure from managed zones Since the implementation it has achieved target service levels 99 8 percent of the time up from 88 percent previously reduced leakage by 18 percent and achieved energy savings of 283 kWh per day at its pumping station In the UK Anglian Water wanted to find more intelligent methods for controlling its pump fed zones and decided to trial i2O technology in four district metered areas DMAs Following a period of flow and pressure data logging

    Original URL path: http://www.wateronline.com/doc/the-zen-of-smart-pressure-management-calming-water-distribution-networks-0001 (2016-02-14)
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  • Top 7 Factors To Consider When Choosing A Water Level Meter
    can be tricky especially if you are doing it for the first time Water level meters are used by many industry professionals for measuring the depth to water in wells boreholes standpipes and tanks Today we bring you a one stop guide on the factors you should consider before purchasing a water level meter Water level meter should have an accuracy of 5 percent under field conditions Before purchasing any water level meter be sure to get a calibration This demonstration should yield an accuracy of at least 2 percent so that allow for some degradation and loss of accuracy before it will begin to fall outside the 5 percent threshold Meter should be tamper proof The water level meter you purchase should be tamper proof Where unauthorized interference can occur it should be easily detectable to warn you of the same You can also opt for a wind resistant meter that doesn t bow in the wind giving more accurate measurements Self Contained The water meter you choose should be completely self contained It should not require any external power or ground Mostly the ones operating on batteries are acceptable Easy to read The water level meter you have in mind should provide flow data as instantaneous and totalized rates The ratings should be simple to operate and read The level marking should be accurate and permanent and not become faded after few uses Probe The probe should be designed to reduce or eliminate problems with cascading water The probe design should permit submergence below water and for groundwater measuring as well Is should give improved operation in both cascading water and low conductivity water Longevity You should also factor in the average longevity of water level meters Primarily this can depend on the meter type the situation it

    Original URL path: http://www.wateronline.com/doc/top-factors-to-consider-when-choosing-a-water-level-meter-0001 (2016-02-14)
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  • The Benefits Of Cone-Type Flow Meters
    Water Reuse Regulations and Legislation Providers YSI a Xylem brand Hach Company Schneider Electric Neptune Technology Group Inc Evoqua Water Technologies Veolia Water Solutions Technologies ABB Measurement Products Aclara Jacobi Carbons Endress Hauser Inc KROHNE Inc Kaeser Compressors Inc Emerson Process Management Rosemount Analytical Degremont Technologies Brentwood Industries View All Providers From The Editor May 6 2014 The Benefits Of Cone Type Flow Meters By Kevin Westerling KevinOnWater Selecting the proper flow meter will take an operator through a fairly typical vetting process including consideration of capital expenditure CAPEX O M requirements effectiveness and durability Manufacturers of all meter types e g Venturi meters magnetic flow meters magmeters cone meters etc will surely claim to excel in these categories but can they back up the claim During a recent discussion with Nick Voss of McCrometer Inc I challenged him to get specific on the performance aspects of the V Cone differential pressure DP flow meter For those unfamiliar with the functionality of a cone meter his answers to the key decision making parameters cost maintenance and reliability may provide food for thought as you analyze your options Like what you are reading Sign up for our free newsletter SIGN ME

    Original URL path: http://www.wateronline.com/doc/shape-matters-the-benefits-of-cone-type-flow-meters-0001 (2016-02-14)
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  • Instrumentation Dos And Don’ts For The Water Industry
    always actually the cheapest Some instruments have significant installation costs so the overall cost of the product is less than an instrument that seems more expensive upfront Figure 1 Which is cheaper The electromagnetic flow meter on the left or the radar flow meter on the right in terms of meter cost the flow meter on the left In terms of total expenditure the meter on the right What is the right instrument In some situations choosing the right instrument for the right job is the most important factor Often when instruments are selected a number of mistakes are made These include a company not asking the supplier what is an appropriate application for a particular instrument or a supplier being adventurous as to the application of their technology in order to get a sale At this point honesty is certainly the best policy as a single sale of an instrument can be made relatively easily but if a relationship between company and supplier is developed significantly more sales can be made Care also needs to be taken where specific regulations exist around particular applications An example of this in the UK is the Self Monitoring of Effluent Flow under the MCERTS Regulations A mistake that I saw recently involved the purchase of ammonia monitors with Ion Selective Electrodes ISEs for the monitoring of effluent flow from the treatment works The ISE although it is a perfectly good and cheaper instrument was inappropriate for this application and failed within a few weeks Installation The installation of instruments is probably one of the most common reasons why an instrument goes wrong This happens for a variety of reasons The first question to ask is whether or not an instrument is placed in the right location to measure the right thing Is there undue vibrations that are going to cause the instrument to be damaged in the transit of normal operation Is the instrument in the right place to take a representative sample or sub sample with adequate mixing for quality analysis or with appropriate condition flow as well as quality Is the instrument in a place where it can be operated and maintained or replaced as needed when the instrument breaks Are all of the elements of the instrument installed correctly and in the right place Figure 2 below shows some poor instrument installations Figure 2 L to R An electromagnetic flow meter with inappropriate clearance between it and a control valve a suspended solids monitor inaccessible for operations and a temperature compensation monitor installed in a cabinet The example in Figure 2 above shows an electromagnetic flow meter which was installed within 3 pipe diameters downstream of a modulating penstock This is contrary to the manufacturers minimum requirements of 5 pipe diameters and certainly contrary to studies that have suggest it should be 15 pipe diameters By chance there was a regulated flow meter for this site and by comparing the two flow meters the error can be compared and

    Original URL path: http://www.wateronline.com/doc/instrumentation-dos-and-don-ts-for-the-water-industry-0001 (2016-02-14)
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  • Level Measurement Showdown Ultrasonic Vs Radar
    the price The average ultrasonic level measurement instrument costs 500 to 2 000 Radar level measurement instruments used to cost up to 4 000 but now have dropped down to 1 000 to1 200 on average putting the two instruments at a nearly level playing field in terms of cost People should still look at ultrasonic because it is still less expensive a high end ultrasonic will cost the same as a low end radar Lowrie explained But I think the radar will keep dropping in price because people want the technology Effectiveness And Versatility One factor in determining which instrument is best is the intended application Nicholas Paradiso a consulting engineer with CDM Smith recommends radar level measurement instruments to his clients that work in wastewater because oil grease and other coatings can sometimes interfere with the accuracy of ultrasonic measurement instruments Any application where you aren t dealing with 100 liquid we would want to use radar over ultrasonic because radar can see through solids better Paradiso explained But this is only really relevant in wastewater and not water treatment unless you are dealing with a chemical tank Dust foam and cobwebs can also present problems for ultrasonic level measuring instruments and measurement accuracy can be affected by wind temperature and snow in outdoor tanks Radar doesn t have these limitations said Anglian s Grievson If the instrument isn t cleaned which is a common problem or there is foam direct sunlight or other difficult conditions this is where radar has a benefit he said Operations that use silos large wells or oversized tanks may also benefit from radar which has a longer range Typically an ultrasonic instrument can get an accurate return signal from a maximum of 60 feet away while a radar instrument can get a return at up to 300 feet However this large range isn t always necessary In the water and wastewater industry a lot of times ultrasonic s range is suitable said Krohne s Lowrie Normally you are dealing with 30 to 40 foot tanks at a wastewater facility It could be considered overkill to use radar in some applications Setup And Use Complexity is also a consideration when it comes to selecting between ultrasonic and radar Ultrasonic meters have a shorter deadband a minimum distance they have to be above the liquid surface which can be limiting But setting up a radar instrument isn t as simple as setting up an ultrasonic instrument With radar when mounting the actual instrument I ve noticed that there are very specific distances you have to have it away from other equipment CDM Smith s Paradiso pointed out You may also need to provide a metal plate above it or the radar waves won t reflect back properly Lowrie feels ultrasonic level meters are also slightly easier to use It is just simpler technology he says But I think radar has a wider range of applications Familiarity Despite the benefits of radar Paradiso believes ultrasonic

    Original URL path: http://www.wateronline.com/doc/level-measurement-showdown-ultrasonic-vs-radar-0001 (2016-02-14)
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  • Should You Trash Your Flow Meter?
    comes to high tech flow meters versus their traditional counterparts Generally speaking market research reports aren t terribly exciting reads but they are at times enlightening Studies on how specific technologies are being applied can reveal trends for the industries they serve As statisticians track the rate of adoption and forecast the future end users get a sense of where they stand in relation to the market and their peers I recently came across some interesting analysis from Global Industry Analysts Inc GIA on flow meters which have application across a number of industries However I homed in on the findings relevant to water and wastewater to share with you what they reveal about our corner of the world In what struck me as optimistic phrasing GIA reports that post recession the flow meter market is taking off expected to reach US 5 1 billion by 2017 The study notes that long delayed funding is finally coming through for plant upgrades hopefully you re seeing this and that facilities are increasingly installing high tech flow meters as part of the modernization process Specifically GIA states that ultrasonic and coriolis flow meters are extremely popular among the end users for their precision and reliability The ultrasonic segment in fact is the fastest growing of the group boasting a compound annual growth rate CAGR of 8 29 over the analysis period 2009 2017 Cited benefits of ultrasonic flow meters are improved accuracy obstruction free measurement and significantly lower costs While ultrasonic flow meters are climbing up the ladder the magnetic flow meter magmeter segment remains the largest fueled by its dominance in the water wastewater space Magmeters GIA reports are preferred for their overall reliability and accuracy as well as their capacity in non intrusive measurement As the so called high tech

    Original URL path: http://www.wateronline.com/doc/going-with-the-flow-are-you-high-tech-or-traditional-0001 (2016-02-14)
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  • Township Water Authority Uses Ultrasonic Clamp-On Flowmeters To Avoid Surcharges For Exceeding Peak Limits
    Water Power Generation Water Reuse Utility Management AMR AMI and Metering Asset Management Consumer Outreach Funding Labor Resiliency SCADA Automation Source Water All Source Water Contamination Desalination Water Scarcity Water Reuse Regulations and Legislation Providers YSI a Xylem brand Hach Company Schneider Electric Neptune Technology Group Inc Evoqua Water Technologies Veolia Water Solutions Technologies ABB Measurement Products Aclara Jacobi Carbons Endress Hauser Inc KROHNE Inc Kaeser Compressors Inc Emerson Process Management Rosemount Analytical Degremont Technologies Brentwood Industries View All Providers Case Study November 27 2015 Township Water Authority Uses Ultrasonic Clamp On Flow Meters To Avoid Surcharges For Exceeding Peak Limits Source Siemens Process Instrumentation A suburban township in the upper Midwest United States buys their drinking water from a major municipal water district The township s water distribution system network has four connections to the larger municipality s water transmission main The municipality has many customers and has implemented contracts with each of its wholesale customers that limit the peak flows and the time of day in which they may occur If the wholesale customer exceeds the limit they are assessed significant surcharges Siemens Process Instrumentation Contact The Supplier Contact Details Company Profile MORE FROM Siemens Process Instrumentation Contact

    Original URL path: http://www.wateronline.com/doc/township-water-authority-uses-ultrasonic-clamp-on-flowmeters-to-avoid-surcharges-for-exceeding-peak-limits-0001 (2016-02-14)
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  • Louisiana Wastewater Treatment Facility Benefits From Siemens Product Support
    Stormwater Regulations and Legislation Industrial Food Beverage Petroleum Refining All Petroleum Refining Produced Water Power Generation Water Reuse Utility Management AMR AMI and Metering Asset Management Consumer Outreach Funding Labor Resiliency SCADA Automation Source Water All Source Water Contamination Desalination Water Scarcity Water Reuse Regulations and Legislation Providers YSI a Xylem brand Hach Company Schneider Electric Neptune Technology Group Inc Evoqua Water Technologies Veolia Water Solutions Technologies ABB Measurement Products Aclara Jacobi Carbons Endress Hauser Inc KROHNE Inc Kaeser Compressors Inc Emerson Process Management Rosemount Analytical Degremont Technologies Brentwood Industries View All Providers Case Study November 26 2015 Louisiana Wastewater Treatment Facility Benefits From Siemens Product Support Source Siemens Process Instrumentation A municipal wastewater treatment facility located in Louisiana was having problems with a clamp on ultrasonic flowmeter that was supplied by a Siemens competitor The problem The existing instrument had experienced numerous electronics failures and the plant manager was having difficulty obtaining spare parts The local Siemens sales service partner technician was called to repair or replace the competitive unit Siemens Process Instrumentation Contact The Supplier Contact Details Company Profile MORE FROM Siemens Process Instrumentation Contact Details Company Name Siemens Process Instrumentation Address 1201 Sumneytown Pike PO Box 900

    Original URL path: http://www.wateronline.com/doc/louisiana-wastewater-treatment-facility-benefits-from-siemens-product-support-0001 (2016-02-14)
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