Current Meters Articles

  • Case study - Discharge measurement deep within a cave

    Research is currently being conducted in the Hessenhau cave, located in southern Germany. The cave is the deepest known within the Swabian Alps at 144m (472 ft) and has a stream running through it that connects it to other caves within the area. Discharge measurements were taken in different parts of the cave with the OTT MF pro electromagnetic current meter. Reaching the bottom of the cave ...

  • Case study - Weather data for nautical information system

    In Lemwerder, Germany at the Weser River, wind direction and speed are measured and transferred in 60 second intervals via the OTT netDL 1000.  The data is transmitted, wireless, over a distance of 600 meters to the radar tower in Ritzenbuettel, where it is integrated into the ship traffic network - the Authority for Water and Navigation (WSA), Bremen. The WSA is also responsible for ...

  • How Carbon Trading Can Help Preserve Coastal Ecosystems

    Introduction The ocean is the largest long-term carbon sink on the planet, storing and cycling 93% of the earth’s CO2 . The ocean’s vegetated habitats, in particular mangroves, salt marshes, and seagrasses, comprise only 0.05% of the plant biomass, but store equal amount of carbon as terrestrial biomass per year, and thus stand among the most ...


    By Climate Institute

  • Improved Water Management Propels Growth of Ontario Cheese Maker

    Like all farmers, the Van Bergeijk family works hard from ‘sun up to sun down’ to run their farm in southwestern Ontario. Everything in the dairy farming operation is interconnected. They grow corn on their 325 hectare farm to feed 400 dairy cows. The cows produce 11,000 litres of milk a year. That milk is used to make the prize-winning Mountainoak ...


    By BLOOM

  • The Scientific Story of the Souris: Could the 2011 Flood Happen Again?

    If the current wet climate state of the Souris River Basin continues during the next 10 years, there is a 2 percent chance another extreme flood, similar to that of 2011, will occur, according to a recent report by the U.S. Geological Survey and North Dakota State Water Commission. These and other findings about past and future flooding of the ...

  • Unstable flow structure around partially buried objects on a simulated river bed

    The unsteady flow characteristics around two partially buried objects, a short cylinder and a truncated cone, were examined with a three-dimensional, non-hydrostatic hydrodynamic model under similar steady unidirectional currents with flow Reynolds numbers, Re, of 86,061 and 76,209, respectively. Model simulations were conducted with the two objects partially buried in a simulated ...


    By IWA Publishing

  • BLOOM Wastewater Sensor - Case Study

    Water is an integral input and vital strategic resource for the Ontario Food and Beverage Processing Sector. Water plays a variety of diverse and convergent functions. It is used for heating and cooling, blending, washing and rinsing, convey- ing, cleaning and sanitation – as well as being a vital product ingredient. However, the use of water inevitably leads to the generation of wastewater ...


    By MANTECH

  • Investigating the management of unaccounted for water for Lilongwe Water Board, Malawi

    Lilongwe Water Board (LWB) is currently unable to meet Lilongwe City's water demand as evidenced by low supply coverage (65%) and intermittent water supply in the city. One of the major challenges is high levels of unaccounted for water (UFW) reported at 37% (2012), higher than the recommended 23% for developing countries. This study, done in Lilongwe City (Areas 15, 18 and 28), investigated ...


    By IWA Publishing

  • Case study - Control and monitor algae in a lake

    As part of the Clearwater PMPC project, 2 MPC Buoys were deployed in the Skrzyneckie Małe Lake to test the performance of this unique technology. The Challenge: Control and Monitor Toxic Algal Blooms The ClearWaterPMPC project was initiated by LG Sound and funded by "Research for SMEs" within the EU 7th Framework Programme. The goal of the ClearWaterPMPC (Predicting, ...


    By LG Sonic

  • Are Those Inexpensive iPad Sound Measurement Apps Any Good?

    Are those inexpensive iPad sound measurement apps any good? Are they as accurate as a properly calibrated $2,000 type 2 sound level meter? Let's review three separate studies, and an article: Study #1 In early 2014, NIOSH reviewed 192 sound measurement apps. NIOSH concluded, ...

  • The number one thing we can do to protect Earth’s oceans

    Marine governance favors consumption and commerce over conservation. Here's what we can do about it. When New England fishers complained of working harder and harder to catch fewer and fewer fish, Spencer Baird assembled a scientific team to investigate. Though a fishery failure would once have seemed inconceivable, Baird wrote in his report, “an alarming decrease of the ...


    By Ensia

  • Application of machine learning techniques to predict anomalies in water supply networks

    Methods to improve the operational efficiency of a water supply network by early detection of anomalies are investigated by making use of the data streams from multiple sensor locations within the network. The water supply network is a demonstration site of Vitens, a Dutch water company that has several district metering areas where flow, pressure, electrical conductance and temperature are ...


    By IWA Publishing

  • Sunny Boy Storage is affordable and also flexible applicable

    Independent and affordable electricity supply for your home – until now that was not feasible from a technical perspective. But that’s exactly what the new SMA battery inverter Sunny Boy Storage offers. In March, the inverter has been honored with the Innovation Prize at the PV symposium Bad Staffelstein. Volker Wachenfeld, Executive Vice President of the SMA Offgrid ...


    By SMA Solar Technology AG

  • Development of an adaptive groundwater monitoring framework to inform salinity management across the Victorian Mallee Region - Case Study

    The use of ESdat Environmental Data management system by GHD to develop a groundwater monitoring framework used to create a groundwater monitoring network based on the current needs of the Mallee CMA management ...

  • Chemical Industry: HCL System Exceeds Current Regulations Emission control meets requirements while recovering by-product for sale Case Study

    Chemron manufactures high-quality specialty chemicals and surfactants for personal care products, industrial, institutional, oil field, mining, coatings, lubricants and water treatment. Some of the operations result in the creation of hydrochloric acid with high variable rates. As expressed by Bill Frost, of Chemron: “Chemron maintains a strong environmental commitment, which views ...


    By CR Clean Air Group, LLC

  • Electrical conductivity as a state indicator for the start-up period of anaerobic fixed-bed reactors

    The aim of this work was to analyse the applicability of electrical conductivity sensors for on-line monitoring the start-up period of an anaerobic fixed-bed reactor. The evolution of bicarbonate concentration and methane production rate was analysed. Strong linear relationships between electrical conductivity and both bicarbonate concentration and methane production rate were observed. ...


    By IWA Publishing

  • What will it take to get plastics out of the ocean?

    From drones to filters to artificial islands, innovators are working to reduce the threat thousands of tons of trash pose to marine ecosystems. A few palm trees stand strong in the salty breeze. Located on the southern tip of the Pacific island chain of Hawaii, Kamilo Beach is an isolated stretch of black volcanic shoreline in the middle of nowhere. Just a few hundred yards ...


    By Ensia

  • Multi‐media screening of contaminants of emerging concern (CECs) in coastal urban watersheds in Southern California (USA)

    To examine the occurrence and fate of contaminants of emerging concern (CECs) and inform future monitoring of CECs in coastal urban waterways, water, sediment and fish tissue samples were collected and analyzed for a broad suite of pharmaceuticals and personal care products (PPCPs), commercial/household chemicals, current use pesticides and hormones in an effluent‐dominated river and multiple ...


    By John Wiley & Sons, Ltd.

  • A simple numerical method for snowmelt simulation based on the equation of heat energy

    This paper presents one-dimensional numerical model for snowmelt/accumulation simulations, based on the equation of heat energy. It is assumed that the snow column is homogeneous at the current time step; however, its characteristics such as snow density and thermal conductivity are treated as functions of time. The equation of heat energy for snow column is solved using the implicit finite ...


    By IWA Publishing

  • Discharge Measurement in a Short Intake with a Converging Section – a Case Study

    In the context of a planned retrofit and upgrade of the hydropower plant Wettingen, operated by the Elektrizitätswerke Zürich, three intakes were equipped with acoustic transit time flow measuring devices. Since the flow meters are installed in a converging section, downstream of a pier, it became necessary to perform numerical flow simulations in order to weight the acoustic path ...


    By HydroVision GmbH

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you