flow transmitter Articles

  • NivuFlow 750 - Transmitter with intuitive operation

    NivuFlow 750 is the successor to the well-known OCM Pro CF. The compact dimensions of the new transmitter allow to install the unit on DIN rails and in switching cabinets even under confined conditions. The connecting options using plug-in terminals on the transmitter front ensure quick and reliable wiring as well as to quickly exchange the transmitter without tools. The modern menu-based ...


    By NIVUS GmbH

  • Importance of measuring UV transmittance (UVT) for UV disinfection

    UV disinfection systems disinfect water using UV light at the 254 nm wavelength. UV light at this wavelength actually destroys the DNA of microbiological material in the water which prevents dangerous viruses such as cryptosporidium and e-coli from reproducing and causing harm. UV Disinfection Dose and UV Transmittance (UVT) The effectiveness of a UV disinfection system is ...


    By Real Tech Inc.

  • LIT25 level indicating transmitter controls swimming pool level - Case Study

    The Town of Okotoks, Alberta I never gave it much thought, but what happens to the displaced water when a hundred people jump into a large public swimming pool? It goes into a surge tank - of course. This Greyline LIT25 Level Indicating Transmitter with ultrasonic sensor is installed in the basement of the Okotoks Recreation Centre in Alberta, Canada. The LIT's 4-20mA output is connected to a ...


    By Greyline Instruments Inc.

  • Drift Step Recovery Diode Transmitter for High Power GPR Design

    Some elements of the modern ground penetrating radar (GPR) determine its performance factor, resolution and depth of sounding. There are impulse transmitter, ultra-wide-band receiver as well as transmitting and receiver antennas. Improvement of the GPR's parameters is usually achieved by modernization of receiving circuits, antenna design, decreasing of input noises and using of complex ...


    By Transient Technologies LLC

  • How an Ultrasonic Flow Meter Works

    An ultrasonic flow meter utilizes ultrasound to measure the velocity of a fluid and is used in a variety of fluid applications. Ultrasonic flowmeters are ideal for water and other liquids. Clamp-on ultrasonic flow meters achieve high accuracy at low and high flows, save time with no pipe cutting or process shutdown, and are not affected by external noise. Here’s how ultrasonic flow ...


    By Sierra Instruments, Inc.

  • Development of a self-rechargeable digital water flow meter

    The objective of this paper is to present the feasibility of a self-rechargeable digital water flow meter (SRDFM) system for water pipes using the latest data processing and wireless communication technologies while causing negligible water pressure drop (head loss). The system uses a Pelton turbine generator to power the electronic circuit, which processes and transmits the signals generated by ...


    By IWA Publishing

  • Two Technologies for Flow Measurement from Outside a Pipe

    Doppler and Transit Time are two very popular types of flow meter for non-invasive measurement of flow in full pipes. We tend to confuse these technologies because they are both ultrasonic and both measure flow by using sensors clamped onto the outside of a pipe. In the real world they actually work best in opposite applications. Success in your installation depends on understanding the ...


    By Greyline Instruments Inc.

  • How to Supercharge the SmartTrak Mass Flow Controller with Compod

    Streamline, simplify and save time and money by plugging the innovative Compod upgrade into the face of any SmartTrak 100 mass flow meter or controller. SmartTrak is not only a true multi-gas digital mass flow controller, it can control your process too. ...


    By Sierra Instruments, Inc.

  • DLT 2.0 differential level transmitter open letter from a Greyline customer - Case Study

    The Process: The Municipality of the District of Lunenburg in Whynott's Settlement, Nova Scotia added a septage receiving station to their landfill site. Part of the treatment train is a chlorinated duplex vertical turbine pump station delivering effluent from the sludge processing facility to a field of spray nozzles for dispersion. The pump station has two points of discharge and the ...


    By Greyline Instruments Inc.

  • Flow Tip Video: Learn Why Ease-of-Use is Critical for Flow Meter Selection

    Many times scientists and researchers spend more time setting up equipment and instrumentation for their experiments than conducting actual experiments to gather important data. This holds true for flow meters and controllers to measure and control gases to experiments. Some flow meters are very cumbersome with no display, can only measure one ...


    By Sierra Instruments, Inc.

  • Advances in Thermal Dispersion Mass Flow Meters - Part 2 Installation and Flow Calibration

    Abstract Part 1 of this two-part series describes the principle of operation of a new microprocessor-based thermal dispersion mass flow meter that uses four temperature sensing elements in its flow sensor and has a dry velocity sensor. Part 1 shows how this unique system provides automatic management of changes in gas selection, gas temperature, gas pressure, and outside temperature. This ...


    By Sierra Instruments, Inc.

  • Biologically and Chemically Enhanced Clarification for Improved Treatment of Wet-Weather Flows

    The Milwaukee Metropolitan Sewerage District (MMSD) conducted demonstration testing in 2005 to evaluate high-rate chemically enhanced clarification (CEC) followed by ultraviolet (UV) disinfection, for the treatment of wet-weather flows at MMSD’s two wastewater treatment plants (WWTPs). High-rate CEC—surface overflow rates greater than 20 gallons per minute (gpm) per square foot (ft2) [85 cubic ...

  • Flow Rate Measurement in Full Pipes Using the Transit Time Method

    Particularly in large diameters the relevance of water volume measurement is growing. The challenge with cooling water or fresh water processes is to generate accurate flow recordings or to document and to control individual consumptions and withdrawal quantities. Flow detection, however, particularly in large diameters is highly demanding. In such cases the transit time measurement thanks to its ...


    By NIVUS GmbH

  • Calibration using 5 flow sensors saves the effort of extensive reconstruction measures

    "Abwasserzweckverband Breisgauer Bucht", a municipal association for sewage treatment in the south of Germany, operates a central wastewater treatment plant for its members (29 communities and cities). The WWTP covers a catchment area of 650km² and its treatment capacity is 600.000 population equivalents. The plant is treating wastewater from 375.000 residents as well as from industry and ...


    By NIVUS GmbH

  • Replacement Fill Control Valves with Electronic Flow and Metering Improve Pressure, Stop Leakage and Prevent Valve Failures

    The City of Modesto, California is situated 90 miles east of San Francisco and has approximately 200,000 residents relying on 200,000 of gallons of water a day. The City needed to upgrade three water storage tanks that hold approximately 750,000 gallons each. After years of using motor operated valves to fill water storage tanks, the city recognized that there were just too many problems. ...


    By Singer Valve Inc.

  • Pneumatic dense phase conveying system for the cement industry

    Description: Conveying system over horizontal distances of 120 and 200 metres, with an additional vertical lift of 25 metres.   Client: ENCI Nederland B.V.   Gericke Technology: Pneumatic dense phase conveying system type PHFD 5750/D with silo-discharge and product-delivery facilities. Twin pressure vessel (transmitter) arrangement. Gericke type GB minimum wear conveyor pipeline ...


    By Gericke

  • Evaluation of Inactivation of Cryptosporidium parvum Oocysts in Recreational

    Purpose: To determine the ability of the Hanovia UVP 61 water disinfection system to nactivate Cryptosporidium parvum oocysts suspended in recreational (water park) water.Methods and materials:Test water: The water used for this test was from the Adventure Island water park, Tampa, Florida. A 200 gallon (750 L) volume had been  collected on October 24, 1999, and delivered to Clancy ...

  • Falkirk Council case study

    Falkirk County Council, Scotland Supply and installation and maintenance of a Trash Screen blockage and Flood Warning system, 2006 - ongoing Hydro-Logic was appointed by Falkirk County Council to supply, install and commission a series of 7 sites where there were concerns over flooding. The systems were deployed to supply alarms to a central control office at Falkirk ...


    By Hydro-Logic Services

  • Metek Introduces the New Multi-Path Ultrasonic Anemometers

    Our news report about recent instrumentations or measurements of our customers which might be of special interest for other web site visitors. The reports are added on the fly whenever we have received such information. The experienced support is highly welcome and appreciated. Metek is proud to present the new members of the uSonic-family: The ultrasonic anemometers uSonic-3 Class A ...

  • Role of optical density on the choice of photolytic reactor

    Photolysis and photo–catalysis are two classifications of advanced oxidation processes for treating toxic wastes. Stark–Einstein law and Lambert–Beer's law equation are widely used to explain the kinetics of the photolytic reactions. The optical density influences the rate of reaction. The influence of optical density on transmittance and order of reaction has been analysed. An effectiveness ...


    By Inderscience Publishers

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