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vfd water Applications

  • Differential level transmitter for VFD pump control & flow measurement

    An Ontario municipality deploys Portable flowmeters to solve flow rate discrepancies between sewage pump station effluent and lagoon influent flowmeters. Faced with suspension of construction permits due to flow rate uncertainty, the Township of North Glengarry called on Greyline Instruments to help troubleshoot two permanently installed flow meters.

    By Greyline Instruments Inc. based in Long Sault, ONTARIO (CANADA).

  • Pumps and Wells

    Operational efficiencies make good sense for business and for resource preservation. To extend the life of wells, gain more production from them, and to safeguard expensive pumps and motors from running dry, companies are retrofitting well pumps with VFDs (Variable Frequency Drives). But even with VFDs, wells are not being optimized to produce the maximum sustainable amount of water and are still running dry resulting in damaging hard stops on pump motors.

    Drive-Chat powered remote access systems optimize well and irrigation operations. With it, it’s estimated that irrigation well production can be significantly increased.

    Drive‑Chat powered systems can:

    • Equalize pump and motor speed to maintain safe drawdown levels
    • Monitor well health
    • Eliminate dry holes and the potential for well collapse
    • Avoid pump damage due to emergency stops
    • Extend useful service life of the well
    • Receive real-time alerts before major failures occur

    By DriveConnect based in Brandon, FLORIDA (USA).

  • Force Main Systems Sulfide Odor Control with Hydrogen Peroxide

    Force main systems are typically high sulfide odor generators due to septicity conditions related to full pipe flow and a greater anaerobic slime layer (biofilm) thickness. Primary factors that influence sulfide loading generation in a force main include sewage temperature, BOD, retention time, pipe size and flow. Gaseous hydrogen sulfide (H2S) release at the force main discharge is usually the main concern related to odor and corrosion control needs; however, corrosion problems within the pipe can be of a concern (e.g. "crown cutting") at locations where air pockets can lead to concentrated H2S gas build up. Some basic considerations for assessing an appropriate sulfide odor treatment method for force main systems include: Retention time / duration of control Pump station type / cycling (e.g. vfd; start/stop, etc). Force main injection tap points, if any (e.g. air relief valves) Existence of intermediate re-lift stations or in series pump stations Manifold force main systems

    By USP Technologies based in Atlanta, GEORGIA (US) (USA).

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