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  • Take a Load Off with seepex Cake Pumps
    Delware, OH, waste water treatment plant was looking for a solution to replace their conveyor system. Conveyors are costly and difficult to maintain. A seepex load cell controlled Progressive Cavity cake pump with a $1,500 per square foot mean capital cost savings was the solution.

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  • Extensions to and Roll Out of Data Driven Production Surveillance and Optimization
    In particular the application of data driven techniques to beam pump pump - off controls , circumventing the need for load cells , is highlighted.
  • Periodic operation of a continuous culture of Baker's yeast
    In continuous steady-state operation, the harvesting pump is set for a certain flow rate and not controlled; the feed pump is controlled by a load - cell control system (on- off ).
  • A comparative study of the growth of lactic acid bacteria in a pilot scale membrane bioreactor
    …5) reservoir tank (100.0 L), (6) heat exchanger, (7) level controller, (8) alkaline tank and load cell (6.0 L), (9 … 19) two cocentrifugal magnetic pumps , (20) peristaltic pumps, (21) diaphragm v/v, (22) on/ off v/v controlled by the level controller.
  • High-voltage DC transmission: a power electronics workhorse
    …extending all the way from ground control , for real-time report … the turn-on and - off of 50-60 times … must if the thynstor cell temperature at full load is not to exceed … the ground level and pumped through insulating headers along…
  • Sustainability in architecture
    …necessary for safe passage to entry and exit areas, control by timers and motion sensors Proper cut- off angles - use outdoor lighting … and simplify HVAC zoning loads Use passive zoning design … use of geothermal heat pump , fuel cell , and heat recovery systems .
  • Encyclopedia of Industrial Biotechnology: Bioprocess Bioseparation and Cell Technology 7 Volume Set
    A common method of volume control in a perfusion system is to set the tank dilution rate by controlling the medium outlet continuous pump at a set flow rate and using a level sensor or load cell to regulate the flow rate .... The flow control may be by PID pulsed on/ off control or by PID regulated continuous flow…
  • Reconfigurable Switched-Capacitor Power Converters
    At light load , Vout is usually higher than the desired reference level and thus a large effective pumping capacitance is not required to boost the output voltage. .... A control signal VSC is thus set to ‘‘1’’ to turn off the PMOS transistor MSC, which shuts down the slave cell .
  • High‐throughput microfluidic device for single cell analysis using multiple integrated soft lithographic pumps
    In this work, we have developed a high-throughput mi- crofluidic device for single cell analysis that integrates mul- tiple peristaltic pumps into a microfluidic manifold to im- prove fluid flow control and to increase flow rates. .... In order to characterize the fundamental cell transport and separation capabilities of this device, T-lymphocytes were loaded with two well-behaved intracellular dyes—carboxyfluorescein di- acetate (CFDA) and Oregon green (OG) diacetate off chip.
  • Integration of Fuel Cell Technology into a Hybrid Electric Vehicle
    Starting and stopping the fuel cell requires the controller to open and close relays for the different pumps and fans, turn on and off the buck converter, operate the air … that are proportional to the fuel cell load , open and close the .... OPERATIONAL MODES A simple driver control interface is a must for today's consumers.
  • A Rod Pumping System To Reduce Lifting Costs
    The pumpoff control system utilizes the nearly rectangular shape of the dynamometer card typical of the L1FTRONIC system to identify a pumped - off condition. .... The control computer monitors polished rod load and position from the integral load cell and position sensor permanently mounted in the pumping unit.