level controller Articles

  • The Next Generation of Level Control

    Water is an essential resource for everyday life, and thus having a way to store and distribute water is of critical importance. Water storage tanks have been designed to compensate for varying water demands during high and low peak periods, as well as for firefighting, power outages and other emergency demands. There are many ways to store water in a distribution system, but what it all ...


    By Mueller Water Products

  • An Enforcement-Coalition Model: Fishermen and Authorities Forming Coalitions

    The paper sets up a four-stage enforcement model of fish quotas. The purpose of the paper is to show how the level of enforcement set by the authorities affects the way fishermen form coalitions. We show that a high level of control effort yields less co-operation among fishermen, while in the case of low control effort, coalitions are somewhat self-enforcing. The paper further discusses how the ...


    By Springer-Verlag GmbH

  • Stable design of Takagi-Sugeno fuzzy controllers for a laboratory three-tank system

    This paper suggests a stable design approach dedicated to the Takagi-Sugeno fuzzy controllers for the water-level control of a laboratory three-tank system. The design approach is based on a simplified application of LaSalle's global invariant set theorem. An original stability analysis theorem offers sufficient inequality-type stability conditions that enable the controller design and tuning. ...


    By Inderscience Publishers

  • Project Bogota, Colombia - Case Study

    Landustrie supplied a total of nine (9) screen cleaning machines - type R71 - for several Sewage Pumping Stations of the Bogota Water Authority in Colombia. The Pumping Stations are located at Fontibon, Gibraltar, La Isla, Salitre, San Benito and Villa Gladis. All screen cleaners have been supplied with additional drive track, columns, control cabinet, electrical and level control ...


    By Landustrie Sneek BV

  • Water bottling plant chooses Greyline for level control - Case Study

    When of Calgary Alberta needed to automate water tank levels at their bottling plant in Calgary Alberta they called on Packaging of High River, Alberta for system advice. They selected Greyline SLT32 Ultrasonic Level Monitors with digital level display and programmable control relays for level control in five stainless steel tanks. Culligan were able to double up level monitoring of two tanks ...


    By Greyline Instruments Inc.

  • Water bottling plant chooses Greyline for level control - Case Study

    Culligan were able to double up level monitoring of two tanks with one instrument because pairs of identical-sized tanks were interconnected with a 2” pipe near their base. The Greyline SLT32 was calibrated to display the combined volume of both tanks. This function worked with a two vertical tanks as well as a pair of horizontal round tanks where the SLT32’s HRT round tank volume ...


    By Greyline Instruments Inc.

  • Water Bottling Plant Chooses Greyline for Level Control - Case Study

    Culligan were able to double up level monitoring of two tanks with one instrument because pairs of identical-sized tanks were interconnected with a 2” pipe near their base. The Greyline SLT32 was calibrated to display the combined volume of both tanks. This function worked with a two vertical tanks as well as a pair of horizontal round tanks where the SLT32’s HRT round tank volume ...


    By Greyline Instruments Inc.

  • Product modularity, information structures and the diffusion of innovation

    This paper explores how the product design information structure affects innovation types and levels of innovation diffusion. By taking a narrower definition of information structures than previous usages, the author seeks to clarify how specific dimensions of this type of knowledge link with a range of innovation variables in a modular product setting. It is proposed that the type of product ...


    By Inderscience Publishers

  • Performance evaluation and risk management for industrial systems by using fuzzy controller

    In this work, we present a synthesis methodology of a multivariable fuzzy controller for the control of a multi-motor system (MMS) that can be intended for winding and unwinding controlled transport processes. The simulation results show that the integration of the fuzzy multivariable controller brought good performances compared to the multivariable PI-structure controller, and a clear ...


    By Inderscience Publishers

  • Do you need to measure light levels in controlled environments?

    Look no further. This easy-to-use pocket light meter is ideal for both health and safety spot checks and environmental monitoring. Simply expose the photo diode sensor to your desired environment, and highly accurate Lux or Foot Candle measurements will be displayed in real-time on a clear LCD display. Its compact design and robust construction make the instrument impact-resistant and highly ...


    By ATP Instrumentation Ltd

  • Deep Well Measurement

    Pulsar's superior echo processing was proven once again in this difficult very deep Welsh wet well application featuring a 23m 'shot' that needed to follow the level between the heads of two submersible pumps. The reliability and versatility of the advanced echo processing technology in Pulsars non-contact ultrasonic range has been utilised at the SwanseaWasteWater TreatmentWorks, in a 23m deep ...


    By Pulsar Measurement

  • Pump Station call outs a thing of the past - Case Study

    It’s 2:00 AM and a telephone rings in Eckville, Alberta. Rick McKinnon checks the display on his cell phone and groans. It’s another high level call out alarm from one of the town’s new sewage lift stations. He knows before he drives there that the system will be running on floats instead of the new ultrasonic level controller. Rick is Public Works Supervisor for the Town of ...


    By Greyline Instruments Inc.

  • Automatic control of pollutant on a shallow river using surface water systems: application to the Ebro River

    In this paper, the problem of automatic control of pollutant on a shallow river using surface water systems is addressed using a benchmark test case based in the Ebro River. The Ebro River presents flooding episodes in the city of Zaragoza in Spring when snow melts in the Pyrenees. To avoid flooding and high pollutant levels in living areas, some lands outside the city are prepared to be ...


    By IWA Publishing

  • Controlling volative levels of iron solution

    SmartScan® 25 provides an efficient and reliable ultrasonic solution for measuring volume of iron solution in a steel production plant in Kirandul, India. The ESSAR company is located in Kirandul in the Visag district in Central East India. The company produces iron out of nature ore on site. ESSAR company is India's largest exporter of flat products, selling almost one-third of their production ...

  • Getting the best out of consultants 2

    There are many reasons for using a consulting company; a search for objectivity or fresh ideas, the requirement for skills and experience you don’t have, or simply the need for an extra pair of hands. At the right time and for the right reasons the use of consultants can be invaluable. But how do you make best use of a consultancy? 1. Be clear on the purpose, scope and objectives of your task: ...


    By Risktec Solutions

  • Study of banking sector design from risk perspective to minimise social costs

    A comprehensive review of the US banking sector design is currently underway with debates among bankers, trade, consumer groups and regulatory agencies on pricing, The Federal Deposit Insurance Corporation (FDIC) bank insurance fund maintenance and coverage levels for new deposit insurance initiative. A macro design framework is proposed as an input to planned improvements. The objective of the ...


    By Inderscience Publishers

  • Engelhard Corporation (formerly Mearl Corp.) - pigment plant, Crisafulli automated flump system-case study

    Customer: Engelhard Corporation (formerly Mearl Corp.) Contact: Paul Ellington. Type of Facility: Pigment plant. Location: North Charleston, SC. Date of install: 1996 February 1996. Mearl Corporation owns and operates an Automated FLUMP™ System manufactured by SRS Crisafulli. Operation is from shore based control panel. The FLUMP was used to remove mica from a settling pond at a ...


    By SRS Crisafulli, Inc.

  • Deep and Dirty - Derby Sewage Treament Works Inlet tank

    Derby STW had a significant problem with float switches 'ragging-up' in this very large inlet works. Other ultrasonic equipment failed and the customer did not believe an ultrasonic solution could work.....until Pulsar became involved. Pulsar Process Measurement supplied non-contacting ultrasonic level measurement equipment into the main transfer pumping station at Severn Trent Derby STW, in an ...


    By Pulsar Measurement

  • What You Need to Know about Electronic Automation of Hydraulically-operated, Diaphragm-actuated Control Valves

    Hydraulically controlled, diaphragm-actuated control valves are the mainstay of the waterworks industry to control pressure, flow, level, pump control, and at times to meter. These automatic control valves are controlled by pilots to do specific tasks and are mainly single-set-point systems. With the need to remotely actuate and control the valves and the applications becoming more complex, ...


    By IWA Publishing

  • Wastewater Level Measurement Techniques

    Level monitoring and control is a fundamental requirement in any wastewater treatment process. You will find level instrumentation installed at even the simplest treatment plants for pump control, chemical storage tanks and process level controls or alarms. Operators have only limited or emergency control over treatment plant influent, so level controls and instrumentation play an important role ...


    By Greyline Instruments Inc.

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