Flow Monitoring Articles

  • Flow Measurement in the Cold

    Measuring flow can be a very delicate process depending on the needs of your operation. For instance, measuring flow in cold weather locations is an extremely difficult task. When outdoor temperatures are near or below freezing, it makes it nearly impossible to measure flow as you would in normal circumstances, meaning you must find alternative solutions so that your operation continues to have ...


    By TRACOM Inc.

  • How Does a Water Flow Meter Work?

    A water flow meter works by measuring the amount of water that passes though the flow meter. The most common mechanical types work by measuring the speed of flowing water that causes a turbine or piston to rotate. The volumetric flow rate of the water is proportional to the rotational speed. Other water flow meters include ultrasonic, magnetic and vortex flow meters. The best type of water flow ...


    By Sierra Instruments, Inc.

  • How Does a Thermal Flowmeter Work?

    A thermal flowmeter works by measuring the total mass flow rate of a fluid flowing through a pipe or duct. In a thermal flowmeter’s simplest working configuration, fluid flows past a heated thermal sensor and a temperature sensor. As the molecules of the fluid flow past the heated thermal sensor, heat is lost to the flowing fluid. The thermal sensor cools down while the temperature sensor ...


    By Sierra Instruments, Inc.

  • VIDEO: Mass Flow Meters for Power Plant Applications

    Generating electricity in a natural gas power plant is a complex process due to the multiple steps involved with the different types of fluids being used and optimized. Dr. John Olin, Founder of Sierra Instruments, explains how thermal mass flow meters, vortex flow meters, and ultrasonic flow meters can improve the flow energy management in power plant ...


    By Sierra Instruments, Inc.

  • The Function of an Ultrasonic Flow Meter

    Running a water management operation requires taking a wide range of measurements. In addition to measuring the flow in your system, many systems must measure the water level of their channel, and one of the best tools for accomplishing this goal is an ultrasonic flow meter. ...


    By TRACOM Inc.

  • Open Channel Flow Monitors retired after 16 years continuous service - Case Study

    Long Sault WWTP Influent Flow Monitors Greyline Open Channel Flow Monitors were installed at the Wastewater Treatment Plant in Long Sault, Ontario when the SBR plant was originally commissioned in 1995. But after 16 years of continuous service, components for the old models became obsolete. Plant operators Caneau Water and Sewage Inc. decided to replace the instruments and new Greyline OCF ...


    By Greyline Instruments Inc.

  • Thurston County comments on Greyline Area-Velocity Flowmeters - Case Study

    We have been using Greyline products at Thurston County, Washington for approximately seven years. We use both the Stingray portable flow meters and the permanent Area Velocity Flow Meter (AVFM II) in multiple stormwater applications. We have used these meters to measure stormwater flows to help our design engineers develop flow capacity for stormwater projects. We have deployed the Stingrays at ...


    By Greyline Instruments Inc.

  • Area-Velocity Flowmeter Installations in Denmark - Case Study

    Area-Velocity Flow Meters are designed to monitor flow rates in partially filled pipes and open channels without flumes or weirs. A sealed ultrasonic sensor is mounted on the bottom of the pipe or channel and connected to electronics through a watertight cable. The sensor measures both level and velocity and when calibrated with the pipe diameter or channel dimensions, the Greyline AVFM ...


    By Greyline Instruments Inc.

  • Now Measure All Flow Energy in Your Facility - One Solution - Three Metering Technologies

    Facilities managers at large facilities often have the challenging task of managing all the flow energy in their facility with the mandate from upper management to save money on energy costs. To accomplish this goal, it’s critical to get accurate flow measurement data of the flow energy in your facility such as: natural gas, compressed air, steam, chilled and hot water. ...


    By Sierra Instruments, Inc.

  • Making Ultrasonic Liquid Flow Meter Installation Easier

    Ultrasonic transit-time flow meter technology is becoming one of the most adopted technologies for accurate liquid and energy/BTU measurement. Although a major benefit of the technology is that it is non-invasive and can be clamped to the outside of the pipe, an inherent challenge with ultrasonic clamp on liquid flow meters is finding the best location to measure the liquid. This means ...


    By Sierra Instruments, Inc.

  • 2D and 3D Gold Exploration in Burkina Faso - Case Study

    Background The Salma premise is located in western Burkina Faso within the Boromo Birimian greenstone belt which trends NS. Supracrustal rocks of the district are composed of mafic to intermediate calc-alkaline volcanic series including voluminous basalt and andesite with pyroclastic flows and tuff.  In detail, this permit occurs in the ...


    By Advanced Geosciences, 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.

  • Optimising existing equipment with Bioconservación products

    As part of its technical support service offered to clients on an ongoing basis, Bioconservacion conducted an efficiency study at the express request of one of its customers. The study explored solutions to improve efficiency in eliminating odours origintating from biological reactors through the use of horizontal deodorisation systems. The objective was to guarantee the ...


    By Bioconservacion SA

  • What is Cross Flow Velocity?

    Q: What is Cross Flow Velocity?   A: Cross flow velocity (CFV) is the linear velocity of the flow tangential to the membrane surface and is reported in [m/sec] or [ft/sec]. CFV affects fouling rate and formation of concentration polarization at membrane surface and is calculated by dividing the volumetric flow rate [lpm or ...


    By Sterlitech Corporation

  • Pulse electro-coagulation application in treating dibutyl phthalate wastewater

    Pulse electro-coagulation (PEC) was applied to treat plastic factory wastewater in this study. One representative plasticizer molecule was chosen for the synthetic wastewater: dibutyl phthalate (DBP). Experiments demonstrated that PEC exhibits superior economic efficiency and removal efficiency compared to traditional electro-coagulation in wastewater treatment. Experimental data also ...


    By IWA Publishing

  • Introducing Our New InnovaSonic 207i Ultrasonic Liquid Flow Meter

    For Liquid Flow Metering, Optimized for Thermal Energy/ BTU Sierra is proud to announce the new InnovaSonic 207i ultrasonic liquid flow meter with thermal energy/BTU capability.  Designed, built and calibrated by Sierra in Monterey, California for non-intrusive ...


    By Sierra Instruments, Inc.

  • Strategies for the electric regulation of pressure control valves

    In water distribution networks (WDNs), the classic pressure control valves (PCVs) are mechanical/hydraulic devices aimed at maintaining the target pressure just downstream or upstream of the PCV pipe, namely pressure reduction or sustaining valves. From a modelling standpoint, the major drawback of such local control is that classic PCVs may require target pressure varying over time with the ...


    By IWA Publishing

  • 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.

  • What are the advantages of ultrasonic wind sensors?

    Whether mechanical, ultrasonic or laser wind measurements: All measuring methods have technical limits. While for mechanical wind sensors the measuring element – cups and vanes – itself predominantly produces a disturbance in the flow field, for ultrasonic anemometers a disturbance can be caused by the sensor holder or housing construction. Only optical methods, e.g. LDA (Laser ...

  • Advantages of Using Flow Meters to Reduce Pressure Drop

    Plant operators rely on plant air pressures to maintain properly working equipment and systems. One of the most common problems affecting processing plants that utilize compressed air systems is the ability to maintain reliable air pressure throughout the distribution system. Insufficient air pressures may be due to undersized distribution piping, but it’s more commonly found that the cause ...


    By FLO-CORP

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