The large easytoread color display and intuitive touch screen interface. For the flow meter to operate, there must be solid particles or air bubbles in the. Doppler ultrasonic flow meters are regarded as an old technology offering much poorer accuracies than transit time flow meters. Ultrasonic flow meter coriolis flowmeter, air and gas. Ultrasonics flowmeters will generally not work with distilled water or drinking water. Utilizing advanced dsp technology, the micronics portaflow pf330 ultrasonic liquid flow meter is the latest portable flow measurement and recording system to be added to the micronics range of. Ultrasonic flow meters were first introduced in japan, in 1963, by tokyo keiki inc. These problems make doppler flowmeters unsuitable for highly accurate measurement applications. Ultrasonic clampon gas flow meters and liquid flowmeters. The fd400 series ultrasonic doppler flowmeters measure the flow of liquids that contain sound reflectors, suspended solids, or gas bubbles larger than 100 microns. The developed method allows the ultrasonic flow meter to reach a. Combined with temperature monitoring the transducer can be used in a system for heat metering.
What is nonintrusive ultrasonic flow meter technology. An ultrasonic flow meter uses sound waves above human hearing levels to measure flow rates in liquids and gases. The basis of good flow meter selection is a clear understanding of the requirements of the particular application. Portable ultrasonic flow meter and permanent ultrasonic flow meter,low cost and high performance. There are several ultrasonic flow measurement technologies available in the market which.
Compuflow c6 portable doppler ultrasonic flow meter. Tds100h handheld ultrasonic flow meter is a batterypowered ultrasonic flow meter with the capability of a fullsize flow meter. Press the to store your selection then the to the next menu item and to enter. Data may be captured to file, printed out or imported into a spread sheet for. The liquid flowing within the pipe must contain 100 ppm of useful sonic suspended reflectors dissolved solids do not generate reflections and are not relevant. Most ultrasonic flow meters use one of the two main principles. Flow knowledge is a website that contains a wealth of information on flow meters and flow sensors. They can also be adapted for use in open channels by integrating with level transmitters. Micronics flow meters design, manufacture and market clampon ultrasonic liquid flow measurement meters as both portable instruments and fixed applications.
Or download this pdf file from the compuflow website. These transducers are intended to transmit and receive ultrasonic waves across a liquid channel for time of flight or doppler shift flow measurement of liquids. Fundamental principles of clampon ultrasonic flow meters overview of selection, installation, operation and maintenance of clampon meters. As you may know, flowmeters are commonly separated into two different categories, one for flow meters which measure the rate of flow by volume and the other which. Doppler measurement, on the other hand, is used when gas bubbles or suspended solids are present in the fluid. Jul 15, 2009 the electromagnetic flow measuring principle. Doppler flow meters are used for slurries, liquids with bubbles, or gases with soundreflecting particles. Note the abovementioned flow rates have been calculated for the sus sch.
A doppler ultrasonic flow meter uses a transducer to emit an ultrasonic beam into the stream flowing through the pipe. The flow rate range may differ slightly, depending on the piping standard. Ultrasonic flow meter flow knowledge keyence america. Portable doppler ultrasonic flow meters fd6 and fd614. For the flow meter to operate, there must be solid particles or air bubbles in the stream to reflect the ultrasonic beam. Doppler units can measure particle sizes as small as 10 microns.
Features of the compuorz doppler ultrasonic flow meter the doppler flow meter features. Teksco compuflow ultrasonic flow meter ultrasonic flow. The teksco compuflow is an ultrasonic doppler flow meter that combines ease of use with accuracy and simple setup. As you may know, flowmeters are commonly separated into two different categories, one for flow meters which measure the rate of flow by volume and the other which measures the rate of flow by the mass of the fluid. The compuflow doppler ultrasonic flow meter measures flow velocity by sensing signals from reflective materials within a liquid flowing in the pipe. Micronics ultrasonic flow meters are widely used in the energy management and retrofit building services markets around the world to help reduce energy consumption and monitor water use. The meter s clampon design allows quick and lowcost installation, and eliminates worries of fluid compatibility and pressure head loss. Panametrics portable pt900 ultrasonic flow meter the panametrics pt900 is the latest generation of portable ultrasonic clamp on flowmeter from panametrics, it is designed to withstand rugged use in industrial applications. Pdf ultrasonic technology is evolving rapidly due to the significant. The speed of sound of the reflector must vary by greater than 10% from that of the liquid. This section summarizes the principles and features of ultrasonic flow meters. The doppler flow meter features clampon transducers and a rugged nema 4x enclosure, and is a longterm, maintenancefree solution for your highsolid flow measurement. Upward flowing pipes running at low velocities may not carry heaver reflectors at the same velocity as the carrying liquid leading to inaccurate flow measurements. The suspended particles must reflect ultrasonic energy.
Fm500 ultrasonic flow meters manual manual global water. The global water fm500 ultrasonic flow meters provide accurate and trouble free flow metering for a wide range full pipe applications including. The dfx flow meter operates by transmitting ultrasonic waves into the flow stream and measuring the frequency shift of the reflected wave. Utilizing advanced dsp technology, the micronics portaflow pf330 ultrasonic liquid flow meter is the latest portable flow measurement and recording system to be added to the micronics range of equipment. Connect the usb output directly to your pc or laptop to download data logger files. Depending on their relative motion you will see a doppler shift in frequency in the transceiver signal. The fd610 series ultrasonic flow meter features advanced transphase measuring technology, providing accurate and reliable flow velocity. Ultrasonic flow meter introduction omega engineering. The meter configuration is read from the meter and stored as part of the. Fundamentals of ultrasonic flow meters keven conrad and larry lynnworth panametrics, inc. Because the sensor of the ufm50 is mounted on the exterior of the pipe or tube, it can not be affected by the medium inside. Ceesi measurement services garner, iowa this paper is aimed at ultrasonic natural gas meters that use transit time across the gas pipe as the measurement variable. Unless you know the answer, your only solution is to carry a clamp on doppler flow meter in one hand and a portable transittime flow meter in the other, and hope for the best when you arrive at the job site.
The fd610 series ultrasonic flow meter features advanced transphase measuring technology, providing accurate and reliable flow velocity assessments in closed piping systems. Get rental information on ultrasonic flow meter from kennards hire. Global water fm500 ultrasonic flow meter ultrasonic clampon flow meters that use transit time and doppler methods to measure flow. Ultrasonic flow meters are sensors with electrical transmission output. Again, just ask a more specific question and i will be happy to help. Utilizing the meter manufacturers software and one of the data signal lines, communication is established with the meter. The pf330 can display instantaneous fluid flow rates or velocity, together with totalised values. Ultrasonic flowmeters are ideal for wastewater applications or any dirty liquid which is conductive or water based.
Using ultrasonic transducers, the flow meter can measure the average velocity along the path of an emitted beam of ultrasound, by averaging the difference in measured transit time between the pulses of ultrasound propagating into and against the direction of the flow. Flow meter setup for time of flight flow metering measuring the flow of clean liquid can be achieved by mounting transducers at an angle, by reflective blocks, or by channelling the flow stream between the sensors. Pdf ultrasonic blood flow sensing using doppler velocimetry. Ultrasonic doppler type flow meter ultrasonic flow meters. The flow cross section a is determined by continuously. If the distance between the two transducers l is known, then by driving transducer 1 and monitoring the time it. Ultrasonic flowmeters are ideal for wastewater applications or any. There are options of clamp on flowmeters for the ideal use of clean liquids containing no air bubbles such as. These are high frequency sensors that penetrate through the pipe wall and the liquid to determine the fluid velocity, flow rate and total.
Flow meter setup for time of flight flow metering measuring the flow of clean liquid can be achieved by mounting transducers at an angle, by reflective blocks, or by channelling the flow stream between the. Available in fixed or portable models, the compuflow uses clampon or insertion sensors and is best suited for flow measurement of high particulate liquids in pipes or open channels. Block diagram of transit time ultrasonic flowmeter. Ultrasonic flow metering with highly accurate jitter.
An ultrasonic flowmeter nonintrusive doppler flow meters is a volumetric flow meter which requires particulates or bubbles in the flow. Dxn hybrid flow and energy meter kit our most versatile flow meter, the dxn measures flow with transit time and doppler technology. This section summarizes the principles and features of. Please download pdf file full product specifications. Global water fm500 ultrasonic flow meter xylem analytics. With clampon technology, these ultrasonic meters reside outside the pipe and bring you flow measurement with many benefits including reduced installation costs, uninterrupted production, installation flexibility across a wide range of pipe sizes. It is carefully designed for portability and ease of use. There are two technologies to choose from based on the fluid propertiestransit time and doppler. We specialise in measuring the flow of a liquid in a pipe by using clamp on strap on sensors.
This ultrasonic doppler flowmeter is r ecommended for full pipes and any fluid that contains solids or bubbles, like wastewater, chemicals, acids, slurries, abrasives and viscous liquids. The doppler ultrasonic flowmeter is preferable when there are. Using ultrasonic transducers, the flow meter can measure the average velocity. Unless you know the answer, your only solution is to carry a clamp on. An ultrasonic flow meter is a type of flow meter that measures the velocity of a fluid with ultrasound to calculate volume flow. The question most ultrasonic flow meter operators ask themselves is should i be using a doppler or transittime flowmeter. Average flow velocity and flow cross section are required to determine the flow q.
The hybrid ultrasonic flow meter can measure fluid flow in virtually any fluid in which sound. Introduces flow meter types and principles explains ultrasonic flow meters. Measurements from external devices such as rtds and pressure transmitters can be logged along with flow data. Design specification for wireless ultrasonic waterflow. Comprehensive flow control knowledge located in one complete resource further your understanding of flow control, from understanding different technologies to learning how to properly select a flow monitoring device for any scenario. This noninvasive, noncontact flow meter provides instantaneous flow rate and accumulated flow and provides a 420 ma output as well as pulse outputs. Particles in the fluid will reflect some of the signal. Panametrics portable pt900 ultrasonic flow meter the panametrics pt900. Various types of flow meters and flow sensors are available.
Flow mode displays the flow rate in engineering units e. Ultrasonic flow meter lefm240c the lefm 240c ultrasonic meter is a compact, high performance unit designed specifically for custody transfer or fiscal metering applications. Control electronics model cps460 ultrasonic closed pipe doppler. In a doppler flow meter, the transducer projects an ultrasonic beam at a frequency of. Water coupled transducers for ultrasonic flow metering. The dynasonics dtfxl series ultrasonic flow meter measures water flow in a wide variety of pipe sizes and pipe materials, using clampon sensors that attach to the outside of the pipe. Our permanent and portable clampon flow meters are the ideal measuring systems even for the most challenging applications. Find how a ultrasonic flow meter works on this link. Portable doppler ultrasonic flow meters omega engineering. Unlike other acoustic flow meters, doppler meters are affected by changes in the liquids sonic velocity.
These sophisticated instruments automatically adjust filtering and gain settings to produce reliable readings in a wide range of liquid and reflector conditions. The other main principle is that you can use the doppler effect. Typical meters using this technology will use 1, 2 or 4 of these transducers. As a result, the meter is also sensitive to changes in density and temperature. Micronics flow meters ultrasonic clampon, and fixed flow. The global water fm500 ultrasonic flow meters provide accurate. Ultrasonic flow metering technology today is exploding as a flow measurement solution. Components of the compuflow doppler ultrasonic flow meter system. Design specification for wireless ultrasonic waterflow executive summary the wireless ultrasonic waterflow monitoring system is a system equipped with the capability to measure water flow rate and detect water leakage. There are several ultrasonic flow measurement technologies available in the market which include transit time flowmeters and doppler meters but the most popular technology by far is the transit time method. The meters are easy to operate and are ideal for any flow measurement situation.
Dynasonics ultrasonic meters measure flow rate by propagating ultrasound waves into liquidfilled pipes and measuring the reflections. Doppler ultrasonic flow meter models doppler type flow meters will monitor the flow of liquids in difficult applications, including. The reflecting material must travel at the same velocity as the fluid for good accuracy. Fundamental principles of clampon ultrasonic flow meters.
The dfx ultrasonic doppler flow meter measures flows of liquids containing suspended particles or aerated liquids. These are high frequency sensors that penetrate through. The large easytoread color display and intuitive touch screen interface makes set up quick and easy. Compuflow doppler ultrasonic flow meter instrumart. Doppler ultrasonic flow meter series dfx manual badger meter. If velocity is present, a doppler shift is observed and the flow is calculated. Available in fixed or portable models, the compuflow uses clampon or insertion.