Dynasonics doppler ultrasonic flow meters are designed to measure the flow of liquids that contain sound reflectors suspended solids or gas bubbles. There are three main types of ultrasonic flow meters. Global water fm500 ultrasonic flow meter xylem analytics. Ultrasonic flowmeters are ideal for wastewater applications or any. For process and utility applications, energy and custody transfer ct measurements. Eesiflo doppler flow meters have been installed in many locations for more than a decade. The ultrasonic doppler flow meter would be a good candidate since it itself. Doppler ultrasonic flow meters are regarded as an old technology offering much poorer accuracies than transit time flow meters. A rangegated pulsed ultrasonic doppler flowmeter iowa state. 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. This section summarizes the principles and features of. It is a handheld measurement system which is both easy to install and use.
In some instances, such as nonsaturated concrete pressure pipe, ultrasonic energy will not readily pass. Design specification for wireless ultrasonic waterflow. Introduction sound generated above the human hearing range typically 20 20 khz is called ultrasound. Instruments direct ultrasonic flow meter technology for commissioning, balancing, and hvac duration. Using ultrasonic transducers, the flow meter can measure the average velocity. Measuring of speed flow by using ultrasonic transittime sensor. The compuflow doppler ultrasonic flow meter measures flow velocity by sensing signals from reflective materials within a liquid flowing in the pipe. Unless you know the answer, your only solution is to carry a clamp on. The qstar ultrasonic flow meter uses the proven and highly precise ultrasonic transit time difference.
The fd610 series ultrasonic flow meter features advanced transphase measuring technology, providing accurate and reliable flow velocity. Use of conventional transducers in ultrasonic flow meter. Ultrasonic mass flowmeter for army aircraft engine. 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. Ultrasonic flow meter lefm240c the lefm 240c ultrasonic meter is a compact, high performance unit designed specifically for custody transfer or fiscal metering applications. Dynasonic series ufx portable doppler flowmeter datasheet. The dfx ultrasonic doppler flow meter measures flows of liquids containing suspended particles or aerated liquids. It is ideal for process measurement in applications where users previously had not. An ultrasonic flow meter is a type of flow meter that measures the velocity of a fluid with ultrasound to calculate volume flow. Accuracy and precision of uncalibrated doppler flow meters in various water quality environments including pristine spring flows and typical high turbidity irrigation flows.
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. Indirect mass flow meters combine density measurements with volumetric flow. The global water fm500 ultrasonic flow meters provide accurate. If you need a flow meter but dont want to cut or invade your pipes, the ultrasonic flow meter is for you. 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. Dxn hybrid flow and energy meter kit our most versatile flow meter, the dxn measures flow with transit time and doppler technology. Fdt21 ultrasonic flow meter is designed to measure the fluid velocity of liquid in a fullclosed pipe. An ultrasonic flow meter uses sound waves above human hearing levels to measure flow rates in liquids and gases.
The ultrasonic flow meter operates on the principle. Comprehensive portfolio for gases, liquids and steam. Pdf ultrasonicbased sensor fusion approach to measure flow. Ultrasonic flow meter usually uses clampon type flow transducers. Or download this pdf file from the compuflow website. Utilizing ultrasonic transducers, the flow meter can gauge the normal speed along the way of a produced light emission, by averaging the distinction in measured travel time between the beats of ultrasound. The transducers are a noncontacting, clampon type, which will provide benefits of non. Find how a ultrasonic flow meter works on this link. Get rental information on ultrasonic flow meter from kennards hire. High temperature and cryogenic versions, variants for high. Doppler flow meters are used for slurries, liquids with bubbles, or gases with soundreflecting particles. Micronics flow meters design, manufacture and market clampon ultrasonic liquid flow measurement meters as both portable instruments and fixed applications.
Pdf flow rate measurement in pipes is essential for many applications. Ultrasonic characterization of materials and multiphase flows. The world market for ultrasonic flowmeters, 5 edition. Ultrasonic flow meter is a noncontact flow measurement device designed to measure the velocity of liquid within a closed conduit. Determining if your processinstallation is right for a doppler flow meter. Global water fm500 ultrasonic flow meter ultrasonic clampon flow meters that use transit time and doppler methods to measure flow. There are two types of ultrasonic flow meters doppler and transit time. Tds100h handheld ultrasonic flow meter is a batterypowered ultrasonic flow meter with the capability of a fullsize flow meter. The reflecting material must travel at the same velocity as the fluid for good accuracy. Note the abovementioned flow rates have been calculated for the sus sch. The meter s clampon design allows quick and lowcost installation, and eliminates. The sruf100h ultrasonic flow meter is designed to measure the fluid velocity of liquid within a closed conduit. The flow cross section a is determined by continuously.
Ultrasonic flow meter coriolis flowmeter, air and gas. Sewer system flow meter and totalizer for open channel flows. An ultrasonic doppler flow meter is a volumetric flow meter that is ideal for aerated liquids such as wastewater or slurries. Transit time and doppler flowmeters one important issue is the contrast in growth between transit time and doppler. Development began on a new type of ultrasonic mass flownieter for fuel flow in gas turbine engines. A presentation on ultrasonic flowmeter authorstream. Factors such as the type of output analog or digital, size of the. Components of the compuflow doppler ultrasonic flow meter system. It was suggested to use the transit time ultrasonic flow meter with beam and flow axes matched instead of conventional. Portable ultrasonic flow meter and permanent ultrasonic flow meter,low cost and high performance. Ultrasonic flow meters are sensors with electrical transmission output. Even ultrasonic flowmeters employing the doppler method which works. There are several ultrasonic flow measurement technologies available in the market which.
The simpler type emits a continuous ultrasonic signal of constant frequency, the. 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. These meters include clampon, noninvasive flow meters that require a good acoustical path between the outside of the pipe and the liquid inside. Ultrasonic doppler flow meter advantages and disadvantages. An emitter sends ultrasonic waves at frequency f1 approx. A comparison between doppler and transit time ultrasonic flow. Versaflow clampon ultrasonic flow meters can be installed without having to stop the process or cut into the pipe line. Ultrasonic flow meter price, india flow meter manufacturers.
The doppler flow meters performance are highly dependent on physical properties of the fluid, such as the sonic conductivity, particle density, and flow profile. Compuflow doppler ultrasonic flow meter instrumart. In order to achieve significant accuracy in measuring the. In the doppler flow meter, an ultrasonic transducer is used to generate a. Transit time ultrasonic flow meters are ideal for clean liquid applications such as water and oil. The large easytoread color display and intuitive touch screen interface. An ultrasonic flowmeter is one of the types of velocity type flowmeters.
A doppler ultrasonic flow meter uses a transducer to emit an ultrasonic beam into the stream flowing through the pipe. The doppler flow meter features clampon transducers and a rugged nema 4x enclosure, and is a longterm, maintenancefree solution for your highsolid flow measurement. The dfx flow meter operates by transmitting ultrasonic waves into the flow stream and measuring the frequency shift of the reflected wave. An ultrasonic flowmeter nonintrusive doppler flow meters is a volumetric flow meter which requires particulates or bubbles in the flow.
Ultrasonic flow meters that use transit time and doppler methods to measure flow. An acousticcoupling compound is used on the surface of the pipe and the sensors are simply held in place to take a measurement or, for a more permanent installation, they are strapped around the pipe. They can also be adapted for use in open channels by integrating with level transmitters. Ultrasonic is designed to measure the fluid velocity of liquid within a closed conduit. Various types of flow meters and flow sensors are available. Miniature, high efficiency transducers for use in ultrasonic flow. The question most ultrasonic flow meter operators ask themselves is should i be using a doppler or transittime flowmeter. The world market for ultrasonic flowmeters, 5th edition flow research, inc. It is also known as nonintrusive doppler flow meter.
Doppler measurement ultrasonic flow meters doppler flow meters will monitor the flow of liquids in awkward applications, including. Compuflow c6 portable doppler ultrasonic flow meter. Electric 2005 introduced a dualsensor doppler flowmeter pulse. Material investigations and simulation tools towards a. Fundamentals of ultrasonic flow meters keven conrad and larry lynnworth panametrics, inc. Limitations with doppler effect ultrasonic flow meters. When these two components combine at the receiving transducer, amplitude modulation and. This instrument is easy to use and report an accurate liquid flow rate. These applications are illustrated based on operating experience with the instromet 3 path and 5path. Optimize the present ultrasonic mass flowmeter to combine vc. Principle doppler flow meters operate similarly to the radar speed traps used on the road. Ultrasonic flow meter flow knowledge keyence america. Ultrasonic meters installed in the flow like individual meters or similar may influence on pressure loss like valves or similar.