Easy replacement with insertion magmeters is possible when high failure rates are unacceptable and are often sold by the same vendor. Applications in dirty fluids are not recommended. In some applications, sensor replacement may need to be performed routinely and increase maintenance costs. Be careful when measuring fluids that are non-lubricating because bearing wear can cause the flowmeter become inaccurate and fail. Paddlewheel flowmeters should not be operated at high velocity because premature bearing wear and/or damage can occur. Make sure to operate these flowmeters above approximately 5 percent of maximum flow. Paddlewheel flowmeters are less accurate at low flow rates due to rotor/bearing drag that slows the rotor. Application Cautions for Paddlewheel Flowmeters Miscellaneous applications are found in the food and beverage, and chemical industries. Water applications include distribution systems. Applications for paddlewheel flowmeters are found in the water and chemical industries. There are temperature and pressure limitations of this insertion system but it is very versatile. All sensors are inserted into the same pipe Ts and connect into one controller/transmitter. The most common use is in a system where the fluid is like water and other variables such as pH/ORP, conductivity, pressure, temperature and level are monitored. These flowmeters are measuring flow at the edge of the flow profile and thus are affected by viscosity changes. High accuracy is attainable if carefully installed. Paddlewheel flowmeters measure the velocity of liquids in pipes, such as chemicals, water and liquids. The transmitter processes the pulse signal to determine the flow of the fluid. When the fluid moves faster, more pulses are generated. Paddle movement is often detected magnetically, with each paddle or embedded piece of metal generating a pulse. Shaft rotation can be sensed mechanically or by detecting the movement of the paddles. When the fluid moves faster, the paddlewheel spins proportionally faster. Paddles on the rotor are inserted into the flow to transform energy from the flow stream into rotational energy. Paddlewheel flowmeters use the mechanical energy of the fluid to rotate a paddlewheel (just like a riverboat) in the flow stream. Please remember that Universal makes very specific products for utility water used in manufacturing, circulating lubrication, and industrial gas found on this site on the UFM products tab at the top of the page. Now that you know a possible technology to use, contact us to discuss your application. Variable Area (Float Style) for Clean Water.GF Signet 515 Rotor-X paddle wheel flow sensors are also offered in configurations for wet-tap installation requirements. These custom fittings, which include tees, saddles, and weldolets, set the sensor to the proper insertion depth into the process flow. GF Signet 515 Rotor-X paddle wheel flow sensors can be installed in up to DN900 (36 in.) pipes using GF Signet's comprehensive line of custom fittings. The many material choices include PP, PVDF, and Tefzel make this model highly versatile and chemically compatible to many liquid process solutions. The GF Signet 515 Rotor-X paddle wheel flow sensors are offered in a variety of materials for a wide range of pipe sizes and insertion configurations. The GF Signet 515 Rotor-X paddle wheel flow sensors have a wide dynamic flow range of 0.3 to 6m/s (1 to 20 ft/s), which allows the sensor to measure liquid flow rates in full pipes and can be used in low pressure systems. The output signal of the GF Signet 515 Rotor-X paddle wheel flow sensor is a sinusoidal frequency capable of driving a self-powered flow monitor such as the GF Signet 8150 Flow Totalizer. Simple to install with time-honored reliable performance, the GF Signet 515 Rotor-X paddle wheel flow sensors are highly repeatable and rugged sensors that offer exceptional value with little or no maintenance.
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