Like all floco meters, these models measure the flow by separating it into segments of known volume and then counting the segments. Gear flow meters are positive displacement meters, similar in design to a gear pump. Applications include lubricants, fuels, chemicals and solvents, oils and greases. In this article how positive displacement flow meters measure the volume of fluid is explained. Smartpd includes a digital lcd display for immediate flow. Steam clean the meter bypass or remove the meter if necessary. Rotating positive displacement flow meters one of the main benefits of using a pd flow meter is the high level of accuracy that they offer, the high precision of internal components means that clearances. Blow down the meter with compressed air or gas because it may overspeed and damage the meter. Reference owners manual for complete accuracy and uncertainty. Smcs almpd microflowmeter is a nutating disk positive displacement meter designed for precise measurement of ultralow flow rates. Og4 oval gear flow meters swept volume flow meters.
The displacement of the fluid is translated via a magnetic or hall effect pickup into a pulse output that is proportional to the flow. Mx series features latest meter technology modular design allows for design flexibility solid billet construction programmable digital display w varied output options mx series data mx06 14 suitable for flow range 0. The compact rugged og4 oval gear flowmeter a swept volume flow measurement device, is designed to give high performance with a low cost of ownership. Positive displacement flowmeters operational manual for models model 2, p002, 214, 215 and 216. Positive displacement flow meters are the only flow measuring technology to directly measure the volume of fluid that passes though the flow meter. Macnaughts positive displacement flow meters are suitable for a wide range of industrial applications including fuel and oil distribution, corrosive chemical. Flow measurement there are three types of rotary positivedisplacement meters in use today for gas. Achieve precision flow measurement and process control. Positive displacement flowmeters achieve this by repeatedly entrapping fluid in order to measure its flow. The positive displacement nutating disc flow meter uses a precisely machined chamber for high accuracy flow measurement. Oval gear positive displacement meter alovpd the smartmeasurement alovpd oval gear flowmeter features two precisely machined rotating elliptical oval gears which rotate and mesh within the meter s interior housing in order to form a measuring chamber of known volume which may be used to accurately determine volumetric flow.
One primary feature is the ability to maintain consistent accuracy despite changing viscosity conditions. The lowcost almpd offers superior value by providing a package that is capable of measuring very low flow rates with less susceptibility to wear versus other positive displacement. Positive displacement nutating disc meter niagara meters. Positive displacement pd flow meters measure the volumetric flow rate of a moving fluid or gas by dividing the media into fixed, metered. Lessons about positive displacement flow meters omega. Rz sanitary positive displacement flowmeter the rz series positive displacement flowmeter is the solution to applications requiring precision flow measurement from a sanitary design. Positive displacement meter an overview sciencedirect.
Flow direction is marked with an arrow on the flow meter. The unique design of the ftb3000 oval gear meter incorporates two smooth toothless oval gears positioned 90 degrees out of phase. Positive displacement flow meter what it is and how does. Og3 oval gear positive displacement flow meters the compact rugged og3 oval gear positive displacement flowmeter is designed to give high performance with a low cost of ownership.
Master meter s design engineer responsible for crafting our mmpd oscillating piston meter is a lifetime member of the american water works association, and the recipient of their coveted george anderson award for his leadership on the awwa standards committee for water meters. Location its best to install the flow meter upstream from control valves and fluid regulators, if possible. Positive displacement type flow meter applications of positive displacement meters. With only 2 moving parts, the positive displacement meter offers trouble free operation and long service life. Smith pd meter displacement meters for liquid measurement birotor meter rotating paddle meter oval gear meter figure 1 pd meter measuring elements introduction the purpose of this paper is to examine the positive displacement pd meter. Presentations ppt, key, pdf logging in or signing up.
Flow measurement is the process of measuring fluid in your plant or industry. Positive displacement gear flow meters can be installed either a horizontal or. Positive displacement flow meter what it is and how does it work. You may find it useful to fill out the form below and keep it in your files for reference. Positive displacement gear flow meters can be installed either a horizontal or vertical flow up orientation. Lobed impeller sliding vane rotating vane the lobed impeller the lobedimpeller meter described in section 2. Overview positive displacement meters for liquids are among the most widely used volumetric. Hydraulic sealing is accomplished by a stationary boundary layer of liquid, not by the wiping action of mechanical parts. Positive displacement flowmeter technology flowmeters. Og4 pd oval gear flow meters swept volume flow measurement. Orientation positive displacement gear flow meters.
Positive displacement flowmeters operational manual. Series m and ma positive displacement flow meters overview. The models f5001, f5002, and f5003 floco positive displacement meters are designed to measure the flow of a broad range of liquids, including viscous, corrosive, and abrasive substances. The cyclic nature of a positive displacement meter lends itself well to total gas quantity measurement and not just flow rate, as the mechanism may be coupled to a mechanical counter which is read by utility personnel on a monthly basis. A positive displacement meter is a type of flow meter that requires fluid to mechanically displace components in the meter in order for flow measurement. Rotary vane positive displacement meters measure the flow rate by indicating the quantity of liquid flowing through the meter in a given time. Ifc inflow offers positive displacement flow meter. Figure 3 assists in interpreting your process flow rate, which is an important determinant to the accuracy of your meter. Macnaught positive displacement flow meters are available in a range of sizes that are engineered to provide high accuracy across a wide turn down ratio. Positive displacement flowmeter models 814 and 817 installation and maintenance guide read manual prior to installation or use of this product. Positive displacement pd flow meters are the only flow measuring technology to directly measure the volume of fluid that passes though the flow meter. The measuring medium rotates two gears, which are engaged with. See flow meter data sheet for specific filter, including mesh weight and size.
The original liquid controls trirotor meter design consists of a housing. Aw gear meters offers these spur gear positive displacement flow meters. The lc meter consists of a housing in which three synchronized rotors turn with no metaltometal contact. Applications, advantages and disadvantages of positive. Ideal for flow measurement of low and medium viscosity fluids solvents, polyurethanes, oils and other nonabraisive fluids at very low flow rates, as in chemical injection. No straight run pipe is required upstream or downstream of the meter. Positive displacement pd flow meters measure the volumetric flow rate of a moving fluid or gas by dividing the media into fixed, metered volumes finite increments or volumes of the fluid. The smith meter genesis series is the future in positive displacement meter technology. Positive displacement flowmeter technology is the only flow measurement technology that directly measures the volume of the fluid passing through the flowmeter.
Whether your business requires flow measurement for custody transfer or process control, with an lc pd meter. Liquid controls steelcase msseries positive displacement meters are engineered to provide accurate flow measurement and a long, troublefree service life requiring minimal maintenance with few replacement parts. This reliability, coupled with a large turndown range, offers an affordable replacement for older turbine technology. It achieves this by trapping pockets of fluid between rotating components housed within a high precision chamber. A rotary gas flow meter is shown in the following photograph. The fpd2000 series represents a positive displacement meter that is affordable and accurate. Liquid controls is a world renowned supplier of reliable, highaccuracy, positive displacement pd metering systems. Fmc technologies continues to set the standard for custody transfer measurement for today and tomorrow. Positive displacement flowmeters operational manual model. Positive displacement meter is a type of flow meter that requires fluid to mechanically displace components in the meter in order for flow measurement. Smith pd meter displacement meters for liquid measurement.
The rz series positive displacement flowmeter is the solution to applications. The blancett positive displacement flow meter provides high measurement accuracy for fluids over a wide viscosity range. The max 210 series flow meters are positive displacement. Og3 oval gear pd positive displacement swept volume.
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