Series pdm flowmeter outputs reed switch output provides a voltage free. Total control systems is a leading iso9001certified manufacturer of piston and rotary positive displacement flow meters located in fort wayne, indiana. Ideal for many flow measurement applications, including many oil flow applications. Oscillatingpiston type f04c non positive displacement phd thesis in project management pdf pumps f04d. Rpm rotary gas meter 04 elster american meter rpm rotary gas meter operating principles the rpm rotary gas meter operates on the positive displacement technology which makes volumetric measurements by displacing finite increments of gas. Nutating disc chamber designs offer the widest effective measurement of flow range. Additional positive displacement flow meter manufacturers. Specification sheet industrial positive displacement meter. Our emerson mining advisor applications will be on display.
A typical positive displacement flowmeter comprises a chamber that obstructs the flow. Positive displacement flow meters measure the volumetric flow rate of a moving fluid or gas by way of precisionfitted gears or rotors containing cavities through which precisely known volumes of fluid pass. This is accomplished through the known volume that is displaced for each. This index is not part of any standard, but is presented to help the user in considering factors beyond the standards. The differential pressure flow measuring principle orificenozzleventuri duration. Therefore, most positive displacement flowmeters have a maximum pressure drop specification that is intended to limit positive displacement flowmeter bearing wear to reasonable levels. It is designed to measure clean potable water only in residential, commercial and industrial settings.
Fundamentals and principles of diaphragm meters james thomson sensus metering systems 805 liberty blvd. Every cycle of the meter s mechanism displaces a precisely defined positive quantity of fluid, so that a count of the number of mechanism cycles yields a precise quantity for the total fluid volume passed through the flow meter. You can measure flow through a variety of different devices such as coriolis, differential pressure, vortex, magnetic, ultrasonic, turbine and positive displacement meters. Thoroughly flush the service line upstream of the meter to remove dirt and debris. T10 positive displacement meter evans supply limited. The displacement of the fluid is translated via a magnetic or hall effect pickup into a pulse output that is proportional to the flow. They register the volume by counting the number of times a chamber of a known volume is filled and emptied. Displacement volumetric meter is the same topic under a different incorrectly capitalized title. Rotating positive displacement 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 between sealing faces is kept to a minimum. What is positive displacement pumps types and advantages positive displacement pumps positive displacement pumps, in contrast, have very little slips, are selfpriming and pump against very high pressures, but their volumetric capacity is low. The blancett positive displacement flow meter provides high measurement accuracy for fluids over a wide viscosity range. 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. An incorrect flow total will be displayed in the meter if the reverse flow is greater than one meter revolution. The positive displacement occurs within a cavity formed between the meter s internal housing and its.
Positive displacement pd flow meters for viscous fluids. Combining the accuracy of positive displacement meters with the reliability and economy of nutating disc technology, the simple but efficient design of this meter makes it an ideal solution for. The satam positive displacement meter pd meter is a system with freelymoving blades used to measure petroleum products such as fuels, biofuels and refined liquid hydrocarbons and non corrosive chemicals. Distributor of positive displacement meters including flowmeters made from lead free bronze, aluminum and stainless steel. Positive displacement flow meter flow meter directory. The oval gear meters are positive displacement flowmeters where the passage of liquid causes two oval gears to rotate within a precision measuring chamber and with each rotation a fixed volume of liquid passes through the meter. A positive displacement flow meter is a cyclic mechanism built to pass a fixed volume of fluid through with every cycle. Positive displacement flowmeter technology flowmeters. The unique design of the ftb3000 oval gear meter incorporates two smooth toothless oval gears positioned 90 degrees out of phase. Flow measurement is the process of measuring fluid in your plant or industry. Positive displacement pumps have a very close clearance between rotating and stationary parts and hence are selfpriming.
To protect the meter spud threads, store the meter with the thread protectors in place. Aw gear meters microflow positive displacement flow meter. By directing the fluid to mechanically displace components in the meter in order to measure its flow as discreet parcel volumes. Only fluid that is able to bypass this seal does not get. From road tanker applications, metering home heating oils, diesel, aviation fuel, lubricants and lpg, to process, plant and bulk storage operations for volumetric measurement. Rg3s patented positive displacement meters are oscillating piston meters. The thing that sets positive displacement flow meters apart is that it utilizes mechanical components that are shifted by the flow of liquid in order to gauge the rate of the flow of that fluid. 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. The smaller these clearances are, relates to how high the accuracy will be. Liquid controls lc positive displacement flow meters have a reputation worldwide for exceptional accuracy, reliability, and longevity in a broad range of applications. Operating the flowmeter above the pressure drop limits of the flowmeter can result in premature bearing wear and catastrophic flowmeter failure. This technology works by directing the fluid to mechanically displace components within the meter to measure its flow as discreet parcel volumes. Positive displacement type flow meter applications of positive displacement meters.
The meter may be installed in horizontal or inclined lines, with register facing upward. About positive displacement flow meters instrumart. The meter may be installed in horizontal or inclined lines. Metering through positive displacement has been an accurate and reliable technology used in many parts of the world for decades. Return to cold water meters positive displacement recordall disc series meters from badger meter are an accurate, costeffective solution for your residential metering needs. Positive displacement flow meter flow meter manufacturers. In addition neptune provides a lifetime guarantee on the lead free bronze main case. Arrows on the side of the meter and above the outlet spud indicate the direction of flow. Positive displacement flow meters are designed for low flow and high accuracy over a wide range of fluid viscosity generally used for thicker liquids they can be used in very viscous, dark colored fluids meter requires fluid to mechanically displace components in the meter. Positive displacement flowmeters operational manual model. They are used in high viscous, dirty fluid which does not flow through the straight conduit. Dubois, pennsylvania 15801 introduction a diaphragm meter is a positive displacement instrument which is used to measure the volume of gas that passes through it. Flow meter resources flow meter application advisor.
Troubleshooting tips for positive displacement flow meters. Positive displacement flow meters sparlings inventory of oval positive displacement meters are designed for flow measurement of very small flow rates in applications requiring high accuracy. Positive displacement meter installation instructions the installation instructions detailed below are consistent with recommendations by the american water works association in awwa manual m6, water meters selection, installation, testing, and maintenance. Positive displacement flowmeters for high viscosity fluids. Series pdm flowmeter types of positive displacement meters nutating disc rotating valve oscillating piston oval gear rotating lobe birotor rotating impeller.
These robust positive displacement fluid flow measuring devices are available in a wide variety of configurations and options including digital displays. Positive displacement pd meters utilize a nutating disc measuring chamber and a floating chamber design that is unaffected by meter position or inline piping stresses. Install the meter with direction of flow as indicated by the arrow cast in the meter case. The mini meter is a positive displacement flow meter best suited for measuring lubrication oils for various kinds of machines and instruments in the management of fuel oil consumption with small oil burner. Positive displacement water meters from zenner performance utilize a magnetically driven, positive displacement, oscillating piston design. Positive displacement flowmeters, also know as pd meters, measure volumes of fluid flowing through by counting repeatedly the filling and discharging of known fixed volumes. Features vary depending upon models and include magnetic drives, measuring chambers, sliding vanes, fluid compatibilities, high tolerance to changing viscosity, rugged outer bodies and industrialgrade construction.
With only 2 moving parts, the positive displacement meter offers trouble free operation and long service life. A key distinction of positive displacement flow meters is that they offer direct measurement of the volumetric flow rate. Badger recordall cold water meters meter, valve and control. The aforementioned are few of the common problems associated with flow meters. A basic analogy would be holding a bucket below a tap, filling it to a set level. Flush the inside of the meter and try to work the gear free by displacing debris if you find damaged parts in the meter, return the. The reasons companies standardize on our meters are simple. There are many types of internals such as two or three gear oval gear, nutating disc, rotary piston and sliding vane. Liquid controls positive displacement flow meters alpeco. You can try these troubleshooting tips to recoup the operational performance of positive displacement flow meters. Download fpd1001 thru fpd1003,fpd1102,fpd1103,fpd1201 thru fpd1203 low flow positive displacement flowmeters download fpda and fpdtx 420ma transmitter download fpddbat battery powered display local and remote models. Hydraulic testing, chemical injection or chemical dosing, pharmaceutical application and similar precision applications. A positive displacement flow meter measures flow by displacing a precise and known volume for each revolution of their internal parts. Positive displacement meter is a type of flow meter that requires fluid to mechanically displace components in the meter in order for flow measurement.
The meter must be installed in a clean pipeline, free from any foreign materials. Designed with the future in mind for use in mobile and. The meter is bidirectional and it has an extremely large. Positive displacement flow meters are devices that are used to measure the flow rate of a substance, most commonly a fluid. Positive displacement flow meters are frequently specified as they offer high accuracy and repeatability. Each company has detailed profile information, locations, phone number, website links, product videos and. Positive displacement flow measurement technology accurately measures the volume of liquid or gas passing through the flow meter. Positive displacement flowmeters for high viscosity fluids well suited for viscous fluids which are difficult to meter with a turbine type flowmeter. Inside the chamber, a rotatingreciprocating mechanical unit is placed to create fixedvolume discrete. Positive displacement machines pdf combinations of positive displacement and non positive displacement pumps are. Positive displacement flow meter positivedisplaceme ntflowmeter. The meter may be installed in horizontal, vertical or inclined lines. Positive displacement flow meter with flow range from 0.
Positive displacement flow measurement technology accurately measures the volume of liquid passing through the flow meter. Positive displacement flow meters for water and solventbased paints and coatings starting at. Its simple design with only two pairs of blades and one moving rotor makes it. Install the meter with direction of flow as indicated by the arrow molded in the meter case. Applications include lubricants, fuels, chemicals and solvents, oils and greases. Positive displacement flow meter description our positive displacement flow meter is a kind of oval gear flow meter,along to positive displacement flow meter. Applications, advantages and disadvantages of positive. A quick and easy to use request for quote form is provided for you to contact these positive displacement flow meter manufacturers and suppliers. The accustream meter applies proven positive displacement measuring technology and is the most recent lead free water meter from sensus, manufactured using composite materials. That article has nothing unique in it and ought to be a redirect to this title. What is positive displacement pumps types and advantages. Positive displacement flow meters sparling instruments, llc.
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