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. Positive displacement smith meters railyard supply. Positive displacement flowmeters sangat akurat dan memiliki tinggi turndown. Generally, this information is provided by the manufacturer to ensure the accuracy of their products. Positive displacement flow meter indonesia industrial parts. By eliminating the need for highstrength fasteners, flow technologys unique boltless pressure vessel design provides inherent corrosion resistance in a compact, easytomaintain package. Some positive displacement flow meters use pistons, bellows, or expandable bags working on an alternating filldump cycle to measure discrete fluid quantities. Positive displacement flowmeters chemical engineering. Positive displacement flow meter for industrial processes. Pd flow meter dapat digunakan pada fluida yang sangat kental, cairan kotor dan korosif dan pada dasarnya tidak memerlukan alur aau jaringan pipa yang harus lurus untuk pengkondisian flow meter ini banyak digunakan dalam transfer minyak dan cairan cair bensin dan diterapkan pada gas alam rumah tangga dan metering air. Positive displacement meters are widely used on applications where high accuracy and good repeatability are required. Positive displacement meters and accessories product overview.
The max 210 series flow meters are positive displacement piston type. Liquid controls mseries rotary motion positive displacement pd meters offer the ultimate in measurement accuracy for custody transfer of petroleum products, aviation fuels, lpg, and a broad range of industrial liquids. Accuracy is not affected by pulsating flow, and accurate measurement is possible at higher liquid viscosities than with many other flowmeters. Meter genesis series line of pd meters for refined products and biofuels. Positive displacement meters can be obtained in either a single or double case design. The emphasis will be on the factors influencing the design and performance of the.
Figure 3 assists in interpreting your process flow rate, which is an important determinant to the accuracy. The tcs 700 positive displacement rotary flow meter combines excellent accuracy with low pressure drop. Introduction to positive displacement flowmeters pd. Master meters 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. A guide to positive displacement flow meters flowmetrics. Zenner ppd water meters utilize a magnetically driven, positive displacement, oscillating piston design. Positive displacement flowmeters positive displacement flowmeters measure flowrate through the continuous filling and emptying of a chamber of known volume. A positive displacement pump, unlike a centrifugal or rotodynamic pump, will produce the same flow at a given speed rpm no matter the discharge pressure. Positive displacement flow meter for fuels and oils fpd3000 series u aluminum body u fkm seals u temperatures up to 80. Positive displacement flowmeters differ from positive displacement pumps only in that, rather than being driven by motors, they are driven by the fluid flowing through them. Steam clean the meter bypass or remove the meter if necessary. Many positive displacement flow meters are rotary in nature, meaning each shaft revolution represents a certain volume of fluid has passed through the meter. Positive displacement meter an overview sciencedirect topics.
Series pdm flowmeter principle of operation the series pdm flowmeter uses the oscillating piston principle where the passage of liquid causes a piston to oscillate. 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. Gear flow meters are positive displacement meters, similar in design to a gear pump. Positive displacement flow meters are frequently specified as they offer high accuracy and repeatability. Positive displacement meters and accessories product. Applications truck metering refined fuels lpg aviation fuel lube oils agricultural chemicals bulk plantterminal metering crude petroleum products refined petroleum products and lpg industrial chemicalssolvents marine fuelbunker oil hot asphaltasphalt emulsions dispenser. Positive displacement flow meter manufacturers and suppliers. This compact rugged oval gear flowmeter is designed to give high performance with a low cost of ownership. If you have any problems with the meter, refer to the. Positive displacement flowmeters operational manual.
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. Series pdm flowmeter types of positive displacement meters nutating disc rotating valve oscillating piston oval gear rotating lobe birotor rotating impeller series pdm flowmeter. The measuring medium rotates two gears, which are engaged with minimum play. Dec 17, 2018 when to calibrate a positive displacement flow meter. Positive displacement meters are frequently used in oil and water undertakings for. This catalogue is intended to provide general guidance on macnaughts positive displacement flow meters. Various o ring and internal plating options are available to. The smooth oval rotors displace a precise volume of fluid which is passed through the measurement chamber during each revolution. They require no straight runs of pipe for fluid flow stream conditioning though pressure drop. How to calibrate a positive displacement flow meter. Positive displacement flow meters are the types of flowmeters which are suitable for measurement of viscous liquid flows. Positive displacement meters dynamic fluid flow meters can be classified as either direct volumetric meters or inference type meters.
Positive displacement meter an overview sciencedirect. 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. All meters are designed with the highest quality to provide superior performance in custodytransfer measurement of refined fuels, lpg, fertilizers, chemicals, alcohols, and solvents. No straight run pipe is required upstream or downstream of the meter. The ftb3000 series of positive displacement meters use a pair of smooth oval rotors to provide a reliable and highly accurate measurement of flow. 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. Aw gear meters positive displacement gear flow meters are similar in design to the gear pump. Og1 oval gear, pd positive displacement swept volume flow meters. It is designed to measure clean potable water only in residential, commercial and industrial settings. F u npt or bsp threads u din, jis or ansi connection available on 1 and larger sizes the fpd3000 series positive displacement flow meters are affordable and accurate. The main advantage of these types of flow meters is their ability to handle high viscous and corrosive fluid, and they typically do not require filtration prior to processing. The positive displacement meter is a volumetric flow metering device designed for the accurate measurement of petroleum and petrochemical liquids. Ftb3000 series flow meter is suitable for both gravity and pump in line applications.
Og5 pd, oval geared flow meters positive displacement. Positive displacement flow meter indonesia industrial. The oval rotor principle has proven to be a reliable and highly accurate method of measuring flow. Positive displacement meters and accessories flow management. Positive displacement water meters from zenner performance utilize a magnetically driven, positive displacement, oscillating piston design. Do not attempt to install or use your aw gear meters product until you have read the safety. Ask about services, parts, accessories, rebuilt used meters, and advice today. This positive displacement flowmeter with dis play type 8076 is designed for use in highly viscous fluid like glue, honey. Smith meters sd30di, f4s1, g6s1, h8s1 positive displacement petroleum meters for the railroad. The rotating impeller design is illustrated in figure 2. Positive displacement flowmeters achieve this by repeatedly entrapping fluid in order to measure its flow. Series pdm flowmeter outputs reed switch output provides a voltage free contact closure. 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 measuring flow. Pd flow meter dapat digunakan pada fluida yang sangat kental, cairan kotor dan korosif dan pada dasarnya tidak memerlukan alur aau jaringan pipa yang harus lurus untuk pengkondisian.
Total control systems tcs piston and rotary positive. The compact rugged og5 oval geared flow meter is designed to give high performance with a low cost of ownership. Master meters 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. Positive displacement flow meters are very accurate and have high turndown. Rotary piston positive displacement meters and flow. However, in cases where it is obvious the readings are no longer accurate, calibration should be completed at that time instead of waiting for the next. Operating the flowmeter above the pressure drop limits of the flowmeter can result in premature bearing wear and catastrophic flowmeter failure. The smith meter genesis series pd meters unique patent pending integrated electronics with direct pulse output offers longevity and application versatility for economical measurement. Positive displacement flowmeter technology is the only flow measurement technology that directly measures the volume of the fluid passing through the flowmeter. Zenner displacement type magnetic drive cold water meters. Liquid controls proudly manufactures the averyhardoll and lc brand meters and is the leading manufacturer of positive displacement lowmeters and fuel data management systems in the world.
A positive displacement pd meter figure 1 directly measures volumetric flow by continuously separating isolating the flow stream into discrete volumetric segments. 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 metersselection, installation, testing, and maintenance. Return to cold water meters positive displacement recordall disc series meters from badger meter are an accurate, costeffective solution for your residential metering needs. The smith meter genesis series is the future in positive displacement meter technology. 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. A positive displacement flow meter is a cyclic mechanism built to pass a fixed volume of fluid through with every cycle. Therefore, most positive displacement flowmeters have a maximum pressure drop specification that is intended to limit positive displacement flowmeter bearing wear to reasonable levels. Its simple design with only two pairs of blades and one moving rotor makes it. Most positive displacement flow meters are designed to be calibrated on a specific schedule.
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 tcs 700 rotary flow meter has a compact size and lightweight design that offers minimal maintenance and long service life. Positive displacement flow meters lumen instruments. Positive displacement flow meters are the only flow measuring technology to directly measure the volume of fluid that passes though the flow meter. It achieves this by trapping pockets of fluid between rotating components housed within a high precision chamber. Blow down the meter with compressed air or gas because it may overspeed and damage the meter. Badger recordall cold water meters meter, valve and control. Positive displacement flow meters model model model model model positive displacement flowmeters operational manual for models model 2, p002, 214, 215 and 216. The emphasis will be on the factors influencing the design and performance of the meter for liquid. The smartpd positive displacement meter is a volumetric meter that provides total volume and flow rate measurements by way of an electronic transmitter adding closed loop control to your system. The design provides the high accuracy and rugged durability required in todays fluid transfer market. Positive displacement gear flow meters can be installed either a horizontal or vertical flow up orientation. Run water or aqueous solutions not approved by max through your flow meter because of internal galling. Along with the smooth oval rotors, exceptional repeatability and high accuracy over a wide range of viscosities and flow rates are features of.
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. Positive displacement flow meters are devices that are used to measure the flow rate of a substance, most commonly a fluid. The meters solid construction and excellent dynamic response are well suited to measurement for many industrial as well as other nonabrasive lubricating. Here is a guide to positive displacement flow meters which includes an overview of the basic design, operation and benefits of this type of mechanical flow meter. Each pulse represents a known volume of liquid that is captured in between the lobes of the impellers. Total control systems is a leading iso9001certified manufacturer of piston and rotary positive displacement flow meters located in fort wayne, indiana. Flow technologys positive displacement flowmeters use two rotating, thermoplastic impellers driven by the flowing liquid. Total control systems tcs manufactures piston and rotary positive displacement flow meters, for use in the petroleum, chemical, industrial, food processing, agricultural industries. The ftb3000 series of positive displacement meters incorporates smooth oval rotors in their design. In general, a positive displacement flow meter consists of a chamber or cavity which restricts the flow. Every cycle of the meters 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. Lc meters incorporate a unique design, presenting minimal intrusion in a flowing stream of liquid, as well as minimal.
The smith meter rotary vane meter principle, combined with the meter s uniquely designed offset inlet and outlet nozzles, minimizes pressure drop across the measuring chamber, which reduces flow through meter. The reasons companies standardize on our meters are simple. A key distinction of positive displacement flow meters is that they offer direct measurement of the volumetric flow rate. A nonintrusive sensor detects the movement of the gear. It is designed to measure clean potable water where flow is in one direction only in resi dential, commercial and. Magnets imbedded in the impellers activate a nonintrusive sensor which generates a pulsed output signal. The low pressure drop and high pressure rating means the omega. These are also considered ideal for applications which require the use of a simple mechanical meter system. The purpose of this paper is to examine the positive displacement pd meter. Smith pd meter displacement meters for liquid measurement. Inside the chamber, a rotatingreciprocating mechanical unit is placed to create fixedvolume discrete parcels from the. Og1 pd oval gear flow meters positive displacement. The max pseries of flow meters are positive displacement piston type units capable of great accuracy over a wide range of. Positive displacement flowmeter technology flowmeters.
They are commercially referred to as bulkmeters and are particularly suited to applications such as aviation refuelling, ship bunkering, tank calibration. They work best with clean, noncorrosive, and nonerosive liquids and gases, although some models will tolerate some impurities. Understanding how a positive displacement flow meter works azom. 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 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. One primary feature is the ability to maintain consistent accuracy despite changing viscosity conditions. Positive displacement flow meters are the only flow measuring instrument that. Thank you for choosing to install a max machinery precision flow meter. The fpd3200 series positive displacement flowmeters are affordable and accurate. Typical illustrations of metering systems will then discussed on how to achieve the best accurate performance. A typical positive displacement flowmeter comprises a chamber that obstructs the flow. Because the force exerted by the fluid flowing through the meter is at right angles to the faces of the displacement rotors, and the rotor shafts are always in a.
Liquid controls is a world renowned supplier of reliable, highaccuracy, positive displacement pd metering systems. Liquid controls proudly manufactures the averyhardoll and lc brand meters and is the leading manufacturer of positive displacement lowmeters and fuel data management systems in. History pd meters have been in existed for more than a century. About positive displacement flow meters instrumart. Zenner displacement type magnetic drive cold water meters model ppd sizes.
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