Positive displacement flow meters operation and installation manual 7. Positive displacement flow meters at best price in india. Pd meters measure flow directly by separating the flow stream into discrete volumetric segments measuring chambers. Alpd positive displacement gear flow meters the smc series algpd gear flow meter is suitable for the precise flow measurement of various fluids of viscosities from 5 up to 25k mm. Accurate measurement of liquid flow is of paramount importance to maintain supreme quality of several industrial processes.
Positive displacement flow meter for fuels and oils positive displacement flowmeter for industrial processes the level of recommended maintenance is heavily influenced by the application. Smith meter pd meters use a rotaryvane principal to obtain direct measurements from the flow stream, without. Liquid controls positive displacement flow meters alpeco. A typical positive displacement flowmeter comprises a chamber that obstructs the flow. Positive displacement pdm and turbine tms are the two types of flowmeters acceptable as primary measurement instruments for custody transfer of liquid petroleum products. The c700 polymer meter is a positive displacement type meter operating on the oscillating piston principle. General lvdt assembly the main advantage of the lvdt transducer over other types of displacement transducer is the high degree of robustness. A quick and easy to use request for quote form is provided for you to contact these positive displacement flow meter manufacturers and suppliers.
You can try these troubleshooting tips to recoup the operational performance of positive displacement flow meters. 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 flow meters houston, tx flowtech. 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. Metering through positive displacement has been an accurate and reliable technology used in many parts of the world for decades. Positive displacement machines pdf combinations of positive displacement and nonpositive displacement pumps are. Oct 30, 2015 an incorrect flow total will be displayed in the meter if the reverse flow is greater than one meter revolution. The meter must be installed in a clean pipe line, free from any foreign materials. Positive displacement flowmeter technology flowmeters. Flow meter resources flow meter application advisor. About positive displacement flow meters instrumart.
To achieve the designed accuracy and ensure that the positiive displacement flowmeter functions properly, a filtration system is required to remove particles larger the 100 m as well as gas. This is accomplished through the known volume that is displaced for each. Especially, since their use was approved for taxable transactions of petroleum products by the national tax agency in japan, positive displacement flowmeters have been assuming a significant role in the field of custody transfer to be certified. The meter may be installed in horizontal or inclined lines. Only fluid that is able to bypass this seal does not get counted, this is. Every cycle of the meters mechanism displaces a precisely. Tms use a bladed rotor contained in a flow tube that is axially suspended in the direction of flow. Liquid controls lc positive displacement flow meters have a reputation worldwide for exceptional accuracy, reliability, and longevity in a broad range of applications. Oval gear positive displacement flowmeters uk flowtechnik. They are used in high viscous, dirty fluid which does not flow through the straight conduit. Therefore, most positive displacement flowmeters have a maximum pressure drop specification that is intended to limit positive displacement flowmeter bearing wear to reasonable levels. The product utilizes a piston that water use rotates in a measuring chamber, each piston revolution being equivalent to a known volume of water. Flowrate is calculated from the number of revolutions of a rotors activated by the energy of fluid. Comparison of turbine with positive displacement meters.
A key distinction of positive displacement flow meters is that they offer direct measurement of the volumetric flow rate. Industrial positive displacement meter model c700 bronze, magnetic drive, flanged or npt ends sizes. Each company has detailed profile information, locations, phone number, website links, product videos and product information defined. Positive displacement flowmeters flowmeters oval product. Positive displacement flow meters a positive displacement flow meter measures flow by displacing a precise and known volume for each revolution of their internal parts. The fmg rotary gas meter is a displacement type gas meter. This disambiguation page lists articles associated with the title positive displacement. If an internal link led you here, you may wish to change the link to point directly to the. Macnaughts positive displacement flow meters are suitable for a wide range of industrial applications including fuel and oil distribution, corrosive chemical. Positive displacement type flow meter applications of positive displacement meters. Generally, positive displacement flowmeter offers high accuracy measurement and is suitable for totaling the flowrate. 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 frequently specified as they offer high accuracy and repeatability.
Jan 20, 20 positive displacement pdm and turbine tms are the two types of flowmeters acceptable as primary measurement instruments for custody transfer of liquid petroleum products. 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. Positive displacement flow meters are precision made liquid measuring flow meters. Total control systems is a leading manufacturer of measurement systems. Do not use a wrench or channellock to aid in handinstalling the pickup sensor. Such types of pumps are basically designed for higher pressure application for example hydraulic fluid power application.
Master meter 101 regency parkway mansfield, tx 76063. The meter is bidirectional and it has an extremely large turndown ratio, up to 400. 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. 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. Positive displacement flow meters are designed for low flow and high accuracy over a wide range of fluid viscosity generally used for thicker liquids. The honeywell versaflow vortex flowmeter has integrated pressure and temperature compensation in 2wire technology, providing maximum performance at the lowest installed cost. 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 between sealing faces is kept to a minimum. Inside the chamber, a rotatingreciprocating mechanical unit is placed to create fixedvolume discrete parcels from the. Operating the flowmeter above the pressure drop limits of the flowmeter can result in premature bearing wear and catastrophic flowmeter failure.
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. They register the volume by counting the number of times a chamber of a known volume is filled and emptied. Over the years, numerous design improvements have resulted in an expanded product line that now serves industrial as well as petroleum applications. The low pressure drop and high pressure rating means the omega. 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. The cbro flow measurement industrial oval gear meter is a lowflow, positive displacement flow meter designed for clean fluids. Meter genesis series line of pd meters for refined products and biofuels. Measuring position and displacement with lvdts tutorial developer zone national instruments figure 2. There are a variety of displacement meters that are used.
Only fluid that is able to bypass this seal does not get counted, this. The actual measurement is performed by two figure 8shaped impel lers rotors rotating within a. Industrial positive displacement meter model c700 bronze, magnetic. The aforementioned are few of the common problems associated with flow meters. It may be easier to install the sensor after the flow meter has been installed in the line. In principle, positive displacement flowmeter requires no external energy such as electricity. There are several types of flow measurement equipment available, which support several demanding operations across industries. A basic analogy would be holding a bucket below a tap, filling it to a set level, then quickly replacing it with another bucket and timing. These are available in single, double and triple capsule models to suit applications covering a wide range of flow capacities. Specification sheet c700 positive displacement meter. There are many types of internals such as two or three gear oval gear, nutating disc, rotary piston and sliding vane. The smaller these clearances are, relates to how high the accuracy will be.
Smith pd meter displacement meters for liquid measurement. 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. This technical document is to examine the posi tive displacement pd flow meter design princi ples, indicating. Simplicity of design and construction ensures unmatched accuracy and troublefree operation over long periods of use. Positive displacement pumps are self priming because there will be very close clearance between rotary and stationary components of pump. Master meters positive displacement meter is nothing short of an. 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. Hydraulic testing, chemical injection or chemical dosing, pharmaceutical application and similar precision applications. The emphasis will be on the factors influencing the design and performance of the meter for liquid. 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. Positive displacement meter is a type of flow meter that requires fluid to mechanically displace components in the meter in order for flow measurement. Meter requires fluid to mechanically displace components in the meter. Troubleshooting tips for positive displacement flow meters.
The piston movement is transferred by magnetic drive to a straight reading. Install the meter with direction of flow as indicated by the arrow molded in the meter case. Our meters are used worldwide in a multitude of applications including agriculture, aviation, lpg. Oval gear positive displacement flowmeters positive displacement flowmeters get their name from their ability to meter discrete pockets of liquid, this is usually done by metering the fluid through a chamber of fixed volume, thereby splitting the fluid up into finite segments with a known volume. Ftb3000 series flow meter is suitable for both gravity and pump in line applications. Positive displacement pd liquid meters have long been the standard of measurement for liquid hydrocarbons such as crude oil. The satam positive displacement meter pd meter is a system with freelymoving blades used to measure petroleum products such as fuels, biofuels and. Positive displacement flow meter for fuels and oils positive displacement flow meter for industrial processes the level of recommended maintenance is heavily influenced by the application.
The product utilizes a piston that water use rotates in a measuring chamber, each piston revolution being equiva. Oscillatingpiston type f04c nonpositive displacement phd thesis in project management pdf pumps f04d. The brooks models bm04, bm07, bm10, bm40 and bm50 are positive displacement oval gear flowmeters designed for applications requiring high accuracy measurement of clean liquids with viscositys less than cp standard, or up to 1 million cp with rotors gears cut for high viscosity. It is designed to measure clean potable water only in residential, commercial and industrial settings. 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. Applications, advantages and disadvantages of positive. They can be used in very viscous, dark colored fluids. Our worldclass positive displacement flow meters are among the most accurate available in any industry and backed by excellent customer service, support and prompt deliveries. Positive displacement water meters from zenner performance utilize a magnetically driven, positive displacement, oscillating piston design. The smith meter genesis series is the future in positive displacement meter technology.
With only 2 moving parts, the positive displacement meter offers trouble free operation and long service life. Accordingly it is used in various kinds of applications including industrial instruments. Positive displacement flow measurement technology accurately measures the volume of liquid passing through the flow meter. 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. Additional positive displacement flow meter manufacturers. The meter is bidirectional and it has an extremely large turndown ratio, up to. Ideal for measuring oil, fuel, polyurethane, brake fluid, skydrol and other nonabrasive, low to. Comparison of turbine with positive displacement meters for. Designed with the future in mind for use in mobile and. Fundamentals and principles of diaphragm meters james thomson sensus metering systems 805 liberty blvd. Even today, pd meters are the most accurate custody transfer meters available.
Installation before attaching the sensor to the flow meter, check for any potential clearance issues. Introduction to positive displacement flowmeters pd. 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. 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. Pdf 250 we are one of the best manufacturers, exporters and suppliers of oval gear flow meter with digital display in india.
The accuracy of positive displacement flowmeters relies on the integrity of the capillary seal that separates incoming fluid into discrete parcels. Oval gear meters are displacementtype volume meters that transport defined incremental volumes in individual measuring chambers. A displacement meter is a special meter used to measure the flow of fluids using the displacement mechanism of the meter. It is designed to measure clean potable water where flow is in one direction only in residential, commercial and industrial settings. Applications include lubricants, fuels, chemicals and solvents, oils and greases. A positive displacement flow meter measures flow by displacing a precise and known volume for each revolution of their internal parts. Meter casing spuds have external straight threads conforming to. Positive displacement flow meters, master pd flowmeter.
Do not attempt to install or use your aw gear meters product until you have read the safety. This technology works by directing the fluid to mechanically displace components within the meter to measure its flow as discreet parcel volumes. A basic analogy would be holding a bucket below a tap, filling it to a set level. Its simple design with only two pairs of blades and one moving rotor makes it. A positive displacement flow meter is a cyclic mechanism built to pass a fixed volume of fluid through with every cycle. For example if a flow meter is processing a fluid that displays lubricating properties i. Lessons about positive displacement flow meters omega. Positive displacement flow meters accurate flow measurement. Positive displacement flow meters directly measure the volume of fluid that passes though the flow meter. Ppd positive displacement meter zenner positive displacement water meters utilize a magnetically driven, positive displacement, oscillating piston design. The meter is for use in potable cold water up to 120.
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