The following is a pump sizing problem to illustrate the calculations in this article. Technical knowledge required for metering ranges from very basic ability to read a meter and write down the. Industrial flow measurement industrial flow measurement. Key points for selection the benefit of the venturi meter over the orifice meter also a differential pressure meter lies in the reduced pressure loss experienced by the fluid. It may be necessary to select a magnetic flowmeter that is larger or smaller than the adjacent piping to ensure the fluid velocity is in the specified measuring range of the sensor. Flowmeter writeup from electronic flowmeters while the flow measurement technologies discussed in this chaptermagnetic, vortex, and ultrasonicare neither exclusively nor exhaustively electronic in nature, they do represent a logical grouping of flow measurement technologies. Various types of flow meters and flow sensors are available, and only by selecting the appropriate device according to the targeted fluid and purpose will the required results be obtainable. Abb provides an excellent tool for selection and sizing of flow meters including quick and simple flow calculation and a unique feature to compare different. Meter sizing allows the water purveyor to capture all revenue possibly while balancing the potential pressure losses du to higher flows.
If 10 25% of total is low flow, use compound meter if more than 25% of total is low flow, useresidential. Nomenclature flow capacity the valve sizing coefficient most. This meter selection website is a free tool for all users, without the need for registration. And determining flow through a valve can be simple. Computation requires temperature sensor probes select. Selecting magflow flow meters he main questions which need to be considered before selecting a magnetic flow meter. Technical water meter selection guidelines department of. Many features have been incorporated to provide access to standard. Flow measurement process instrumentation siemens global. Flowmeter writeup from omega pennsylvania state university. Industrial flow measurement basics and practice abb group. Monitoring your processes with accurate flow measurement leads to higher transparency, improved productivity and a better bottom line. This technical bulletin shows how flow can be estimated well enough to select a valve sizeeasily, and without. A guide to sizing orifice plate flow meters learning.
For flow meter piping, specify its direction, size, material, schedule, flange pressure rating, accessibility, up or down stream turns, valves, regulators and available straightpipe run lengths. In all cases you get the data in graph and data form. Obtain information about the expected service conditions. Sizing is critical to select the correct vortex meter for each application is critical to the performance of the vortex meter. This edition expands the ways to approach the sizing of water service lines and meters and offers improved methods for the sizing of dedicated irrigation meters. Chart graphical check of measured error and pressure loss over flow range. Water meters selection, installation, testing, and. Go to the rosemount 8800d product page, and select size for detailed sizing on most applications, or complete a.
A flow meter or flow sensor is an instrument used to measure linear, nonlinear, mass or volumetric flow rate of a liquid or a gas. This should apply to distance from any valve, fitting, meter, or backflow device. Valve sizing technical bulletin scope valve size often is described by the nominal size of the end connections, but a more important measure is the flow that the valve can provide. In the theory section, selections of the flow meters are included and the general theories applied for the sizing for each type of the flow meters are included.
Flowmeter sizing because of its effect on flow velocity, sensor size is an important consideration. Techtalkmagnetic flowmeter sizing clipper controls. Slippage through the clearances of a pd meter can be characterized by the equation in figure. In situations where the cost to pump water is high, this benefit can represent significant savings over the life of the system. See section 22 for more details on computeraided valve selection.
All flow meter specifications should clearly state both the accuracy and the repeatability of the meter at minimum, normal, and maximum flows. Click here to download the comprehensive 290page handbook now. Precision product filtering to narrow your selection. Selection guide lcw flcw non rates conductive meter magnetic flow meter 4wire magnetic row meter 2wire capacitance magnetic vortex flcw meter variable area row meter differential pressure fion meter coriolis flcw meter vortex flcw meter variable area row meter. Practical engineering solutions a l ling fluid flow. Flow meter selection sizing and flow rates chart sierra. Its cost of operation is minimal and familiarity with the device is near universal. It is important to size any compound meter installation to minimize the total flow each installation experiences in the changeover flow range. For example, bearings can quickly wear and result in inaccuracy if they are exposed to corrosive or contaminated fluids. Turbine flow meter model number selection and sizing guidelines there are 4 major steps in defining a turbine flow meter. A gamma sizing tool helps size a flowmeter for use in radiometric measurements for level, level limit and density applications.
To optimize every operation, siemens offers a comprehensive selection of flow sensors and transmitters as well as complete flow systems across all technologies, including electromagnetic, coriolis, ultrasonic. Ii flow calculation equation spherical ball as float. Choosing the right scientific flow meter for your application doesnt have to be difficult. The pump is a centrifugal pump that will need to pump 800 galmin when in normal operation. Turbine meters are used on connection sizes ranging from 2 to 20 inches and have accuracies in the range of 0. Applicator help pages of sizing flow dimensioning of flow meters. Perform a series of calculations to obtain the flow rate in acfm and the operating density in poundsft3. The stepbystep method outlined in this section is the most common method of sizing. This will insure an appropriate liquid velocity for the application. Abb provides at no cost, resource material to help in the selection and sizing of. Accessories select suitable accessories for a flowmeter. The flow meter shall be easily accessible, housed in a rectangular valve box, and marked fm. Column 4 is the maximum number of fixture units permitted on a water meter when the plumbing fixtures are predominantly flush valve type water closets and urinals, based on 2012 upc, 2012 ipc or 2012 irc, whichever is applicable.
The user faces the difficult task of selecting the technically best and. Selecting a meter requires a firstrate technical assessment of the pressurized system and a thorough evaluation of the capabilities and needs of the operator. The case studied will aid the reader to complete the selection and sizing for the several flow meters base on their own system. Gas flowmeter selection chart 1 clean gas dry, dirty gas wet, dirty gas low flow wide turndown high temp low pressure loss installation cost maintenance mass flow volumetric flow thermal dispersion 1 1 3 1 1 1 1 1 1 vortex shedding 1 2 4 3 2 1 1 2.
This equation forms the basis of the measurement calculation for meter. Fixed depth turbine insertion flow meters for full pipe flows. These flow meter selection guidelines above are the basic minimum you should endeavour to incorporate into any flow meter specification and selection process. The orifice plate is a very robust flow measurement device. While this flow calculator will size your flowmeter for most liquids and gases in the more common flow unit dimensions, it is designed for flow estimation and comparison purposes only. Choosing the flow meter size bearing selection pickoff selection calibration requirements these components are interrelated and should be consid ered as a system to obtain optimum meter performance. It is often better to calculate the ideal meter size rather than simply match the existing pipe size. Technical water meter selection guidelines department of energy. Pump sizing and selection made easy chemical engineering. Swearingen, corte, choosing the right flowmeter for the job, chem. Flow through the meter is caused by differential pressure across the measuring chamber. Reference owners manual for complete accuracy and uncertainty.
Selection guide for displacement and turbine meter. Flow through the meter not accounted for in the measurement chamber but which flows though these clearances is commonly known as slippage. The diaphragm seal sizing tool allows users to size and select the correct seal according to the sensor, span, membrane material, fill fluid, temperature and pressure. Abb wedge sizing software the perfect fit to your metering needs the sizing program is an essential tool to assist in the selection and application of abb flow meters and support. The lower rate may eliminate some types of meters because. Liquid flowmeters a guide for selecting a flowmeter for pressurized systems. We are introducing a brandnew easytouse interface for your flow meter selection. Flow meter selection guide learning instrumentation and. Incorporates a large library of the physical properties of typical process fluids. Magnetic flowmeter sizing selecting the proper magmeter size the proper size of a magmeter is an important issue in terms of performance and longevity.
In the application section, several case studied are shown and discussed in detail step by step for the calculation. The selection method of the flow measurement instrument depends on the application. Various types of flow meters and flow sensors are available, and only by selecting the appropriate device according to the targeted fluid and purpose will the. You are told to purchase a pump for your manufacturing facility that will carry water to the top of a tower at your facility. In addition to flowmeter selection and sizing, flowexpertpro includes the following features. Do you require an integral display or remote display. Turbine flowmeter size selection for gas measurement general in order to correctly size a turbine flowmeter for a gas measurement application, it is necessary to. The case studied will aid the engineers to do the selection and sizing for the several flow meters base on their own.
Numerous practical details provide the user with valuable information about flow metering in industrial applications. King instrument company does not guarantee the accuracy of this calculator without the verification of customer service or sales and is not responsible for any. Fluid flow measurement selection and sizing engineering. This page introduces the process for selecting a flow meter or flow sensor. M22 sizing water service lines and meters, third edition pdf. Liquid flowmeters a guide for selecting a flowmeter for. The theory section covers the selection of flow meters and the general theories applied for the sizing of each type of the flow meter. These instructions are designed to expose the user to the different aspects of valve sizing. Fluid flow measurement selection and sizing idc technologies. It is one device that is very easy to use and can easily be adaptable to many flow measurement applications. Coriolis mass flowmeter coriolismaster fcb430 and fcb450.
Refer to the product reference manual for typical flow rates for common applications. This equation forms the basis of the measurement calculation for meter tubes. The righthand summary to show you where you are in the flow meter sizing process. When choosing flowmeters, one should consider such intangible factors as familiarity of plant personnel, their experience with calibration and maintenance, spare parts availability, and mean time between failure. With abbs knowledge about flow measurement and management, you have access to over 100 years of flow measurement and control experience to help you save cost and increase profits.
Consult sierras selection chart for sizing and flow rates. Product data sheet january 2014 0081004727, rev ue industry leading performance with standard reference accuracy of 0. Mass flowmeter coriolis supplier manufacturer mass. Suggested guidelines and examples for sizing normal. This manual also covers a useful field method called demand profiling that can be used to evaluate actual customer use patterns and help optimize meter size selection. This are also included in the introduction and theory sections. A meter undersized will create a pressure loss while an over sized meter will not have this issue. For more information regarding product offering and ordering information, refer to ordering information on page 6 in this product data sheet. Water meters selection, installation, testing, and maintenance.
While the selection software does not make a definitive selection, it will provide the information required by the user to make an informed decision. Versaflow magmeter sizing program operating instructions page 9 of 14. How to select a flow meter flow knowledge keyence america. This guideline assist engineers to size flow measurement instrumentation orifice plate, venturi tube, pitot tube, nozzle, rotameter, vane meter, positive displacement flow meter and etc with the engineering calculation. Key points for selection these meters can be susceptible to wear and resulting inaccuracies.
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