Calculation of discharge for the first head loss measurement 7 objectives the purpose of this experiment was to familiarize students with the open channel flume and to calibrate the flume orifice using hydraulic principles. Pdf design and experiment of multirow pneumatic precision. Singlephase and twophase flow through thin and thick orifices. The orifice meter consists of a flat orifice plate with a circular hole drilled in it. The apparatus contains a rotameter, a turbinetype meter, a. This system occupies more space as compared to the orifice meter.
There is a pressure tap upstream from the orifice plate and another just downstream. To find the coefficient of discharge for orifice meter. This change can be used to measure the flowrate of the fluid. Differential pressure type flow meters head flow meters measure flow rate by introducing a constriction in the flow. For these reasons it is widely used, particularly for large volume liquid and gas flows. Understand strengths and weaknesses of gm, ionization chamber, and scintillation measurement tricks and tips proper use of a meter in a response. The objectives of this experiment were to gain knowledge on pressure and flow measuring devices, and to calibrate an orifice flow meter and a venturi meter. The flow measuring apparatus is used to familiarize the students with typical methods of flow measurement of an incompressible fluid and, at the same time demonstrate applications of the bernoullis equation. The venturi flow meter consists of a streamlined contraction and a streamline expansion as shown the diagram. Till abstract orifice and venturi flow meters decrease the pressure of a fluid by increasing its velocity as it flows through them.
Daniel measurement and control white papersfundamentals of orifice meter measurement page 1 fluid meters are divided into two functional groups one measures quantity positive displacement. The device is being used since 1889, popularity raised during 1920s since the long back device is same in its uses and purpose of testing, few real improvements appeared in recent years with its design and quality of tester. Orifice meter definition and meaning collins english. During this time, mass flow meters based upon the coriolis effect have evolved. Electrical energy meters principles and applications. Design of flow measurement experiment by ahmed al yousef on prezi. Department of mechanical engineering calibration of an orifice meter objective. Abstract flow meter measurement apparatus is designed to operate together with a basic hydraulic bench or any water supply.
Pdf flow through an orifice rajkumarsingh mondatta. Bsen 3310 lab 2calibration of orifice flow meter and. In completing this particular experiment, the student should develop or improve mastery of the. The standard orifice plate does not follow the general trend in the discharge coefficient curve that the other flow meters do. Yamamoto department of chemical engineering, college of engineering and architecture, cebu institute of technology university n.
Bsen 3310 lab 2calibration of orifice flow meter and venturi. In order to use any of these devices for measurement it is necessary to empirically calibrate them. The combination of an orifice plate with the differential pressure transmitter optibar dp 7060 forms a versatile dp flowmeter for a wide range of applications with liquids, gases or steam. It is used for robust applications as it is known for its durability and is economical. Design and experiment of multirow pneumatic precision metering device for rapeseed. Soda pdf merge tool allows you to combine two or more documents into a single pdf file for free. Onsite calibration of flow metering systems installed in. Experiment 1 report flow through a venturi meter group members. To determine the coefficient of discharge of notch v, rectangular. Pdf merge combinejoin pdf files online for free soda pdf. Effects of entrained liquid on orifice measurements william johansen colorado engineering experiment station, inc. The experiment should take less than 45 minutes, and the lab report should take 3 to 4 hours to complete. The principle of the orifice meter is identical with that of the venturi meter.
These pressure head readings are given in height of a liquid column ft of water. Never drop the meter or apply excessive force to it. Wallaces hints regarding common strengths and weakness of each section of a lab report a sample cover memo. Hence, orifice meters are effectively precalibrated and not exempt from this discussion. The objective of this experiment is to locate the centre of pressure of an immersed. Introduction there are many different meters used to measure fluid flow. To find the water flow rate using the venturi meter and the pressure distribution along the meter. With the flow regulating valve of the bench closed, switch on the bench pump and allow water. The volumetric flowrate, q, of a given fluid through an orifice nozzle flow meter is proportional to the square root of the pressure drop across the meter.
Flow through a venturi meter from maae 2300 at carleton university. Do not leave the meter in areas of direct sunlight or high temperaturehumidity do not clean the meter with organic. It consists of an orifice plate which is the basic element of the instrument. Differential pressure type flow meters head flow metersmeasure flow rate by introducing a constriction in the flow. Prepare the instruments such that the water passes sudden enlargement, then venturi meter, orifice plate, elbow, and finally rotameter. The major objective of this experiment was to construct, test and model a simple, inexpensive venturi meter. Calibration of venturi and orifice meters hirizza junko m. There are many different meters used to measure fluid flow. There is no way of determining the value of k except by experiment. Fm 308 flow measurement by venturi and orifice meter objectives.
To determine the coefficient of discharge of the orifice meter 1. The reduction of the cross section of the flowing stream in passing through the orifice. Discharge coefficient performance of venturi, standard. It is a cheaper device as compared to venturimeter.
In order to perform this experiment, we will use a two liter bottle and drill a small hole in. Orifice meters are commonly used to measure gas volumes in alberta. To ensure accurate measurements from your ph meter the meter will need to be calibrated both before it first use and on an ongoing basis. Orifice meter apparatus offered by us are in compliance with the set industrial standards. Objective the main objectives of this experiment is to obtain the coefficient of discharge from experimental data by utilizing venturi meter and, also the relationship between reynolds number and the coefficient of discharge. A venturimeter is a device used for measuring the rate of a flow of a fluid flowing through a pipe. Jan 11, 2017 calibration of venturi and orifice meters 1. This simple webbased tool lets you merge pdf files in batches. Megger working principle types history uses of megger. Calibration of orifice flow meter and venturi flow meter d. Orifice meter apparatus,orifice flow meter,orifice meter. This experiment was designed as an introductiontothisprocessusinganedibonflowmetermoduletoestimate dischargecoefficientduring afluid flowingprocess. Students measure flow using a venturi meter, an orifice plate meter and a rotameter.
In this post the effect of venturi meter and orifice plate on the fluid flow will be disciussed and complete work will be presented in the form of report. The instrument is having four knobs, out of which the two knobs in the bottom is the. Operational experiences proving mass flow meters with small volume provers introduction small volume provers were introduced several decades ago, and numerous papers have been presented covering the technical and empirical operation of these provers. Cebu city, 6000 philippines this experiment aims to be calibrate both the venture apparatus and the orifice apparatus. All fluid meters, however, consist of two distinct parts, each of which has different functions to perform. Combine pdfs in the order you want with the easiest pdf merger available. Pdf the main objective of this study was to design a pneumatic disk with. An annotated sample lab report prepared on a fluids experiment. A fluid passing though an orifice constriction will experience a drop in pressure across the orifice.
The magtube flow meter is a device proposed for measuring the flow rate of water through. Venturimeter pitot tube pressure tap university of iowa. It is that portion of the venturi where the fluid gets converges. Each meter works by its ability to alter a certain physical property of the flowing fluid and then allows this alteration to be measured. This also work on the same principle as that of venturimeter. Materials and methods a manometer figure 1, an orifice flow meter figure 2, and a venturi flow meter figure 3 were used to measure the flow rate and pressure change of. Biases due to orifice plates installed backwards and warped orifice plates are also discussed. Comparative study on orifice versus turbine meter for gas flow.
The squareedged orifice meter with corner tappings and the venturi nozzle. Janna 1 abstract an inexpensive yet portable device for calibrating four different flow meters in the undergraduate fluid mechanics laboratory was designed and constructed. Investigating torricellis law, or the effect of height on flow rate. Orifice meter the venturi meter described earlier is a reliable flow measuring device. Most studies of meter tube characteristics have concerned surface roughness and its effect on the discharge coefficient. Fundamentals of orifice meter measurement this white paper provides an overview of orifice meter technology, its advantages and general installation recommendations, as well as describes basic gas flow laws and the variables of orifice meter flow equations.
Comparison of selected differentialproducing, ultrasonic, and. Energy losses through venturi, orifice, and rotameter. Flow through venturi meter background and theory introduction flow meters are used in the industry to measure the volumetric flow rate of fluids. An orifice meter consists of a flat plate that has a sharpedged hole accurately machined in it and placed concentrically in a pipe as shown in figure 12. Subject fluid mechanics topic module 4 orifice meter lecture 29 faculty venugopal sharma gate academy plus is an effort to initiate. Pipe with an orifice flow meter, pump with flow control valve, manometer. Determination of coefficient of discharge for venturimeter. In this experiment the fluid in motion is flow through different.
Morrison 6 flow regimes in a pipe laminar transitional turbulent smooth one direction only predictable chaotic fluctuations within fluid. Enlargement, thenventuri meter, orifice plate, elbow, and finally rotameter. All differentialpressure flow meters require a flowarea con striction to create a. It has a limitation of the lower reynolds number of 150,000. Ysi model 56 dissolved oxygen monitor instruction manual. This is to shown different types of methods of flow measurement of an incompressible fluid. The design of a fluid meters apparatus for the fluid.
This free online tool allows to combine multiple pdf or image files into a single pdf document. Calibrate rotameter and orifice meter and explore reynolds. In this lab you will learn about different flow measurement techniques. Basic principle of orifice meter when an orifice plate is placed in a pipe carrying the fluid whose rate of flow is to be measured, the orifice. Fm 308 flow measurement by venturi and orifice meter. To find the coefficient of discharge of an orifice meter.
The default calculation involves air passing through a mediumsized orifice in a 4. Switch the pump on, allow the water to enter the flow measurement instruments,which are connected to manometers tubes. It mainly consists of an orifice plate, an orifice plate housing, and a meter tube. More specifically, this simple venturi meter, constructed from materials available at a local hardwareauto parts store, was characterized by determining the venturi coefficient and. The design of a fluid meters apparatus for the fluid mechanics laboratory william s. How to be productive at home from a remote work veteran. An orifice meter is a conduit and a restriction to create a pressure drop. Pdf design and validation of a calibrated orifice meter for sub500.
Ce327 chemical engineering laboratory i fall 2004 flow meter calibration skill outcomes. This is done by creating a smaller diameter at a certain point in the pipe. An introduction to an orifice meter 909 words bartleby. Operational experiences proving mass flow meters with small.
The meter is provided with a field to which entries can be made for this purpose ct or vt factor. The venturi meter has a converging conical inlet, a cylindrical throat and a diverging. Setting the standard integrating meter diagnostics. Orifice meter merchant institute of technology,piludara prepared by. The measured alteration is then related to the flow. Even if accuracy is perfect at some flow rate, because the simple calibration equation will not exactly capture natures behavior over the entire range, the measured f will not represent the truth over the entire range.
Introduction an orifice meter is a type of flow meter used to measure the rate of flow of liquid in form of steam, using the differential pressure measurement principle. In this post, i am interested in covering the details about how to measure flow using orifice meter. To find the coefficient of discharge for venturi meter. The sensor must be securely mounted on the meter before use. This is usually done by dipping the probe into a buffer solution of a known ph and following the calibration steps based on our specific ph meter. A nozzle, venturi or thin sharp edged orifice can be used as the flow restriction. An orifice meter is basically a type of flow meter used to measure the rate of flow of liquid or gas, especially steam, using the differential pressure measurement principle. Comparative study on orifice versus turbine meter for. As the gas flows through an orifice meter is the gas being measured correctly. Orifice meters are differential pressure flow meters that provide accurate, economical, and reliable flow measurement and may be found in many. To determine the coefficient of discharge of an orifice meter.
However this meter is relatively complex to construct and hence. If you are looking for a way to combine two or more pdfs into a single file, try pdfchef for free. Head meters or obstruction meters are another type of fluid meter that measure and monitor the fluid behavior, specifically the velocity of the fluid as well as its mass flow rate. Neither the meter nor sensor is waterproof by itself. You will measure the flow rate in a pipe system using several common measurement techniques. An orifice meter is a piece of equipment used to measure the flow rate of a gas or a fluid. Introduction the orifice meter, the nozzle meter, and the venturi meter are the most common devices used to measure the instantaneous flowrate. To do this, calibrate the orifice meter, then compare the average of the noisy measured f value to a known standard. It is working at variable pressure drop, which is caused by an area. This instrument is able to demonstrate the flow measurement comparison by using orifice, venturi and rotameter. As liquid flows through the pipe, the flow suddenly contracts as it approaches the orifice and then suddenly expands after the orifice back to the full pipe diameter.
Pdf experimental investigation of the installation. It is the portion that lies in between the converging and diverging part of the venturi. Position the water flow measuring apparatus on the horizontal operating surface of the hydraulics bench 2. Oct 29, 20 orifice meter is another simple device used for the measuring the discharge through pipes, orifice meter also works on the same principle as that of venturi meter i. The liquid may be water, hydrocarbons, or compressor oil. It consists of flat circular plate which has a circular hole, in concentric with the pipe.
Place a restriction in a pipe, then measure the resulting pressure drop. Department of mechanical engineering venturi meter objective. Venturi meter is a device or component which is used for measuring the rate of flow of liquid through pipes. Venturi meter and orifice plate effects are two main and very important phenomenas in fuild mechanics sub field of mechanical engineering. Ce 321 sample laboratory report packet this packet contains the following materials to help you prepare your lab reports in ce 321. Each of these meters operates on the similar principle. Orifice plate meters are one of the most widely used technologies in industry for gas flow metering. Combine the numerical values obtained in item 4 to give a numerical value for the. Facts about orifice flow meters instrumentationtools. Thus, qk h where is the meter calibration constant and is the manometer reading that. Ce272 fluid mechanics sessional lab manual department of civil engineering ahsanullah university of science and technology.
Ysi model 56 dissolved oxygen monitor instruction manual created date. The two most important factors that influence the reading of an orifice meter are the size of the orifice and the diameter of the pipe which it is fitted into. This is due to their relative simplicity, the extensive publicly. It is typically made of carbon steel, and the main components of the device are. In this research, a statistical modeling is introduced in order to evaluate. Tecquipments flow measurement apparatus shows the typical methods of measuring the flow of an essentially incompressible fluid water. To calculate the flowrate of a fluid passing through an orifice plate, enter the parameters below. Experiment 1 calibration of single phase energy meter aim. Energy losses through venturi, orifice, and rotameter flowmeters. Experimental investigation of the installation effects on the venturi flow meter performance conference paper pdf available june 2000 with 2,456 reads how we measure reads. It is mainly used for robust applications as it is known for its durability and is very economical.
From power station to plug, megger test equipment helps you maintain the electrical network, monitor its condition and maintain supply to your customers. Calibration of an orifice meter as you requested in your email of 080703, i have attached a copy of my final report on the calibration of an orifice meter experiment. Venturi meter and orifice meter are the commonly used flow meters for measuring massvolumetric flow rate or velocity of the flowing fluid. To calibrate the energy meter using direct loading. Our pdf merger allows you to quickly combine multiple pdf files into one single pdf document, in just a few clicks. Differential pressure type flow meters head flow meters measure flow rate by introducing a constriction in. A simple, inexpensive venturi experiment applying the.
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