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