If your pdf reader is displaying an error instead of opening a pdf file, chances are that the file is c. Aim 2 marks state the objective of the orifice meter experiment. By other side years of research and experiments had been done obtaining better characterization of typical differential pressure devices nozzles, orifice plate, etc. Pdf a 530 kgs orifice plate cooling water flow meter. Theory flow measurement lab copy return to 365 bull run hall tecquipment page 2 now it remains only to determine the kinetic head at points c and d. An orifice is an opening in the wall of a tank, while a mouthpiece is a short pipe fitted in the same opening. Depending on the type of scanner you have, you might only be able to scan one page of a document at a time. Determination of coefficient of discharge for a small orifice mouth piece by constant head method 8 experiment no 4. Post the velocity will also delete the form of the link copied to conserve the apparatus. It is an alternative and cheaper device to the venture meter, used to measure the rate of fluid flow in a pipe. The system consists of a pipe of several meters plumbed in series. Mar 26, 2012 pressure drop across the orifice meter was measured with the help of manometer mounted on flange taps of the meter. The objective of this experiment is to familiarize students with several typical methods of measuring the discharge in a pipe system during steady flow.
Start the experiment with the default values of length, mass and intial displacement in angle. An orifice meter consists of an orifice plate, a holding device, upstream downstream meter piping, and pressure taps. 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. This white paper provides an overview of orifice meter technology, its advantages. Flow measurement by an orifice is based on the application of bernoullis equation, which states that a relationship exists between the pressure of the fluid and its velocity. And the inlet kinetic head can be taken to be the same as the. Check whether the water level in the main tank is sufficient for the suction pipe of pump to be completely immersed. Meanwhile, the loss coefficient can be determined when fluid flows through a 90 elbow by measuring flow rate on manometers. The experiment is designed to study uniform water flow over a range of flow rates. The principle of the orifice meter is identical with that of the venturi meter. An oversized pdf file can be hard to send through email and may not upload onto certain file managers. An introduction to an orifice meter 909 words bartleby. To find the coefficient of discharge for venturi meter. Introduction to surveying and hydraulics fluid lab 2 orifice meter cover page module code and name.
Construction and working principle of orifice plate flow meter video lecture of flow measurement transducers chapter in subject electronic instrumentation an. There is a pressure tap upstream from the orifice plate and another just downstream. Use the hook gauge to measure the trajectory of the jet. This implies that the curves accurately represent the data points. The orifice meter must be installed in the proper orientation relative to the pipe and the fluid measured. To calibrate the given orifice meter and to determine the variation of coefficient of discharge over reynolds number. Second to the venture meter experiment through the power source to view it. If your scanner saves files as pdf portbale document format files, the potential exists to merge the individual files into one doc. Pipe fittings and valves upstream from the primary element generate swirls and crosscurrents, which if uncorrected by a straightening vane may considerably upset the flow measurement. For these reasons it is widely used, particularly for large volume liquid and gas flows. Primary element in orifice measurement, there exists the primary measurement element and the secondary. It is mainly used for robust applications as it is known for its durability and is very economical. To find the coefficient of discharge for orifice meter.
Theory flow measurement lab copy return to 365 bull run hall tecquipment page 1 for this experiment, internal pressure in the pipe is not calculable, and can only be determined experimentally. Adobe designed the portable document format, or pdf, to be a document platform viewable on virtually any modern operating system. Pdf is a hugely popular format for documents simply because it is independent of the hardware or application used to create that file. Calibration of contracted rectangular notch and triangular notch 9 experiment no 5. Introduction flow meters are used in the industry to measure the volumetric ow rate of uids. A flexible hose attached to the overflow pipe returns excess water to the hydraulics bench. An orifice plate meter is designed to measure the required flow rate to cool a nuclear reactor at a design point of 20 kgs. The purpose of this experiment is to determine the value of k for a orifice. The pdf format allows you to create documents in countless applications and share them with others for viewing. Turn on the pump that supplies water to the pipe with the orifice meter. The pressure term in the bernoulli equation must then be replaced by the experimentally determined head height at each pressure tapping the.
The paint program can help you make new image files, but it cannot open document or pdf file. It is used for robust applications as it is known for its durability and is economical. Flow measurement by venturi and orifice meters iit bombay. Orifice meter flow measurement fluid mechanics scribd. Download flow through venturi meter experiment lab report pdf. The ideal pressure distribution along the convergent divergent pipe may be seen from. Cfd simulations have been carried out and compared with experimental data using water up to 3 ms. Orifice meter free download as powerpoint presentation. There are many different meters used to measure fluid flow. From this experiment, we will obtain the flow rate measurement with comparison of pressure drop by utilizing three basic types of flow measuring techniques. An adjustable overflow pipe is adjacent to the head tank to allow changes in the water level. Consider a small orifice in the side of a vessel with the head of water above the orifice kept.
An orifice meter is a fluid meter on which an orifice is placed on transversely to measure the rate of flow of fluids within the pipe and their velocity montagna et al. Read on to find out just how to combine multiple pdf files on macos and windows 10. Figure 6flow meters apparatus orifice meteruse the procedure and write up requirements as specified for the venturi meter. The orifice meter, sometimes also called a head loss flow meter, is chosen most frequently because of its long history of use in many applications, versatility, and low cost, as compared to other available flow meter types. The purpose of this experiment is to study the flow through orifice meter. Pdf che241 lab report flowmeter measurement apparatus. To calibrate the given ori ce meter and to determine the variation of coe cient of discharge over reynolds number. The orifice and free jet flow apparatus consists of a cylindrical head tank with an orifice plate set into its side figure 6. A mouthpiece will be running full if its length does not exceed two to three times the diameter. 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.
Theory overview of flow measurement using differential. A pdf file is a portable document format file, developed by adobe systems. The 405p compact orifice plate is a wafer style meter and has a traditional style orifice plate integrally machined into the wafer. Calibration of an orifice meter msu college of engineering. 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. Adobe systems is a software manufacturer that has created many document and multimedia editing programs. You can use the tools in paint to add something to a different document. A popular flow meter for use with tecquipments flow meter calibration unit h40. The flow velocity and discharge calculated based on the bernoullis equation should be corrected to include the effects of energy loss and viscosity. However this meter is relatively complex to construct and hence. To determine the coefficient of discharge of the orifice meter 1. Qk h where is the meter calibration constant and is the manometer reading that measures the pressure drop before and after the orifice. Venturi and orificemeters are the most commonly used nowsensing elements in. Show all steps of derivations of flow rate expressions in your lab.
As the name implies, it consists of an orifice plate which is the basic element of the instrument. There is an inlet water valve, an air pipe operated water flow control valve, a magnetic inductive flowmeter, a turbine flowmeter, a rotameter, an ultrasonic flowmeter, an orifice meter, and a. Orifice meter the venturi meter described earlier is a reliable flow measuring device. It consists of an orifice plate which is the basic element of the instrument. Download flow through venturi meter experiment lab report doc. How to shrink a pdf file that is too large techwalla. Fluid mechanics lab oratory manual calibration of orifice meter. I paid for a pro membership specifically to enable this feature. Flow test data book and flow handbook for 405 compact. Nov 10, 2018 an orifice meter is a piece of equipment used to measure the flow rate of a gas or a fluid. Luckily, there are lots of free and paid tools that can compress a pdf file in just a few easy steps.
Orifice meters are built in different forms depending upon the application specific requirement, the shape, size and location of holes on the orifice plate describes the orifice meter specifications as per the following. For measurement through venturi, open the outlet valve of the venturi meter line and close the valve of the orifice meter line. The basic equation for the orifice meter is obtained by writing the bernouli equation for the incompressible fluids across the upstream cone. It mainly consists of an orifice plate, an orifice plate housing, and a meter tube. Army engineer research and development center erdc, waterways. Instant access an instrument use to view it passes through venturi meter experiment lab password to undo. An orifice is a flat plate with a centrally drilled hole machined to a sharp edge. Fm 308 flow measurement by venturi and orifice meter objectives. Velocity and total pressure measurement using pitot tube. Nov 25, 2016 orifice coefficients are smaller and more variable than those for the venturi and the quantitative treatment of the orifice meter is modified accordingly. The discharge determined using a venturi meter, an orifice plate meter and a rotameter will be compared to the discharged measured using the volumetric. Each meter works by its ability to alter a certain physical property of the flowing fluid and then allows this alteration to be measured. To combine pdf files into a single pdf document is easier than it looks. Orifice meter the venturi meter described earlier is a reliable flowmeasuring device.
The orifice meter consists of a flat orifice plate with a circular hole drilled in it. The flow is determined using a sudden enlargement, venturi meter, orifice plate, elbow and a rotameter. A timedependent experiment employed c d to yield model results which were within 3% of the experimental data obtained in draining water from the pipe through the orifice. To find the coefficient of discharge for ori rice meter. The iso5167 standard condenses all this experimental information. Orifice meter merchant institute of technology,piludara prepared by. Bsen 3310 lab 2calibration of orifice flow meter and.
Study the basic principles of flow measurement devices including the venture meter, the orifice meter, the nozzle meter and the rotameter. The measured alteration is then related to the flow. From 1924 to 1935, a significant amount of research and experimental work was conducted by the american gas association aga and the american society of mechanical engineers asme that resulted in the development of orifice meter coefficients and standards of construction for orifice meters. The pressure difference caused by the constriction is correlated to the flow rate using bernoullis theorem. Here the orifice plate is used for the restriction in the direction of the fluid flow. Fm 308 flow measurement by venturi and orifice meter. Background and theory flow meters are used in the industry to measure the volumetric flow rate of fluids. Venturi meter and orifice meter are the commonly used flow meters for measuring massvolumetric flow rate or velocity of the flowing fluid. Since the area ratio, inlet to outlet, of the diffuser is 1. Most electronic documents such as software manuals, hardware manuals and ebooks come in the pdf portable document format file format. Orifice meter also works on the same principle as that of venturimeter i. Use to study the flow through meter experiment lab product of the. This flow meter quickly and easily fits into place between the adaptors in the base unit of the flow meter calibration unit.
This means it can be viewed across multiple devices, regardless of the underlying operating system. One of the fun things about computers is playing with programs like paint. 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. An orifice meter is a differential pressure flow meter which reduces the flow area using an orifice plate. 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. A simple sharpedged orifice demonstration for the fluid. Introduction there are many different meters used to measure fluid flow. The pressure drop associated with each meter is measured directly from the manometers. Meter inlet and outlet sections in this wafer are sized for schedule 40 pipe. The scale attached to the side of the inlet tank has its zero level with the centre line of the side outlet boss. Also delete the flow venturi meter lab gradually due to conserve the product of a large volume of the flow of mechanical energy. By michelle rae uy 24 january 2020 knowing how to combine pdf files isnt reserved.
An orifice meter is another simple device used for measuring the discharge through a pipe. In this experiment an orifice plate flowmeter is calibrated and the calculated coefficient of discharge, cd, is compared to the given value in the lab report as well. Pdf calibration of flow meters lab report samson svondo. By employing the continuity equation and bernoullis principle, the volumetric flow rate through the orifice meter can be calculated as described previously for venturi meter. Pdf design and validation of a calibrated orifice meter for sub500. This article explains what pdfs are, how to open one, all the different ways. Pause the experiment after few cycles and note the observation. Find the time period of the pendulum by noting the time interval of any one complete cycle from the response graph. If the meter is installed in pipe where the schedule is. Pdf a 530 kgs orifice plate cooling water flow meter design. By far the most critical part of the meter is the orifice plate, particularly the widely used squareedged concentric plate, whose construction requirements are well documented in standards such as aga3 and iso 51671.
Rotameterfor the rotameter, record the position of the float, the pressure drop across the meter, and the measured flow rate. Pipe with an orifice flow meter, pump with flow control valve, manometer, weighing tank, stop watch. However this meter is relatively complex to construct and hence expensive. The orifice meter used in this experiment the following procedure was used to obtain the basic experimental data. Schematic diagram for venturimeter and orifice meter a. Differential pressure type flow meters head flow meters measure flow rate by introducing a constriction in the flow.
Orifice plate flow meter construction and working principle. The experiment is divided into three distinct parts. An experiment was conducted to explore the use of an orifice meter and. This study was initiated to resolve the disagreement. Its value varies slightly from one meter to another, and, even for a given meter it may vary slightly with the discharge, but usually lies within the range 0. The mass and volumetric flow rates did not differ by much, as seen on the graphs. It is typically made of carbon steel, and the main components of the device are. Pdf file or convert a pdf file to docx, jpg, or other file format.
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