Mechanical measuring instruments ppt


mechanical properties of soil bolometer: electromagnetic radiation Brannock Device: measuring shoe size breathalyzer: breath alcohol content caliper: distance calorimeter: heat of chemical reactions cathetometer: vertical distances ceilometer: height of a cloud base chronometer or clock: time clap-o-meter: volume of applause compass: direction of North colorimeter Pratt & Whitney Measurement Systems is a global supplier of ultra-precision metrology instruments, inspection gaging systems, and length measuring machines. 1 Introduction You have probably interacted with the various dials and meters on the dashboard of an automobile. The diagram on the opposite page shows diagrammatically the general arrangement for vibration measurements using an accelerometer. If you remain on this website without changing the cookie settings in your browser, you consent to the use of our cookies. 5. 3 specified four geometric arrangements for instruments used to measure color. 3. Measuring instruments have certain common errors built right into them, and the instruments most commonly used in machine shops are no exception. 2. One may be a gauge (Figure 22. Without feedback, the hot wire used in the instrument is accurate only for velocity fluctuations of frequency less than about 100 Hz. 13 Friction and Wear Measurement Techniques 13. PRINCIPLES OF MECHANICAL MEASURING INSTRUMENTS PowerPoint Presentation, PPT - DocSlides- For increasing the accuracy of direct observation methods, following mechanical means of magnification are adopted:. The best example of these errors is a person or operator reading pressure gage 1. • These basic instruments Here you can download the free lecture Notes of Metrology and Measurements Pdf Notes – MM Pdf Notes materials with multiple file links to download. This equipment also has settings for measuring frequency, a frequency-weighting network, and a display such as a meter, printer or recorder. 14. This may create significant measurement errors, depending on the system dynamics, and the size of the batch. measurement technologies in quality control purposes – teaching manual . One coulomb is approximately 1. The smallest λs available will be dependent on the data spacing available in the raw profile: for an instrument with 0. All the static performance characteristics are obtained by one form or another of a process called calibration. . Theoretical Guide to Measurement Uncertainty 4. Calibration of the measuring instrument is the process in which the readings obtained from the instrument are compared with the sub-standards in the laboratory at several points along the scale of the instrument. Naman M. 1. 1) or a light marked ALT or Generator or AMP. Measuring Instruments: Measuring Instruments Deflection and null type instruments Analog and digital instruments Active and passive instruments Automatic and manually operated instruments Contacting and non contacting instruments Absolute and secondary instruments Intelligent instruments. Mechanical Measurements and Metrology 2 Chapter Outline Interferometer Interferometry Optical flats Autocollimator Terminology of screw threads Measurement of major diameter, minor diameter, pitch, angle and effective diameter of screw threads by 2-wire and 3-wire methods, best size wire. Science and Reactor Fundamentals œ Instrumentation & Control 16 CNSC Technical Training Group Revision 1 œ January 2003 and DP cell readings. Secondary instruments are those which gives the value of the quantity on its scale or its display unit directly by a pointer. 7. value of the measuring instrument is compared with the The calibration of measuring instruments can . 5. However, accuracy ratio of 3:1 is acceptable by most standards organizations. is also measured with the measuring glass, and is added to the amount of precipitation in the storage bottle. Generally Mechanical measuring instrument used in laboratory. 6 Tribotests — Selected Examples 13. Travers Tool carries a variety of measuring equipment from standard to digital. The correct answer for sample 2 is “A”. Guide). , miscoding) It is the page of our precision measuring equipment. 4. This chapter provides an overview of both the software and hardware components of instruments and instrument systems. g. Basic Steps in Development of Instruments Development of Mathematical Model for Identification of Parameters to be measured. In 1. It is often the nameplate rating of the instrument. Lecture 1 Measurement. Electrical Measuring Instruments - Electrical Measuring Instruments Chapter 1: Principles of Meter Operations Electrical Systems Series 724. reason, most modern reflectance instruments measure a band of a certain bandwidth which may be 5-20nm in width. Gages, in contrast, are indirect-reading instruments. The Standard of Accuracy. It's also a great tool for homeowners to have on hand, as it instantly measures any distance for up to 50 feet. 2. 3 Elements of a measurement system 8 1. Alibaba. xvii Preface. If you need to use one, seek instruction (wrong use can damage them). Older mechanical balances with knobs are still in use. Inertial Measurement Units – IMU Ayman El-Fatatry BAE SYSTEMS – Advanced Technology Centre West Hanningfield Road Great Baddow, Chelmsford Essex CM2 8HN UNITED KINGDOM ABSTRACT It is recognised that Micro-Electro-Mechanical-Systems / MEMS will enable the development of new military capabilities. The calibration range is defined as “the region between the limits within which a quantity is measured, received or transmitted, expressed by stating the lower and Cable05. Mechanical comparator is a measuring instrument and the mechanism of this instrument is in the form of tape spring twisted, and that is positioned in the middle part. We measure using units of length. Example of notation in the catalog: 0. 1-01PP 724. of medical instruments/equipment by procurement agencies and health facilities. A basic instrument system consists of three elements: i SENSOR or INPUT DEVICE ii SIGNAL PROCESSOR iii RECEIVER or OUTPUT DEVICE This tutorial is devoted to input devices but you can never separate it from the rest of the system as in many cases they are all integral (e. At half scale defection. We have an array of different load cells available, including bending beam models, platform load cells for washdown applications, canisters, minibeam load cells, and more. Height gauges are electro-mechanical or mechanical metrology instruments that measure the dimension of machined parts from a datum reference--a surface plate, for example. To the instrument engineer or technician, calibration is the process of determining the relationship between the values of the quantity being measured and that indicated on a measuring instrument. 1. 1 mg (same as for total suspended solids) • Thermometer • Room temperature distilled water • A light weighing vessel for weighing sample replicates • Clean, unused pipette tips • Spreadsheet or printed form for recording and calculating pipette precision and accuracy For product-specific questions, search for the item on our site and then check under the "Instructions" tab for manuals and other pertinent information. It has a vertical circle or arc. It’s a useful tool for measuring thicknesses, inside diameters, outside diameters, and depth. Here the distance is measured with the help of electro-magnetic waves such as micro wave, infra red wave and other similar waves. Transits are used to measure horizontal and vertical angles. Basic classification of measuring instruments: 1. _____is the most popular type of measuring tool , usually 6 or 12 inches in length. Generic Uncertainty Budget . accurate temperature measurement. However, a DP sensor located in a hot and very humid room will tend to read high. x. Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. 1: see below Mechanical measuring connector Minimess® 1620 p/T. MECHANICAL MEASUREMENTS - PowerPoint PPT Presentation. Data processing reliability—manner in which data are handled (e. The article presents you all the substantial differences between validity and reliability. A wide variety of mechanical tachometer options are available to you, such as tachometer, oil gauge, and water temp gauge. A private collection of drawing instruments, slide rules and mechanical calculators, as well as a few microscopes and miscellaneous items. CLASS NOTES ON ELECTRICAL MEASUREMENTS & INSTRUMENTATION 2015 3 SYLLABUS ELECTRICAL MEASUREMENTS & INSTRUMENTATION (3-1-0) MODULE-I (10 HOURS) Measuring Instruments: Classification, Absolute and secondary instruments, indicating instruments, control of measuring parameters. The unit will give learners an understanding of a range of techniques and equipment commonly used in mechanical measurement and inspection. I can’t teach metrology in an hour. Identification of characteristics to be possessed by a general Instruments. Comparators are generally used for linear measurements, The world's best measuring instruments are all but worthless if they can't be relied on to provide accurate, reliable results. Proper use of precision measuring tools is one of the most important preconditions to ensure product quality. ) or on electrical or magnetic forces. PCE-DT 66 is a condition monitoring portable, digital, handheld tachometer, or rotation meter, that can take measurements of rotational speed. 3. This tool is one of the most famous measuring instruments in mechanical engineering. If cooling from above 720°C is rapid (e. After measurement, reset the storage bottle and the receptacle. Acknowledgements . Graduated Measuring instruments Together we can find the right measuring instruments for the task at a hand and a solution to all your measuring needs. Our flow measurement and instrumentation equipment includes Coriolis flow meters, thermal mass flow meters, vortex flow meters and more. some change in a physical characteristic. Care avoid unnecessary contact with hands clean with proper solvents handle and lay on lint free cloth don’t leave blocks rung for extended periods of time PPT Sponsored Links Displaying Powerpoint Presentation on Measuring Instruments Brent Payne available to view or download. When the ohmmeter terminals are shorted (Rx = 0) meter full scale defection occurs. Recording and Displaying Measuring Instruments 88 3. Instruments, therefore, are used to provide information about physiologic systems. DERIVED UNIT (OF MESUREMENT), unit of measurement of a derived quantity in a given system of quantities. 5 Evaluation of Wear Processes 13. , the law of motion, distortion of a spring or fluid dynamics, etc. Learners then move forward to learn coursework in Elements of Print Reading, Precision Measuring Instruments and Quality Control of Manufactured Products. 01-01 Fig. Equipments/Machines Quantity 1 Orifice and Mouthpiece Apparatus 1 2 Notch Tank Apparatus 1 3 Jet on Vane Apparatus 1 4 Combined Pipe Friction Measurement Apparatus 1 5 Venturimeter and Orificemeter Apparatus 1 In mechanical comparators, magnification is achieved by various mechanical devices and mechanical linkages. book Page 1 Wednesday, December 8, 2004 9:36 AM unit of measurement of a base quantity in a given system of quantities. Hughes • Process Control and Process Control Loops • Fundamentals • Temperature and Pressure Measurement • Level Measurement and Control • Analytical and Flow Measurement Taken from Measurement and Control Basics, Third Edition Mechanical float type level measurement devices. Having been trained to deal with mechanical systems, the use of electrical or electronic system to make measurements on these mechanical systems are far from obvious. Introduction to the Study of Mechanical Measurement; Errors in Mass Flow Rate of Fluid; Flow Measuring Devices; Measurement of Stagnation and Bulk Mean  cantly perturb the pressure, and most instruments are sensitive to the gas sophisticated, can be used to enhance the mechanical measurements required. The unit of charge measurement is coulomb (symbol C), after Charles Augustin de Coulomb. Each measuring instrument serves a specific purpose for the person who is using it. In providing such information the instrument is carrying out an indicating function. List of Equipments/Machines Mechanical Engineering Department Fluid Mechanics and Hydraulic Machines Lab Sr. Optical comparators are among the easiest measurement instruments to use. vibration-measuring instrumentation, one of the most sensitive vibration detectors is the human touch Fingertips – sinusoidal vibrations having amplitudes as low as 12 µ in Vibrating member tightly gripped – average minimum detectable amplitude was only slightly greater than 1 µ in Greatest sensitivity occurred at a frequency of about 300 Hz 5 Measurement Tools Every Workshop Needs. Moritz GSI, Darmstadt, Germany Abstract Mechanical equipment is an integral part of each magnetic measurement. Similarly a simple U tube Manometer permits measurement of differential pressure between two stations. 1 Strong Characteristics: A solid, prismatic component with a good surface finish A straightforward measurement (e. Mechanical Comparator; Pneumatic comparator; Optical comparator  Calibrate hydraulic, pneumatic and mechanical measuring and electrical, electronic measuring and control instruments using (PowerPoint, Trainer. They are usually available in the measuring scale of inch or cm. 10 Very Mild Wear TRAINING MATERIAL ON METROLOGY AND CALIBRATION SYLLABUS 1. Vibration measurement instruments and vibration analyzers can accept a number of different types of transducers, including acceleration, linear velocity, proximity and displacement, rotary velocity, and temperature. Electrical Measuring Instruments Chapter 1: Principles of Meter Operations Electrical Systems Series 724. The disadvantage is they are unable to respond rapidly to measurement of dynamic and transient conditions. Measurements taken are accurate to the finest gradation of the selected measuring instruments. The instrument range refers to the capability of the instrument. The moving iron meters 81 3. Rx = R1 + Rm, and at zero defection the terminals are open-circuited. Digital instrument; The instrument which gives output that varies continuously as quantity to be measured is known as analog instrument. The cali- List of measuring devices. A flow of gas (usually air) passes through the tube and when air bubbles escape from the open end, the air pressure in the tube corresponds to the hydraulic head of the liquid in the vessel. Download Presentation PRINCIPLES OF MECHANICAL MEASURING INSTRUMENTS An Image/Link below is provided (as is) to download presentation. Deflection Type Instruments. The world's best measuring instruments are all but worthless if they can't be relied on to provide accurate, reliable results. The calibration of an instrument can be carried out by comparing the readings on the instrument with those given by a reference instrument or calibrator. The moving coil meters 74 3. In Metrology, Linear measurement applies to the measurement of lengths, diameters, heights and thickness including external and internal measurements. Maximum capacity of balance is usually shown on the The arrow is pointing to a location on the rule indicating 14”. 302 ME Lab I. 1 Measurement units 3 1. In practice, it is more usual to quote the inaccuracy. In a thermocouple, the measured signal is an E. 1 Active and passive instruments 12 2. Errors of measurement. 2 Measurement system applications 6 1. Read in another language Watch this page Edit Device Quantity mechanical properties of soil bolometer: electromagnetic radiation Misuse of the instruments results in the failure to the zero adjustment of the instruments. march 2014 . All that I had known before was measuring with a ruler, with precision down to maybe a 1/16th, or maybe a 1/32nd of an inch. The electrical system normally depends upon a mechanical meter movement as indicating device. This article describes the process for developing and testing questionnaires and posits five sequential steps involved in developing and testing a questionnaire: research background, questionnaire conceptualization, format and data analysis, and establishing validity and reliability. What is EDM? To simplify the procedures to obtain accuracy in surveying, the electronic distance measuring method was introduced. version 1. Electrical Resistance Strain Gage Assuming small changes in resistance to changes in the resistivity, length, and area, a relationship referred to as the Gage Factor can be developed as + + υ ε ρ ρ = ε = = = 1 2 dR /R d / dL/L dR /R S gage factor a a G. The accelerometer produces an electrical signal. 5 %. 1-1. 6 shows the time-temperature-transformation (TTT) phase diagram of eutectoid carbon steel. Hold the part (whose dimension is to be measured) and micrometer properly. Mechanical  3 Apr 2019 Thus, the errors in measurement are not only due to error in on industrial instruments so that the error in measurement can be reduced. 707 of the low frequency response is used. 1 Review of instrument types 12 2. Scales and Balances Scales and balances are used for yet another kind of measurement -- the measurement of an object’s weight. Linear Measuring Devices and Comparators. If the smallest unit in the main scale be 0. Usually, lower readings are a result of the lower available pressure of the substance. In addition, many vibration instruments can take generic signal inputs, including voltage, current, frequency, and serial inputs. 9 Wear in Sliding and Rolling Contacts 13. PHYSICAL METHODS, INSTRUMENTS AND MEASUREMENTS - Measurements Of Electrical Quantities - Ján Šaliga ©Encyclopedia of Life Support Systems (EOLSS) where q is the charge and t the time. Buy online or contact us about our metrology offerings. A measurement instrument gives an estimate of the value of a physical  Mechanical Measurements. Calibration is a comparison between a known measurement (the standard) and the measurement using your instrument. Actual Value Measured value Accuracy and Precision Experiment 1 Abstract Questionnaires are the most widely used data collection methods in educational and evaluation research. There are a few measuring instruments that are more commonly seen than others. Metrology of Pressure 7. a mechanical pressure gauge incorporates all of these elements). g Accuracy is the capacity of a measuring instrument to give RESULTS close to the TRUE VALUE of the measured quantity n Accuracy is related to the bias of a set of measurements n (IN)Accuracy is measured by the absolute and relative errors g More on errors in a later slide g Discrimination is the minimal change of the input necessary to Dimensional Metrology Group . xix Here we will look at the features and use of certain well known precision measuring instruments used for linear measurement. Taper Measuring Instruments. The precision of a set of measurements can be determined by calculating the standard deviation for a set of data where n-1 is the degrees of freedom of the system. They are two different things. Analog instrument Digital instrument; The instrument which gives output that varies continuously as quantity to be measured is known as analog instrument. Total stations incorporate EDMs as well as provisions for angular measurements and basic coordinate geometry (COGO). In order to minimize the gross errors in measurement various correction factors must be applied and in extreme condition instrument must be re-calibrated carefully. • Devices used in measurement system . The ammeter, voltmeter, wattmeter are the examples of the electrical measuring instrument. One key to ensuring that measuring instruments, such as micrometers, calipers and dial gauges, maintain a high level of reliability and accuracy is by taking proper care of them. If the material being evaluated INSTRUMENTATION AND CONTROL TUTORIAL 2 – SENSORS AND PRIMARY TRANSDUCERS This tutorialprovides an overview of instrument sensors used in process and automatic control. In mechanical comparators, magnification is achieved by various mechanical devices and mechanical linkages. Examples of measuring instruments include steel rules or scales, vernier calipers, micrometers, and height stands. I thought that was pretty cool. represents a measurement and n is the number of measurements. Measuring & Inspection Tools. A measurement is a comparison to a standard. Gear Tooth thickness measurement 1. Present-day applications of measuring instruments can be classi- fied into Devices like the mechanical flyball (a device for measuring rotational velocity) suffer Parts per billion (ppb) and parts per trillion (ppt) measurements are also. For more information, see our data protection statement. Drafting tools may be used for measurement and layout of drawings, or to improve the consistency and speed of creation of standard drawing elements. Standard . 8 Erosive Wear 13. 3) Thermal Expansion . com offers 475 mechanical tachometer products. This simple level measurement has a dip tube installed with the open end close to the bottom of the process vessel. At the top of the Starret… Hardness & Surface Roughness Testers Surface Texture and Contour Measuring Instruments; Roundness and Cylindrical Profile Measuring Instruments; Optical Measuring Instruments; In process gauge・Post process gauge; Various Sensors and Electric / Air Micrometers; High Precisions Digital Measurement Instrument; Built-in Measuring Instruments; Customer Support(Multipurpose measuring Sumit Thakur Mechanical Transducer Seminar and PPT with PDF Report: In the direct method any physical quantity like duration, mass, etc are calculated directly by some instruments like the measuring tape, weighing scale etc. Set the zero reading of the instrument before measuring. Then turn the thimble with the forefinger and thumb till the measuring tip just Handling instruments Instruments are placed firmly into the surgeon’s palm in such a manner that it is ready of immediate use. Please refer this file just as reference material.  0. 1) Gross Errors. Transducer Seminar PPT with PDF Report What are transducers? Measuring Length You can measure the length of ANYTHING! When we measure length we measure how long something is. A PRT sensing element is often used in remote instruments, but, because the resistance per unit Chapter 3 Reading Measuring Scales Reading the Scale of a Rule or Tape - Continued - 14256_20 Reading the Scale of a Rule or Tape - Continued - 14256_21 Chapter 4 Tool Boxes Types and Uses - 14256_24 Chapter 5 Dividers Types and Uses - 14256_26 Using a Divider to Scribe a Circle How to Choose and Use Them - 14256_29 Types and Uses - 14256_30 Instrument reliability—the research instrument or measurement approach itself (e. The instrument which gives output that varies in discrete steps and only has finite number of values is known as digital instrument. ) 2) Thermojunctive (thermocouples) 3) Thermoresistive (RTDs and thermistors) Types of Electrical Measuring Instruments 5/29/2013 10:56:39 AM | by Anonymous Electrical measuring instruments , from the name itself, refer to devices used for measuring various electrical aspects such as the presence and amount of current, voltage, resistance and power through installation. 1 Electromechanical instruments versus digital measuring systems 73 3. • Span is the difference between maximum value and the minimum value that the instrument is designed to measure • Example: 0-20 V Range -- Span is 20 25c – 100 c Range – Span is 75c Linearity • It is highly desirable that the measurement system has a linear relationship between input and output means that the change in output is proportional to the change in the value of the measurand . Angle Measuring Instruments I Universal Bevel Protractor 1) It is an angular measuring instrument capable of measuring angles to within 5 min 2) The name universal refers to the capacity of the instrument to be adaptable to a great variety of work con gurations and angular interrelations. Magnification: The magnification of optical comparator is defined as “the ratio between distance moved by the indicating pointer (beam) and the displacement of plunger”. figure rather than the accuracy figure for an instrument. Faces of both anvil and spindle which are opposite to each other are the measuring points of micrometer and hold the measuring object collectively. 1 PowerPoint Masters 720724. Coordinate measuring machine, Surface texture and contour measuring instrument, Roundness and cylindrical profile measuring instrument, Machine control gauge, Air/electric micrometer, High precision digital measuring instrument, Laser interferometer/Built-in measuring instrument/Automatic measuring systems. In Metrology, The comparator is a Precision Instrument, which is used to compare the dimensions of the given component with the actual working standard. Measurand is a particular quantity subject to measurement. Vocabulary used in Metrology 2. •The actual physical assembly may not appear to be so but it can be broken down into a representative diagram of connected blocks. First-stage element used as detector only. Pre-test: _____is a measuring tool used to layout an angle or an arc. To view this . Measurement is an important part of science, construction, art, design and a wide array of other professional fields. A typical vibration measurement system includes a device to sense the vibration (accelerometer), and an instrument to measure the level of vibration. 5 mm = 0. 075 mm. Start studying Medical Terminology Instruments + Machines. 01N/m2 as 1. Measuring Instruments A Lesson in the “Math + Fun!” Series About This Presentation We Need to Measure Many Different Things Temperature Measurement A Second Way for Measuring Temperature Measuring Speed Measuring Electrical Voltage Activity 1: Making a Scale with a Rubber Band Activity 2: Making a Scale with a Coil Spring Selecting Suitable Instruments for Measurement Measuring Very Large Instruments and recordings could also be used for trouble shooting. 0005”. 10N/m2. Introduction to Mechanical Measurement 1. It is only used for one purpose; To measure propeller stern shaft clearance, also known as propeller wear down. To find the total uncertainty, the tolerance of the shunt and the reading uncertainty of the measuring instrument are added in quadrature: [equ. the sound level meter). Using measurement instruments from Fischer, you can determine these important While measuring cups use measurements like tablespoons, teaspoons and cups, beakers and graduated cylinders use the metric system and measure in milliliters and liters. Chart and Diagram Slides for PowerPoint - Beautifully designed chart and diagram s for PowerPoint with visually stunning graphics and animation effects. Confirm your parts meet the customer's specifications with Travers Tool's instruments such as calipers, micrometers, angle gages, bore gages, chamfer gages, depth gage calipers, gage balls and blocks, height gages and accessories, hole gages and more. The Magnification of optical comparators is usually 1000:1, with measuring range of plus and minus 0. Mechanical instruments:-They are very reliable for static and stable conditions. Calibrate the instruments State the applications, important features and limitations of various measuring instruments UNIT-I (12 Lectures) The sensitivity of measurement is a measure of the change in instrument output that occurs when the quantity being measured changes by a given amount. The ammeter measures the current in amps; voltmeter measures voltage and Wattmeter are used for measuring the power. Measuring instruments ppt 1. Metrology organization in Météo-France directly but is often derived from a measurement of acceleration, and may also be derived from measuring displacement with respect to time, as below. 1 The Importance of Testing in Tribology 13. Gross errors are caused by mistake in using instruments or meters, calculating measurement and recording data results. If gage setting and calibration is important to you, choose the Labmicrometer Model 900 or 1600 measuring system. A measured signal is normally produced by the primary element (sensing element) of an instrument. There are hundreds of measurement tools. Academic quality assurance and quality control concepts include process variation analytics, statistical principles of normal distribution and probability, and acceptance sampling for How to Maintain a Precision Measuring Tool. The student will learn to interpret readings on and take measurements with the instruments. 001 - 19. Induction type watt-hour meters 86 3. precision measuring instruments: the vernier caliper, the outside micrometer, and the depth micrometer. 1(9) measurement. •Gear tooth thickness varies from the tip of the base circle of the tooth, and the instrument is capable of measuring the thickness at a specified position on the tooth. This laser measure from Bosch also features a continuous measurement feature that provides instant real-time results no matter where you point it. 2 Null-type and deflection-type instruments 13 The ISO recommendation is to use a bandwidth of 300:1 wherever possible. Mechanical Engineering - 22. Taper measuring instruments are used for the measuring slope type of surfaces on the components. Accuracy  Mechanical Metrology – Realises , maintains and disseminates the national Volume measuring instruments : verification of fuel dispensers, tankers , meters  These encoders are widely used in a variety of measuring instruments as the length . There are four basic types of temperature measuring devices, each of which uses a different principle: 1) Mechanical (liquid-in-glass thermometers, bimetallic strips, bulb & capillary, pressure type etc. Thus, sensitivity is the ratio: The sensitivity of measurement is therefore the slope of the straight line drawn on Fig. There may be a potential problem installing swirlmeters on existing processes where the flow range to be measured is completely unknown. As per the results obtained from the readings obtained of the instrument and the sub-standards, the curve is plotted. Measuring techniques used are correct and appropriate to the instrument used. The static characteristics of an instrument are, in general, considered for instruments which are used to measure an unvarying process condition. • Metre rule is made up of different materials and in a wide range of size. , a. c. Instruments of this type are referred to as abridged spectrophotometers. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Measuring instruments ppt. Electrical instruments:-Electrical methods of indicating the output of detectors are more rapid than mechanical methods. 3 Mechanical, Electrical and Electronics Instruments. 1) Long Term Reproducibility . 2 Wear or Surface Damage 13. Disassemble instruments and equipment using hand tools and inspect components for defects. Is the electrical, mechanical, pneumatic, or other variable applied to the input of a device. , thermometers, barometers, and water, gas, and electric meters, automotive speedometer and fuel gage, and compass. When a deflecting force is applied to the moving system, it deflects and it should come to rest at a position where the deflecting force is balanced by the controlling force. Products can be purchased via either the online shop, over the phone, via fax or by post. This page contains Transducer Seminar and PPT with PDF report. 025 mm To read a measurement from a vernier caliper, first the main scale reading up to the zero of the vernier scale is noted down. Sumit Thakur Mechanical Transducer Seminar and PPT with PDF Report: In the direct method any physical quantity like duration, mass, etc are calculated directly by some instruments like the measuring tape, weighing scale etc. A typical general purpose acceler- ometer is linear up to 50000 to 100 000 m/s2, that is well into the range of mechanical shocks. 7 Abrasive Wear 13. The middle part of the mechanical comparator rotates through a fixed angle upon tension which is shown in the figure. 25um data spacing, the smallest λs that can be represented is 1. Instruments used for Linear Measurement: Linear measurement instruments can be classified into Direct and indirect measuring instruments. Willrich provides an extensive range of measurement products and gages for all your inspection needs. Mechanical temperature measurement The mechanical temperature measuring instruments work on the bimetal, expansion or gas actuation principle and cover scale ranges from -200 … +700 °C. Instrument resolution (random) - All instruments have finite precision that limits the ability to resolve small measurement differences. Never confuse the instrument range with the calibration range. It is provided with inward jaws and outward jaws to facilitate the measurement. (2) Methods of Observation When performing observation, remove the receptacle, take out the storage bottle and pour the rainwater in the bottle into the measuring glass. 1 Introduction. 22 Feb 2019 Below, we have compiled a list of mechanical measuring instruments and mechanical gauges which are extensively used on the ship for the  Instrumentation is a collective term for measuring instruments that are used for indicating, The transformation of instrumentation from mechanical pneumatic  Measurement and Instrumentation. Among the variety of instruments that are available to measure angles and elevations, it is important to choose the best one that is more suitable for the specific job. 602176487×1019 of elementary charges separated from the instrument. Level measurement WIKA has a comprehensive range of level measuring in- Electrical Instrument; Electronic Instrument; Mechanical Instrument; The mechanical instrument uses for measuring the physical quantities. MEASURING INSTRUMENTS • Measuring instruments are used to measure physical quantities. With their sophisticated mechanical probes, they provide a practical solution for measuring complex shapes in a large number of tasks. Curved instruments are passed with the curve in the direction of intended use. More concentration should on class room work and text book methodology. 4] In this example, the total reading uncertainty is 2. Calibrations of accelerometers are necessary in acceleration, vibration, and shock sensing. Measuring with a shunt resistor. 4. considered, we will certainly want to classify them as biomedical instruments, although their function is only a small extension of that of the speculum or retractor described above. F, which is the electrical analogue of the temperature applied to the thermocouple. In the laboratory environment with a good temperature controlled resistance bridge with mercury wetted contacts and a polarity reversing switch, the temperature can be measured to 0. Align, repair, replace and balance • Span is the difference between maximum value and the minimum value that the instrument is designed to measure • Example: 0-20 V Range -- Span is 20 25c – 100 c Range – Span is 75c Linearity • It is highly desirable that the measurement system has a linear relationship between input and output means that the change in output is balance capable of measuring down to 0. Quills were made of hollow bird feathers, most commonly goose feathers. Devices. Confirm your part's design with Travers Tool's hand-held and simple gages such as angle gages, bore gages, chamfer gages, depth gage calipers, gage balls and blocks, height gages and accessories, hole gages, micrometers, and more. Angular measuring instruments are used for measuring the degree maintain surfaces. Metrology of Humidity 6. Types, properties, uses and details of these surveying equipment is discussed. provides a range of flow instrumentation options to meet the requirements various industry applications. The laser measure has become a go-to-tool for designers, architects, and contractors. Data collection is an increasingly important part of manufacturing, and one of the main drivers in the movement toward electronic measuring tools with output. The aim of this unit is to provide a broad understanding of mechanical measurement and inspection techniques that apply to a range of engineering activities within different companies. Primary Areas of Float Sensor Application: In view of the requirements pertaining to the increase in usage of sealed tanks, the current industrial systems make use of this type of float method for precise reading and accuracy, which is a good example of electronics and mechanical engineering, making it the most accurate level-measuring system 22 Aug 2015 This presentation by Hooria Shahzad is about measuring instruments in which we study metre rule, measuring tape, vernier callipers and screw  9 May 2017 Need of mechanical measurement Basic definitions: Hysteresis Linearity Resolution of measuring instruments Threshold Drift  Presentation on theme: "Measuring Instruments"— Presentation transcript: . It responds to sound pressure and transforms it into an electric signal which can be interpreted by the measuring instrument (e. They can be a single steel plate or a flexible tape type tool. 4 Mechanical Testing of Engineering Materials Figure 1. Active or Modulating Instrument: an instrument has an auxiliary of power which supplies a major part of the output power while the input signal supplies only an insignificant portion. : The instrument which gives output that varies in discrete steps and only has finite number of values is known as digital instrument. (Mechanical Dept. It’s not necessary to comprehend the precise physics or geometry underlying the Repair electrical, mechanical, electromechanical, and electronic measuring, recording, and indicating instruments and equipment for conformance to established standards and assist in formulating calibration standards. Metrology of Temperature 5. Taper micrometer; Tool room microscope Bevel Protractor Sine bar and dial gauge; Autocollimators; Slip gauges, Rollers and micrometer; Angular Measuring Instruments. Electrical instruments:-Electrical methods of indicating the output of detectors are more rapid than Basic series ohmmeter consisting of a PMMC and a series-connected standard resistor (R1). The precision of a measurement is a measure of the reproducibility of a set of measurements. As the level fluctuates, the switch opens and closes accordingly. Many times, the instrument engineer makes an educated guess on flow range. 6. By redesigning the instrument to use feedback, this limit is extended to about 30,000 Hz, making the instrument much more useful. These are (a) 0/45 (b) 45/0 (c) 0/Diffuse and (d) Diffuse/0 as shown in Fig 5. DYNAMIC mechanical analysis (DMA)-is a thermal analysis technique that measures the properties of materials as they are deformed under periodic stress. Many machine maintenance technicians use vibration meter devices in tandem with sound level meters to analyze frequency. Class I. It introduces the principles of electronic instrumentation, the basic building blocks of instruments, and the way that software ties these blocks together to create a solution. In less than two hours, users with only a minimal amount of gaging experience can make accurate measurements using these devices. E-learning Course for Mechanical Instrument Calibration Training - Learn actual calibration of mechanical instruments like Vacuum Gauge, Pressure Gauge, Weighing Balance, Weight, Tachometer, etc. Measuring instruments and devices. The accuracy of digital instrument is more. term measuring instrument is commonly used to describe a measurement system. Measurement and Control Basics, 3rd Edition Thomas A. What is vernier height gauge? In the many of industrial jobs where some measurement is required we may face different nature of values for measuring like depth, breath, height and length so we may need special type of instrument for each of these measuring values. Static and Dynamic Characteristics •Instrument systems are usually built up from a serial linkage of distinguishable building blocks. Stationary . MultiBox and MultiHandy measuring instruments. electric supply Thus the fluctuation in voltage or frequency may affect the accuracy of measurement. A vibration meter is used in manufacturing for machine condition monitoring, product testing and quality assurance. NPTEL provides E-learning through online Web and Video courses various streams. • Scientists, engineers and other humans use a vast range of instruments to perform their measurements. We know deflecting torque, controlling torque and damping torque are present in measuring instruments. Poker gauge is one unique tool among different types of measuring instruments is available in mechanical or digital form on ships. The value of the quantity can be measured by measuring the net deflection of the pointer from its initial position. of units. This The aim of this unit is to provide a broad understanding of mechanical measurement and inspection techniques that apply to a range of engineering activities within different companies. The microphone is the interface between the acoustic field and the measuring system. A vibration meter also can be used in civil engineering to me Branom Instrument Co. input output System Self-generating Measurement System input output System Modulating Measurement System External power Here we will look at the features and use of certain well known precision measuring instruments used for linear measurement. May 2005 SURVEYING EQUIPMENT, MEASUREMENTS AND ERRORS 3. NOTE: In any given coherent system of units there is only one base unit for each base quantity. 0 Mechanical Measurement Systems Measurement of mechanical systems has long been an issue for engineers. Contents Acknowledgement . signal through any measuring system Often when a simple sine-wave voltage is amplified by a single stage of amplification, the output trails the input by approximately 180ꉘ, or one-half cycle. Linearity, Resolution of measuring instruments, Threshold, Drift,. e. 99cm/s o-p v = ds/dt = d (D sin wt) / dt Merit of velocity measurement Velocity is a parameter widely used for equipment diagnosis and Measurement of Force Mechanical weighing systems Balance, multiple-lever system, pendulum force-measuring mechanism Elastic transducers Proving ring Strain-gage load cells Piezoelectric-type load cells Hydraulic and pneumatic systems Gear Measurement 6. The output of the accelerometer is an AC waveform that exactly reproduces the vibration acceleration. Lock nut: As we know the mechanism of micrometer based on precision ground threads of spindle so the lock nut works as stationary nut for this mechanism, so rotation of this mechanism into lock nut controls the spindle movement. ) Gandhinagar Institute of Technology 2. Metrology and Measurements Notes Pdf – MM Notes Pdf book starts with the topics Range of measurement,Resolutio n, Progressive erro, Drunken error, Periodic error, Irregular errors,Using taper Chapter 22- Basic Electrical Measurements 479 Chapter 22 Basic Electrical Measurements 22. To maintain the accuracy and reliability of a precision measuring tool, one has to do Resistance, voltage, mechanical deflection, rotation rate Extracts energy from the measured medium and adds noise to the signal Perfect measurement is impossible! ATMS 320 – Fall 2019 Instrument Sensor + any other required transducers and a data display element Example: Is a mercury-in-glass thermometer a sensor or an instrument? • Span is the difference between maximum value and the minimum value that the instrument is designed to measure • Example: 0-20 V Range -- Span is 20 25c – 100 c Range – Span is 75c Linearity • It is highly desirable that the measurement system has a linear relationship between input and output means that the change in output is A private collection of drawing instruments, slide rules and mechanical calculators, as well as a few microscopes and miscellaneous items. Cookie Policy This website uses cookies. Our new CrystalGraphics Chart and Diagram Slides for PowerPoint is a collection of over 1000 impressively designed data-driven chart and editable diagram s guaranteed to impress any audience. • Measurement ( also called metrology) is the science of determining values of physical Instrumentation. Seminar Topics for Mechanical Engineering with ppt (2019): Mechanical Engineers are always busy in doing different operation on their machines. Gear tooth vernier caliper method •In gear tooth vernier method the thickness is measured at the pitch line. It is also hoped that this catalogue can serve as a useful teaching aid for health personnel training institutions. Clean the measuring faces of the anvil a spindle with a clean piece of paper or cloth. The upper limit is determined by the accelerometer's structural strength. No. Many of these instruments are still in occasional use in my workshop, where I build model steam engines, whilst others are purely part of my collection. Care is needed when taking a reading from a mechanical micrometer. The scale is calibrated by comparison with absolute instruments. They are used to measure lengths and other geometrical parameters. A frequently used, simple instrument for measuring displacements is the mechanical dial gauge with ranges from 5 to 50 mm and an accuracy of from 1 to 20 >< l0~mm. xix 1. Electrical instruments:-Electrical methods of indicating the output of detectors are more rapid than There are various surveying instruments for measurement of angles and elevations. When you are going to measure a non-cognitive variable, for instance employees motivation, so motivation scale by using 5–4–3–2–1 (always,often, sometime,seldom/rare and never), is more preferable. Our comparator instruments incorporate the latest in laser and sensor technology allowing for fast and accurate measurements. Validity of the measuring instrument represents the degree to which the scale measures what it is expected to measure. 000,1 °C repeatably. CMMs might also be placed in this category. Equipments/Machines Quantity 1 Orifice and Mouthpiece Apparatus 1 2 Notch Tank Apparatus 1 3 Jet on Vane Apparatus 1 4 Combined Pipe Friction Measurement Apparatus 1 5 Venturimeter and Orificemeter Apparatus 1 How to Maintain a Precision Measuring Tool. The result generated by "measuring" is the actual dimension of the workpiece feature. 3 Indicating instruments Technical drawing tools include and are not limited to: pens, rulers, compasses, protractors and drawing utilities. Looking for measuring equipment? You'll find all the measuring and inspection equipment you need, both standard and digital. The ordinary Voltmeter, Ammeter, Energy meter are examples for Secondary instruments 2. 1 Geometry and loading scenarios commonly employed in mechanical testing of materials. 7) Artifact Effects . the diameter of a hole or length of a cylinder) There are no accessibility issues associated with the measurement Three thousandths of an inch thick. Tool maker's microscope, Coordinate measuring machines (CMMs) play an important role in a number of industries as functional, fast, accurate, reliable and economic measuring and inspection instruments. If they get direct Seminar Topics for Mechanical Engineering with ppt and report then this can help them a lot in building more powerful machines. A good pair of callipers can measure within . The accuracy of analog instrument is less. If the material being evaluated This limit is normally as low as one hundredth of a m/s2 with general purpose instru- ments. Electrodynamic meters wattmeters 82 3. 5) Scale Calibration . Measurement is the process or the result of determining the magnitude of a quantity, such as length or mass, relative to a unit of measurement, such as a meter or a kilogram. Pressure Measurements • One bar Atmospheric pressure corresponds to 760 mm column of mercury & is most accurate measurement one can have. 3 Classification of Tribotests 13. 1 Overall Vibration Values. measuring instruments were developed in parallel with the development of electrical engineering. , poorly worded questions, quirk in mechanical device) 5. Direct measuring instruments. For two stages, the shift may be 360ꉘ Characteristics of Instruments P M V Subbarao Professor Mechanical Engineering Department A Step Towards Design of Instruments…. For a mechanical engineer to properly select and utilize In a measuring instrument, magnification may be either mechanical, electrical, electronic, optical, pneumatic principle or a combination of these. 1 Mechanical Measurement: Need of mechanical measurement, Basic definitions : Hysteresis,. For example an instrument nameplate rating may read: Instrument range 0 -800psig; Output 4 to 20mA. MECHANICAL EQUIPMENT G. • It is one metre long which is equal to 100 centimetres and each centimetre is divided into 10 small divisions called millimetre (mm). mechanical pressure measuring instruments,. Apply the principles of measurement to engineering situations Course Outcomes: Student will be able to Identify appropriate instrument for measurement of specific parameter. Measurement Statistics 3. CHAPTER 1 Mechanical Measurement Presentation Prepared by Prof. The measurement units live not on mechanical or electrical, depending on whether the restoring force or other measuring mechanism is based on mechanical properties, (e. A part requiring measurement can be grouped according to the strength of its characteristics: 2. 5060C-ppT- xx1-xx1. The specified tolerance of the shunt resistor refers to the reading uncertainty. Measuring Vibration. The proper care, storage, and handling of these instruments will be discussed. All thermometers are suited for operation in a thermowell if necessary. The catalogue is divided in to thirteen sections based on the areas of use of the instruments/equipment or departments. It is a type of depth measuring instrument, whose reading indicates the wear down of the stern shaft. M. a) tension, b) compression, c) indentation hardness, d) cantilever flexure, e) three-point flexure, f) four-point flexure and g) torsion Equipment used for mechanical testing range from simple, hand-actuated devices mechanical parts are enclosed in an alidade section along with 3 leveling screws contained in a detachable base or tribrach. ,  Background on measuring of mechanical devices with digitizers using transducer where the half power point or 0. To maintain the accuracy and reliability of a precision measuring tool, one has to do Study of DC-AC Measuring Instruments (Part - 1) notes for Electrical Engineering (EE) is made by best teachers who have written some of the best books of Electrical Engineering (EE). 4) Elastic Deformation . However, some physical laws were derived based on measurement results, such as the Biot-Savart law, when in 1820, the French scientists Jean-Baptiste Biot and Félix Savart established the relation- a device for measuring rapidly varying fluid velocity. It compares the unknown length with the standard. A Transit is a surveying instrument having a horizontal circle divided into degrees, minutes, and seconds. After converting this measurement to feet and inches, the correct answer for Sample 1 is alternative “C”. Ringed instruments are handed with the box locks closed. Since 14” is equal to 1’ and 2”, the measure for Sample 1 is 1’ 2”. A float is connected with a rod that is mounted to a tank wall and linked to a switch. About 8% of these are auto meter, 6% are machinery engine parts, and 4% are speed measuring instruments. Omega’s load cells are compact, rugged, and constructed with the highest quality alloy steel. The The significant figures displayed on an instrument are an indication of the precision of the instrument. Indicating Measuring Instruments 73 3. METRE RULE: • A metre rule is used to measure length of an object or distance between two points. For a mechanical engineer to properly select and utilize Manufacturer of Mechanical Measuring Instruments - Vernier Caliper, Vernier Depth Gauge, Bevel Angle Protractor and Thread Pitch Gauge offered by Neno Technical Services, Noida, Uttar Pradesh. Carrying out fault location on mechanical equipment SEMEMI2-05 Carrying out fault location on mechanical equipment 2 Performance criteria You must be able to: P1 work safely at all times, complying with health and safety and other relevant regulations and guidelines P2 review and use all relevant information on the symptoms and problems TYPES OF RESEARCH INSTRUMENTS. Typically, the accuracy of the standard should be ten times the accuracy of the measuring device being tested. One key to ensuring that measuring   EFD labs provide “hands on” experience with modern measurement systems, the pressure sensed by the instrument probe into mechanical or electrical  The selection of measuring instruments depends on the measurement to be performed. In these types of instruments, pointer of the electrical measuring instrument deflects to measure the quantity. 25um. Operating and maintenance procedures are covered in the manuals supplied with each instrument. Laboratory Balances: Measuring Mass Scientists usually refer to a “balance” not “scale” Most are now electronic, with digital readout and few moving parts. These instruments usually more expensive than the mechanical comparators. For instance, a meter stick cannot distinguish distances to a Popular mechanical gauges and tools used on ships are: Ruler and scales. 5 mm, the least count of the vernier scale is, =. The electronic instrument has quick response time. Class II. The instrument provides the quick response as compared to the electrical and mechanical instrument. Page ▫ 20. In this contribution the importance of mechanical tolerances is demonstrated with some examples and the principal rules in order to reduce the influence of mechanical errors are discussed. The electrical instrument is used for measuring electrical quantities likes current, voltage, power, etc. It is useful to anyone studying measurement systems and instrumentation but it is provided mainly in support of the EC module D227 – Control System Engineering. 4 Tribotest Planning 13. 6) Instrument Geometry . 602176487×1019 of elementary charges Chapter 22- Basic Electrical Measurements 479 Chapter 22 Basic Electrical Measurements 22. Such measurement is known as comparison measurement and the instrument, which provides such comparison, is called a comparator. basics of metrology, standards and calculate least count of measuring instruments. – Certain applications of measuring instruments may be characterized as having essentially a monitoring function, e. This condition monitoring handheld tachometer features mechanical attachments and is ideal for measuring rotational speeds of machines, motors, conveyor belts and other moving parts. 0 Typically, calibration of an instrument is checked at several points throughout the calibration range of the instrument. A height gauge generally consists of a rigid column mounted to flat base with a measuring head that displays height from the bottom of the base on a dial, vernier, or digital display. This instrument is suitable for measuring the static and stable condition because the instrument is unable to give the response to the dynamic condition. Specifically, in DMA a variable sinusoidal stress is applied, and the resultant sinusoidal strain is measured. For example length, width , depth , height , temperature , density etc. 13 Jul 2016 Find you why calibration of your measuring instruments on a regular or mechanical shock or a hazardous manufacturing environment (e. mechanical energy. The best instrument cannot give a result better than the output from the microphone. This is perhaps the most simple, inexpensive and simple to install method. A Brief History Of Writing Instruments The quill fueled most written communication from the 6th to the 19th century. It is not same as reliability, which refers to the degree to which measurement produces consistent outcomes. Figure 5. • Measuring instruments: METRE RULE MEASURING TAPE VERNIER CALLIPERS SCREW GUAGE 2. , less than 5 s), the material does not have enough time to go through equilibrium phase transformation. Dynamic Characteristics of Instruments and Measuring Systems 2103-602 Measurement and Instrumentation Introduction Instruments and measuring system do not respond to the change of input instantly. 20 1. (ii) External Power Source: These instruments require an external agency to operate i. Vernier Caliper: It is an instrument used to measure internal and external dimensions of an object with a great accuracy. As the reciprocal value of electrical resistance, conductivity not only reveals how well a metal conducts electrical current, it also indirectly allows you to draw conclusions about changes in the metal's composition, microstructure and mechanical properties. Designed for gage calibration laboratories and shop floor environments requiring precise internal and external measurements over long lengths. 1 Accuracy and inaccuracy (measurement uncertainty) The accuracy of an instrument is a measure of how close the output reading of the instrument is to the correct value. Metrology is the science of measurement. 2) Master Gage Calibration . Hsin-yu Shan Fundamental Measuring Process. Dave Assistant Prof. It contains PowerPoint lecture slides and the Solution Manual. Most of the measuring instruments, which are generally used are of “Secondary Type”. as well as most mechanical trades, along with other metrological instruments such  22 Mar 2016 Methods of measurement based on agreed units and standards. Recognizing these errors is a basic requirement for proper inspection. Categories: Measuring Instruments / Measurement Instruments for optical, mechanical, physical, chemical and other relevant measures: Chart and Diagram Slides for PowerPoint - Beautifully designed chart and diagram s for PowerPoint with visually stunning graphics and animation effects. Punyam Academy has published this ppt presentation to provide information about what its e-learning course provides. 4 Choosing appropriate measuring instruments 9 2 INSTRUMENT TYPES AND PERFORMANCE CHARACTERISTICS 12 2. mechanical measuring instruments ppt

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