Feb 21, 2020 explore instrumentation engineering seminar topics, applied electronics and instrumentation engineering seminar topics 2016, latest ieee ae mechatronics seminars list, top advanced seminar papers 2015 2016, recent ieee essay topics, speech ideas, dissertation, ce new thesis, research ieee ce seminar topics, reports, synopsis, advantanges, disadvantages, abstracts, presentation slides free. Requirements of calibration management system each instrument requires. Different precision measuring tools are present in ship such as vernier callipers, micrometer, feeler gauges, american wire gauge,awg, bridge. With our proven training solutions we have serviced corporations in the energy industry, process industries, industrial manufacturing, chemical plants. For the love of physics walter lewin may 16, 2011 duration. Measurement is defined as the process or the act of measurement.
Apr 02, 2017 as in linear measurement, they can be categorized into two groups. Here are some of the fundamental point that we are discussing in the above presentation. For measuring any quantity there must be some unit to measure and express. The size and type of parts to be measured, the environment temperature, humidity, dust, pressure, and so on. Without these he was acutely aware of the detriment to machine performance and making items fit together better. We deliver best in class training content for the entire workforce within operations and maintenance. Level measurement wika has a comprehensive range of level measuring in. Scientists, engineers and other humans use a vast range of instruments to perform their measurements. The second category of angular measuring instruments is called face standard instruments. The methods of measuring mechanical quantities are discussed subsequently, overing both the basic and derived quantities. Sika usa provides a broad selection of mechanical measuring instruments such as industrial thermometers, dial thermometers, pressure gauges and load cells. Drawing paper this type does not groove easily when pressure is applied to the pencil.
Unit 9 measuring instruments basic darsonval meter movement with rectifier to change ac voltage to dc voltage. Some of the recent developments such as laserdoppler techniques, holography, have also been included. Types of precision measuring instruments used in industry. Handheld measuring instruments after use u see all instruments, respectively digital instruments. Concept of measurement syllabus general concept generalized measurement systemunits. Unique identification a recorded history and current calibration status use appropriate for the function of the instrument calibration procedures require approved procedures for calibration schedule for calibration process range limits calibration standards and test equipment must be more accurate. Vibration measurement instruments and vibration analyzers measure, display, and analyze vibration. Mar 09, 2016 introduction to mechanical measurement 1. It is basic that the measuring process inevitably alters the characteristics of both the source of the measured quantity and the measuring system itself, from which it must follow that there will always be some difference between the measured indication and the corresponding tobemeasured quantity. They are very reliable for static and stable conditions. Oct 31, 2018 displaying powerpoint presentation on measuring instruments available to view or download. Electrical methods of indicating the output of detectors are more rapid than. Nptel mechanical engineering mechanical measurements.
Mostly, the digital meter is used for an accurate reading. Jul 07, 2017 the selection of an appropriate measuring instrument for a particular application also depends on four factors, they are. Below is what you should know about the care and maintenance of these special precision. To make the student to impart the knowledge of basic engineering measurement systems for pressure, temperature, level, velocity, flow and vibration introduce to electronic control systems associated with automatic control of measuring parameters. Here is some most commonly used mechanical instruments for measurement in industries. More concentration should on class room work and text book methodology. Measuring instruments, least count, parts name and details. Unit 9 measuring instruments the voltmeter is designed to be connected directly across the source of power. The oscillation about a reference point can be modeled mathematically as video credit.
Measuring tapes are used to measure length in metres and. Unit 9 measuring instruments reading an analog meter is similar to reading a speedometer or fuel gauge. This means the methods for making the measurements and the instruments used for them should be reliable enough to make the correct measurements. To ease it, we are giving examples for each of the devices alongwith differences and similarities among each temperature measuring. How to properly care for and handle precision measuring. Unit 5 linear measuring devices and linear measuring devices. Then, sir joseph whitworth recognised the need to create and apply measurement standards across complex engineering assemblies. Unit 1 concept of measurement authorstream presentation. Dec 05, 2019 measuring instruments are used for recording the data with respect to the time. General characteristics and selection of measuring instruments. Micrometer heads with a mechanical or electronic digital display, which allow direct reading of a measurement value, are also available. Classification of measuring instruments electrical measurements. Ppt mechanical measurements powerpoint presentation. The basic principle of linear measurement mechanical type is that of.
A measurement instrument gives an estimate of the value of a physical quantity. Electrical measuring instruments give an accurate and efficient reading for electrical equipment. It is essential for displaying numerical values of the electrical quantities as per the time. Choose, maintain and use the most suitable marking out and measuring equipment. Oslo paper is commonly used but bond paper is also recommended. Vernier caliper is a widely used linear measurement instrument with a least count of 0.
Without these instruments i dont think any quality. Design, manufacturing and testing of gauges of all kinds. Ruler 2 precautions to be taken when using a ruler. Measuring instrument precision, mechanical engineering. Chapter 1 mechanical measurement presentation prepared by prof. But mechanical instruments pertain to measurements we undertake in mechanical engineering to describe various systems, which we meet with in practice. This presentation by hooria shahzad is about measuring instruments in which we study metre rule, measuring tape, vernier callipers and screw. The movement is due to the difference between the standard and the actual dimension being checked the method for magnifying the small stylus movement in all the mechanical comparators is by means of levers, gear trains or combination of these. If so, share your ppt presentation slides online with. Ruler 1 a ruler is used to measure lengths from a few cm up to 1 m. It consists of obtaining a quantitative comparison between a predefined standard and a measurand or unknown magnitude. A metre rule is used to measure length of an object or distance between two points. The worlds best measuring instruments are all but worthless if they cant be relied on to provide accurate, reliable results. Classification of measuring instruments circuit globe.
Definitions and terms applicable to mechanical measurements. All thermometers are suited for operation in a thermowell if necessary. It includes divided scales like protractors, bevel protractors. In this temperature measuring devices presentation, we are talking about four basic types of temperature measuring devices and what are the principle of operation for each. For increasing the accuracy of direct observation methods, following mechanical means of. Vibration measurement instruments and vibration analyzers. Mar 10, 2018 measuring instruments, least count, parts name and details in this video i explained about some basic measuring instrument with their parts name and least count. Fundamental measuring process standard measurand process of comparison result input measurement readout generalized measuring system signal conditioner modifies transduced signal into form usable by final stage. 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. Download temperature measuring instruments presentation. Measuring instruments measuring instruments are used to measure physical quantities.
The disadvantage is they are unable to respond rapidly to measurement of dynamic and transient conditions. 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. With both automatic zeroing and onoff switch, the only controls needed are a fourposition range selection switch and a hold button for retaining the display value. The hagner digital luxmeter, model ec1, is a small, handy and extremely easytouse instrument for accurate measurement of illuminance over a range of 0.
The magnitude of one of the quantity is unknown, and it is compared with the predefined value. The term measurement means the comparison between the two quantities of the same unit. It is used to measure linear dimensions like length. Classification of measuring instruments the instrument used for measuring the physical and electrical quantities is known as the measuring instrument. With a need to make quality products which meet design specified tolerances, a large number of firms, research and development centers, and school and college laboratories use measuring instruments that have high accuracy and precision. Sensitivity this is the relationship between a change in the output reading for a given change of the input. Nptel provides elearning through online web and video courses various streams. The objective of this section is to enable the trainee to. Measurement is not just a tool for determining quantities, the physical size of.
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