Types of mechanical measuring instruments and their uses pdf

With modern surveying instruments, survey work will be precise, faster and less tedious. List of equipmentsmachines mechanical engineering department fluid mechanics and hydraulic machines lab sr. They are handy for measuring piston or crankshaft journal size, disc. This is the complete explanation of t he 10 measuring instruments and their uses in a detailed way. Measuring instruments, measurement instruments, test equipment, measuring tools, measurement, hand held equipment like thermometers, tachometers. Dec 14, 2011 good blog thanks for sharing this types of valuable information. Plain gauge is defined as the dimension measuring or inspective tools, without a scale to measure any manufacturing part of tools. In the physical sciences, quality assurance, and engineering, measurement is the activity of obtaining and comparing physical quantities of realworld objects and events. Name of important measuring devices and their uses.

It is basic instrument of measurement, consist of two types of scale. Tech 101 how to use measuring tools jim oclair on aug 9th. In this post we will discuss about classification of electrical instruments. These encoders are widely used in a variety of measuring instruments as the length. How do we study the weather meteorologists study the weather by recording and looking at their data they collect data by using different weather instruments thermometer, barometer, hygrometer, and. But before proceeding further, it good to refresh the definitions and terms used in measurements, instruments. The objective of this section is to enable the trainee to.

Tech 101 how to use measuring tools hemmings daily. Principles and methods of temperature measurement course content temperature can be measured via a diverse array of sensors. Absolute instrument measures the process variable directly from the process without the use of conversion. Classification of electrical instruments electrical. Different types of mechanical measuring tools and gauges used on. Some of the modern surveying instruments are discussed in this article. Used for measuring angular distance between two objects. That is why the best measuring instruments are necessary. The magnitude of one of the quantity is unknown, and it is compared with the predefined value. Measurement is an important part of science, construction, art, design and a wide array of other professional fields.

Hysteresis linearity resolution of measuring instruments threshold drift zero stability loading effect system response measurement methods generalized measurement system static performance chapter 01 mechanical measurement 3 hours 7% weightage approx. It is essential for displaying numerical values of the electrical quantities as per the time. The measuring instruments are used frequently in our daytoday life for the measurement of various quantities like length, weight, temperature, pressure, current, voltage etc. The science which is dealing with measurements and their conditions is called measurement science or metrology in this article, we will discuss methods, standards, and instruments for linear measurements but before that, we should. Stop watches are also used to measure time in some sports. In that time, body parts such as arms and feet were often used as measuring instruments. In old days the production was on a small scale, different component parts were made. The distance between the jaws is then read in different ways for the. Important measuring devices and uses, types of measuring. Each measuring instrument serves a specific purpose for the person who is using it. An instrument used in aircrafts for measuring altitudes. Mechanical and other engineering measuring tools and instruments. Also, gauges consume less time as compared to other measuring devices. Care is needed when taking a reading from a mechanical micrometer.

In appendix 1 you will find a incomplete list of the most important mechanical components. From height and depth, to width and breadth, theres a measurement tool for most everything. It is usually employed to measure relatively low pressures. Classification of measuring instruments circuit globe. It is used to measure linear dimensions like length, diameter, depth. Jan 20, 2020 ohms law and kirchhoffs method are useful to analyze and design electrical circuits, providing you with the voltages across, the current through, and the resistance of the components that compose the circuit. The devise that is used for measurement of certain physical quantity is called as measuring instrument. A part from the measuring instruments used in workshop, i will discuss a few types of instruments used in production labs also. The visual means of level measurement previously discussed are rivaled in simplicity and dependability by float type measurement devices.

Electrical measuring instruments and their uses complete. Different types of mechanical measuring tools and gauges used. Micrometers usually come in pairs or in sets with several measured rods included to increase their range. A mechanical pressuremeasuring instrument used to measure pressure above or below the atmospheric pressure. The main scale and the vernier scale that can slide along the main scale. The instruments used to measure the physical and electrical quantities are known as measuring instruments. These tools measure important engineering parameters which describes the condition of the working machinery. Sep 11, 2018 this is the complete explanation of t he 10 measuring instruments and their uses in a detailed way. Modern surveying instruments and their uses in civil. To accurately cook meals from scratch requires the use of small scales. A mechanical pressure measuring instrument used to measure pressure above or below the atmospheric pressure.

Ohms law and kirchhoffs method are useful to analyze and design electrical circuits, providing you with the voltages across, the current through, and the resistance of the components that compose the circuit. Different types of mechanical measuring tools and gauges used on ships. At the moment we provide about 500 different types and models of high quality measuring instruments to do tests and analysis of various physical, electrical, chemical and other parameters. The term measurement means the comparison between the two quantities of the same unit. We offer a broad range of products from the field of measuring instruments. Following are the modern surveying instruments which are used for surveying. Many forms of float type instruments are available, but each uses the principle of a buoyant element that floats on the surface of.

Mostly, the digital meter is used for an accurate reading. Electrical measuring instruments definitions, types. A ruler can be used to draw straight lines but there is no quarranty that the line drawn is accurate and. Units of measurement and their standards, which is concerned with the establishment, reproduction, conservation and transfer of units of measurement and their standards. Methods of measurement based on agreed units and standards. These types of gauges are used in many different things, and you will find that owning one will come in handy. All of them infer temperature by sensing some change in a physical characteristic. Mar 15, 2020 basically there are three types of measuring instruments and they are electrical measuring instruments mechanical measuring instruments. Electrical measuring instruments and their uses complete notes. Primitive peoples needed measuring to perform tasks such as building dwellings, fashioning clothing and interchanging food. Types of precision measuring instruments used in industry. The meter is provided with 32 program adjustable alarms, up to four inputs or outputs and. Different types of measuring tools and gauges used on ships.

There are a few measuring instruments that are more commonly seen than. Pressure gauges measure the pressure of water and air. In the next two sections i will show you examples of mechanical equipment that have been built in the laboratories depending on the task that had to be done, i. Blueprints are exact copies of mechanical or other types of drawings and employ a language of their own. This may not be as simple to use as some of the other measurement tools due to the way that you have to read it, but it does work quite well. Vernier caliper is a widely used linear measurement instrument with a least count of 0. Our offered mechanical measuring instruments feature a set of various tools which are widely used for measuring purpose and feature perfection and an unmatched accuracy. The matter presented here is prepared by the author for their respective teaching assignments by referring the text books and reference books.

The term has its origins in the art and science of scientific instrumentmaking instrumentation can refer to devices as simple as directreading thermometers, or as complex as multisensor components of industrial control systems. A measuring instrument is a device for measuring a physical quantity. Double prismatic guide of 30 020 011 0 150 014 40 0. Humans employ multiple tools to measure their worlds. Classification of measuring instruments instrumentation. There are four basic types of temperature measuring devices, each of which uses a different principle. Electrical instruments measure the various electrical quantities like electrical power factor, power, voltage and. For example, a water pressure gauge will tell you the amount of pressure coming out of. Different precision measuring tools are present in ship such as vernier.

To the user of measuring instruments a knowledge of their construction and accuracy is a matter. Ramkumar department of mechanical engineering iit kanpur. The operator can use gauge without having vast knowledge in operating those mechanical components. Equipmentsmachines 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. Measuring centres 7 use the mc 740 multifunction meter is used for monitoring and measuring electrical quantities of a threephase electricenergy distribution system. Dec 05, 2016 name of important measuring devices and their uses. Exact measurement is an absolute must for everyone who wants to guarantee precise and firstclass work. Download as docx, pdf, txt or read online from scribd. There are a few measuring instruments that are more commonly seen than others. To measure these parameters require instruments, and these instruments are described in this section. Rulers are used to measure length, as are meter sticks and yardsticks.

In addition to weights and lengths, primitive societies also needed to measure the volume of liquids and the passing of time. Today, the usual measuring instruments for time are clocks and watches. Electrical measuring instruments physics libretexts. Classification of measuring instruments the instrument used for measuring the physical and electrical quantities is known as the measuring instrument. Measurement devices come in all shapes, sizes and types. Graduates in electrical or mechanical engineering or any of the physical sciences are taught the essential disciplines of measurement science to enable them to design electronic measuring. More concentration should on class room work and text book methodology. In the past, a common time measuring instrument was the sundial. Measuring is not only checking the length, width or thickness of an objects but also checking of the shape things like the flatness, straightness, roundness or squareness. Chapter 1 mechanical measurement presentation prepared by prof. Mar 09, 2016 introduction to mechanical measurement 1. The 10 measuring instruments and their uses are presented below. Electrical measuring instruments types accuracy precision.

Classification of measuring instruments instrumentation and. Classification of electrical instruments electrical tutorials. Accurate to within several thousandths, micrometers are an essential tool for machinists and engineers. Measuring and measuring tools the accuracy of any measuring device depends on the user as much as on the design of the tool. These are designed by our professionals using the highest grade of material to enable strength and high durability. Rulers are used extensively in design labs and classrooms, while meter and yardsticks are more commonly used for. Types of micrometer the names are based on their application. In the physical sciences, quality assurance, and engineering, measurement is the activity of obtaining and comparing physical. Instrumentation is a collective term for measuring instruments that are used for indicating, measuring and recording physical quantities.

Here we are interested in electrical measuring instruments so we will discuss about them in detail. As this type of encoder can drive with less power than the incremental encoder, the battery. Electrical measuring instruments give an accurate and efficient reading for electrical equipment. Even it can be defined as the accuracy of measurements. 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.

Common maintenance tools and their uses tools are designed to make a job easier and enable. Learn about different types of mechanical tools and gauges used on ships. Measuring instruments are used for recording the data with respect to the time. Pressure gauges are a really common and crucial measuring tool. The least count of a measuring instrument is the smallest change in the measured quantity that can be resolved on the instrument s scale.

Jul 20, 2014 electrical measuring instruments definitions, types. It requires external scale to compare the measured value. Measuring instruments and gauges are used to measure various parameters such as clearance, diameter, depth, ovality, trueness etc. A sundial represents one of the earliest devices used to measure the suns position in the sky, until inventors created the first clocks, which measure the passing of time. Hi aspirants, scientific instruments are part of laboratory equipment, but are considered more sophisticated and more specialized than other measuring instruments as scales, meter sticks, chronometers, thermometers or even power or waveform generators.

A diaphragm pressure gauge, in its simplest form, consists of a corrugated diaphragm as shown in the figure. The measuring instruments may be classified as follows. Mechanical instruments and tools tools metalworking scribd. I probes may be mechanical, optical, laser, or white light, among others. For highly accurate measurement of time an atomic clock is used. In the field of magnetic measurements the mechanical equipment is mainly used for the. An astonishing array of devices and tools allow humans to measure just about everything, including calculating travel distances, determining a boards length in construction, ascertaining air and water temperatures, analyzing wind speed, gauging the pressure inside a tire and measuring the distance around the globe. Metrology is defined as the science of measurements or the precision of measurements.