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Electronic Measuring Instruments And Their Principles Of Working Pdf

electronic measuring instruments and their principles of working pdf

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The physicals quantity like voltage, current, power and energy are measured through the analogue instruments. Most of the analogue instrument use pointer or dial for indicating the magnitude of the measured quantity.

The instrument used for measuring the physical and electrical quantities is known as the measuring instrument. The term measurement means the comparison between the two quantities of the same unit. The magnitude of one of the quantity is unknown, and it is compared with the predefined value.

EEC 126 Instrumentation 1-Theory

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Facebook Twitter. An analog instrument is one in which the output or display is a continuous function of time and bears a constant relation to its input. Analog instruments find extensive use in present day applications although digital instruments are increasing in number and applications. The areas of application which are common to both analog and digital instruments are fairly limited at present. Hence, it can safely be predicted that the analog instruments will remain in extensive use for a number of years and are not likely to be completely replaced by digital instruments for certain applications. Broadly, the analog instruments and for that matter digital instruments may be classified according to the quantity they measure. For example, an instrument meant for measurement of current is classified as an Ammeter while an instrument that measures voltage is classified as a Voltmeter.

Measuring Instruments and Electrical Measurements

The instruments used to measure any quantity are known as measuring instruments. If the instruments can measure the basic electrical quantities, such as voltage and current are known as basic measuring instruments. As the name suggests, voltmeter is a measuring instrument which measures the voltage across any two points of an electric circuit. The units of voltage are volt and the measuring instrument is meter. We can classify the voltmeters into the following two types based on the type of voltage that it can measure. As the name suggests, DC voltmeter measures the DC voltage across any two points of an electric circuit. A practical DC voltmeter is shown in below figure.

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Electronic Distance Measurement Instrument- Types, Functions & Operations

The reason is the electronic devices divert your attention and also cause strains while reading eBooks. Knowledge of instrumentation is critical in light of the highly sensitive and precise requirements of modern processes and systems. Rapid development in instrumentation technology coupled with the adoption of new standards makes a firm, up-to-date foundation of knowledge more important than ever in most science and engineering fields.

Ammeter The ammeter is the basis for many other electrical measuring instruments. Whether you are measuring volts or ohms, essentially inside the instrument you are measuring current. Measurement of current in a circuit is somewhat problematic because all the electrical energy to be measured must pass through the meter, so there is the inconvenience of cutting open and later re-terminating the circuit. Another problem is that conventional ammeters, as incorporated in the ubiquitous multimeter, cannot dissipate heat that is greater than just a few amps.

Skip to Main Content. A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity. Use of this web site signifies your agreement to the terms and conditions. Application of Embedded Computer Module in Intelligent Measurement Instruments Abstract: This paper analyzed the application of embedded computer system in the field of electronic measurement instrument. The general work principle of an instrument was firstly introduced.

Analog Instruments | Classification of Analog Instruments

List of electrical and electronic measuring equipment

 Сядь, - повторил коммандер, на этот раз тверже. - Выпустите меня! - Она испуганно смотрела на открытую дверь его кабинета. Стратмор понял, что она смертельно напугана. Он спокойно подошел к двери, выглянул на площадку лестницы и всмотрелся в темноту. Хейла нигде не было. Тогда он вернулся в кабинет и прикрыл за собой дверь, затем заблокировал ее стулом, подошел к столу и достал что-то из выдвижного ящика. В тусклом свете мониторов Сьюзан увидела, что это, и побледнела.

Энсей решил пойти на собеседование. Сомнения, которые его одолевали, исчезли, как только он встретился с коммандером Стратмором. У них состоялся откровенный разговор о его происхождении, о потенциальной враждебности, какую он мог испытывать к Соединенным Штатам, о его планах на будущее. Танкадо прошел проверку на полиграф-машине и пережил пять недель интенсивного психологического тестирования.

Линия Джаббы оказалась занята, а службу ожидания соединения Джабба отвергал как хитрый трюк корпорации Американ телефон энд телеграф, рассчитанный на то, чтобы увеличить прибыль: простая фраза Я говорю по другому телефону, я вам перезвоню приносила телефонным компаниям миллионы дополнительных долларов ежегодно. Отказ Джаббы использовать данную услугу был его личным ответом на требование АН Б о том, чтобы он всегда был доступен по мобильному телефону. Чатрукьян повернулся и посмотрел в пустой зал шифровалки. Шум генераторов внизу с каждой минутой становился все громче. Фил физически ощущал, что времени остается все меньше.

Errors and their analysis, Standards of measurement. Bridge Measurement: Electronic Instruments for Measuring Basic Parameters: Amplified DC meter, AC Voltmeter, constant uniform deviation of the operation of an instrument is known as a systematic error. Most DVMs use the principle of time period measurement.


  1. Lindsay B.

    12.12.2020 at 07:06

    There are available digital measuring instruments with extremely small uncertainty. Thus, such instruments can be used as the working standards. For example.

  2. Stephanie D.

    12.12.2020 at 23:36

    Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.

  3. Oziel C.

    20.12.2020 at 03:08

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