File Name: types of measuring instruments and their uses .zip
Instrument And Measurement Book Pdf. The text, electrical and electronics measurements and instrumentation, captures the gamut of essential measurements required in the fields of electrical and electronics engineering and provides a comprehensive discourse on the principles of the instruments used for such measurements.
Not sure how to measure?. An estimated amount for each Source Energy Medicine is fine and will save a lot of prep time. Measurement of Length. Chooses appropriate units of measurement for area and volume and converts from one unit to another. Millimeters and centimeters are used to measure short lengths.
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. The result of the comparison obtained regarding numerical value. This instrument is suitable for measuring the static and stable condition because the instrument is unable to give the response to the dynamic condition.
The electronic instrument has quick response time. The instrument provides the quick response as compared to the electrical and mechanical instrument.
The electrical instrument is used for measuring electrical quantities likes current, voltage, power, etc. The ammeter , voltmeter , wattmeter are the examples of the electrical measuring instrument. The ammeter measures the current in amps; voltmeter measures voltage and Wattmeter are used for measuring the power. The classification of the electric instruments depends on the methods of representing the output reading.
In this article, we discuss the different types of electrical instrument. The absolute instrument gives the value of measures quantities regarding the physical constant. The physical constant means the angle of deflection, degree and meter constant. The mathematical calculation requires for knowing the value of a physical constant.
The tangent galvanometer is the examples of the absolute instruments. In tangent galvanometer, the magnitude of current passes through the coil determines by the tangent of the angle of deflection of their coil, the horizontal component of the earth magnetic field, radius and the number of turns of wire used. The most common applications of this type of instrument are found in laboratories.
In the secondary instrument, the deflection shows the magnitude of the measurable quantities. The output of this type of device is directly obtained, and no mathematical calculation requires for knowing their value. The digital instrument gives the output in the numeric form. The instrument is more accurate as compared to the analogue instrument because no human error occurs in the reading. The instrument whose output varies continuously is known as the analogue instrument.
The analogue instrument has the pointer which shows the magnitude of the measurable quantities. The analogue device classifies into two types. In this instrument, the zero or null deflection indicates the magnitude of the measured quantity.
The instrument has high accuracy and sensitivity. In null deflection instrument, the one known and one unknown quantity use.
When the value of the known and the unknown measuring quantities are equal, the pointer shows the zero or null deflection. The null deflection instrument is used in the potentiometer and in galvanometer for obtaining the null point.
The instrument in which the value of measuring quantity is determined through the deflection of the pointer is known as the deflection type instrument. The measuring quantity deflects the pointer of the moving system of the instrument which is fixed on the calibrated scale.
Thus, the magnitude of the measured quantity is known. The response time of the electronic instrument is very high as compared to the electrical and mechanical device.
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Measuring Instruments plays a vital role in the Engineering Workshop. The Instruments duty is to measure the given specimen according to the given dimensions. In the last class, we had discussed Angular Measurements and Linear Instruments in a detailed way. Before knowing the instruments, you need to know the units of measurement in both C. S and M. S System and are as follows.
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The instrument used for measuring the physical and electrical quantities is known as the measuring instrument.Reply
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.Reply
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It is proposed to divide the general criterion for the accuracy of measures and measuring instruments expressed by a conventional sign or number into two notations, those of accuracy categories and accuracy classes.Reply
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