Digital Measurement of Force, Voltage, Current

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DIGITAL MEASUREMENTMETHOD FOR FORCE,VOLTAGE

& CURRENT

By:

Laxman V. PrajapatiEC-1 (B)

Enroll: 110050111074Roll No : 22


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-: I ntroduction : -

There are many methods for measurement of

physical quantities like force, voltage, current,resistance and many more.

This methods are mainly classified into two parts

analog and digital measurement. Digital form is

more accurate and modern form of measurement.

Today I'm going to talk about digital measurement

techniques.


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-: I ntroduction : -

Now to measure physical quantities we need some

instruments like galvanometer, voltmeter, etc.

These instruments measure the required quantities intheir specific units like SI unit system eg. MKS

(mass, kilogram, second).

In this presentation we will see how this process is

carried out.


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-: Digital Measurement of Voltage :-

Voltage is the electric potential difference between

two points, or the difference in electric potentialenergy of a unit test charge transported between two

points.

Its SI unit of measurement is volt (V) and subunits

are millivolts (mV), microvolts (V), etc.

It is used for measuring batteries.


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The figure besides

shows the image of adigital voltmeter which

is used to measurevoltage of givendevices.

We can measure both

AC and DC voltagesthrough this device.


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To measure the voltage we

have to set propervoltage (AC , DC) and a

proper range.

Then we have to set a

proper scale i.e.millivolts,

microvolts,kilovolt, etc.


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Then we have to put the

two pins of voltmeter onthe two points across

which the voltage is tobe measured.

Then the value displayedon the device is voltage

between the two points.


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-: Digital Measurement of Current : -

An electric current is a flow of electric charge.

Electric charge flows when there is voltage presentacross a conductor.

Its SI unit is A (ampere) given by columbs/second.

Its subunits are miliampere, microampere, etc.

Its is important to measure amount of charge passing

through conductor


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-: Digital Measurement of Current : -

The figure besides shows

the image of a digitalammeter which is used

to measure current ofgiven devices.

We can measure both ACand DC current through

this device.


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-: Digital Measurement of Current :-

While measuring current

through ammeterattention is to be paid at

where we are attachingthe connecting wires.

While measuring highcurrent wire should be

attached at high currentport.


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-: Digital Measurement of Current :-

If precaution is not taken

than high current maydamage the ammeter.

Digital ammeter makes

measuring current very

easy and accurate.


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-: A Digital M ultimeter :-

This device as name

suggest measures manyelectric quantities like

voltage and current.

With setting proper

parameters one canmeasure both voltage

and current with the helpof this device.


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-: A Digital M ultimeter :-

To measure voltage the

dial is to set at V markand for current at A

mark.Than connecting wires are

to be attached at the twopoints on the circuit

where a quantity is to bemeasured.


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-: Digital Measurement of Force :-

In physics, a force is any influence that causes an

object to undergo a certain change, either concerningits movement, direction, or geometrical construction.

According to Newton F=ma

It's SI unit is newton (kgm/s.s) and smaller unit isknown is dyne.


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Force is measured by

device known as digitalforce meter or force

gauge.

A digital force gauge/

meter is shown in photobeside


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A digital force gauge isbasically a handheld

instrument that containsa load cell, electronic

part, software and adisplay. A load cell is an

electronic device that isused to convert a forceinto an electrical signal.


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A force is applied at the

hook end of the device.The pull or push force

stretches the hook whichin turn measures theforce.

This than shows readings

on the display. So wecome to know amount of

force.


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-: Conclusion :-

So in this way different devices are present to measure

different physical quantities.

A proper instrument is to be selected to measure a

proper quantity.


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THANK YOU

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Digital Measurement of Force, Voltage, Current