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8/22/2019 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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-: Digital Measurement of Voltage :-
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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-: Digital Measurement of Voltage :-
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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-: Digital Measurement of Voltage :-
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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-: Digital Measurement of Force :-
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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-: Digital Measurement of Force :-
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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-: Digital Measurement of Force :-
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