VFSTR UNIVERSITY
IV Year B.Tech. ECE I - Semester L T P To C
4 - - 4 4
EC435-ELECTRONIC
MEASUREMENTS& INSTRUMENTATION
Course Description & Objectives:
To introduce to the students the operation of various electronic Instruments
which are used to measure the basic parameters, oscilloscopes, function
generators, wave analyzers and various sensors and transducers
Course outcomes:
Upon successful completion of this course, students should be able to:
a. A brief look on electrical, electronics and computer measurement and
their application, terms, error calculation, error and data case study
b. Operation and calculation of different DC and AC bridges to measure
inductance, capacitance and frequency
c. Able to know different instruments
d. To familiar with oscilloscope operations
e. To identify various sensors, Transducers and their brief Performance
specifications.
f. To understand principle of working of various transducers used to
measure Temperature, Displacement, Level, and various miscellaneous
other sensors.
UNIT I - Electro Mechanical instruments and their characteristics: Static
characteristics, Dynamic Characteristics, Errors: Gross error, systematic error,
Random error, limiting error, Probable error. Electro Mechanical Instruments:
Suspension galvanometer, PMMC mechanism, DC Ammeters, DC Volt
meters, Ohmmeter, multi range ohmmeter, calibration of DC instruments. AC
meters: Electro dynamometer, Rectifier meter, Thermo instruments, Watt hour
meter, and power measurement using dynamometers, power factor
measurements, and instrument transformers.
Electronics & Communication Engineering 135
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UNIT II - AC & DC Bridges & Electronic Instruments :
DC Bridges: W heat stone bridge, Kelvins double bridge. AC Bridges:
Measurement of inductance: Maxwells bridge, Anderson bridge.
Measurement of capacitance: Schering Bridge, Hays Bridge, Measurement
of frequency: W iens Bridge, Errors and precautions in using bridges.
Electronic Instruments: Amplified DC Meter, True RMS responding Voltmeter,
Electronic multimeter, Digital Voltmeter, Q-meter.
UNIT III - Signal Generators & Signal Analysis & Frequency Counter & Time
Interval Measurement :
Signal Generator: Sine wave Generator: Sweep Generator, Pulse and Square
Wave Generator, Frequency Synthesized Generator, Function Generator. Wave
Analyzers: Harmonic Distortion Analyzer, FT spectrum analyzer, applications.
Frequency Counter & Time Interval Measurement: Simple Frequency Counter,
Time Period measurement, Precision Computing counter using dual counters
UNIT IV - Display Devices & Recorders and Signal Conditioning Devices:
Display Devices: CRO Principles and operation and its applications, dual
beam, dual trace oscilloscope, LCD, LED, Plasma displays. Recorders: Types
of recorders, Strip chart recorders, XY recorders, Magnetic tape recorders.
Signal Conditioning Devices: Signal conditioning, the op-amp, protection,
filtering
UNIT V - Sensors & Transducers :
Classification of Transducers, strain gauge, photoelectric transducers,
capacitive, inductive transducers, LVDT Thermoelectric transducers, load cell,
light and proximity sensors, data acquisition systems.
TEXT BOOKS :
1. A.D. Helfrick and W.D. Cooper, Modern Electronic Instrumen-tation
and Measurement Techniques 5th ed., PHI, 2002.
2. R.K. Rajput, Electronic Measurements and Instrumentation, 2nd
ed., S. Chand, 2009.
136 Electronics & Communication Engineering
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VFSTR UNIVERSITY
REFERENCES BOOKS :
1. David A. Bell, Electronic Instrumentation & Measurements, 2nd
ed., PHI, 2003.
2. A.K. Sawhany, Electrical and Electronics Measurements &
Instrumentation, Dhanpath Roy & Co, 200.
Electronics & Communication Engineering 137
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