EE 9203 MEASUREMENTS AND INSTRUMENTATION

ANNA UNIVERSITY CHENNAI :: CHENNAI 600 025
REGULATIONS – 2008 CURRICULUM FROM III SEMESTERS FOR
B.E. ELECTRICAL AND ELECTRONICS ENGINEERING
EE 9203 MEASUREMENTS AND INSTRUMENTATION

AIM:
To provide adequate knowledge of measurements techniques using electrical and
electronic instruments.

OBJECTIVES:

Introduction to general instrument system, error, calibration etc.
Emphasis is laid on analog and digital techniques used to measure voltage, current, energy, power and non-electrical parameters.
To have an adequate knowledge of comparison methods of measurement.
Elaborate discussion about storage & display devices.
Exposure to various transducers and data acquisition system.


UNIT I - QUALITIES OF MEASUREMENT 9

Functional elements of an instrument – Static and dynamic characteristics – Errors in
measurement – Statistical evaluation of measurement data – Standards and
calibration.

UNIT II - PRIMARY SENSING ELEMENTS AND SIGNAL CONDITIONING 9

Principles, Classification of sensors and transducers – Selection of transducers –
Resistive, capacitive & inductive transducers – Piezoelectric, optical and digital
transducers – Basic Instrumentation Amplifier, Sample and Hold Circuit, A/D and D/A
converters

UNIT III - LECTRICAL MEASUREMNETS AND INSTRUMENTS 9

Principle and types of analog voltmeters, ammeters, multimeters – Single and three
phase wattmeters and energy meters – Magnetic measurements –Instrument
transformers – Instruments for measurement of frequency and phase.

UNIT IV - MEASUREMENT OF PASSIVE ELEMENTS 9

Resistance measurement: Conventional methods, Wheatstone bridge, sensitivity of
wheatstone bridge – Kelvin’s bridges – Kelvin’s double bridge method –
Measurement of high resistance – megohm bridge method – Inductance
measurement: Maxwell’s inductance bridge – Maxwell’s LC bridge – Hay’s bridge –
Anderson’s bridge – Capacitance measurement: De Sauty’s bridge – Schering
bridge – Measurement of frequency : Wien’s bridge.

UNIT V - BASIC MEASUREMENT METHODS OF NON-ELECTRICAL
PARAMETERS 9

Measurement of Pressure: Comparison with known dead weights - Temperature:
Thermocouple – pyrometers - Flow: Flow meters – Rotameters – Electromagnetic
flow metres – Level: Mechanical, Electrical and optical level indicators - Speed:
tachometers – stroboscopic methods, gyroscopes - Acceleration, Humidity:Wet and
dry bulb hygrometer – Dunmore and pope cells, conductivity cells.
TOTAL : 45 PERIODS TEXT BOOKS:

1. A.K. Sawhney, ‘A Course in Electrical & Electronic Measurements &
Instrumentation’, Dhanpat Rai and Co, 2004.
2. J. B. Gupta, ‘A Course in Electronic and Electrical Measurements’, S. K. Kataria &
Sons, Delhi, 2003.

REFERENCES:

1. E.O. Doebelin, ‘Measurement Systems – Application and Design’, Tata McGraw
Hill publishing company, 2003.
2. Alan S. Morris,” Measurement & Instrumentation Principles”, Elsevier
Publications, 2001
3. Arun K. Ghosh, “ Introduction to Measurements and Instrumentation”, Second
Edition, PHI, 2007.