JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Pre-requisites

Nil

Course Objectives

To enable the students to select and design suitable instruments to meet

the requirements of industrial applications and various transducers used for the measurement of various physical quantities and the following:

• Various types of Sensors & Transducers and their working principle
• Resistive, Capacitive and Inductive transducers
• Some of the miscellaneous transducers
• Characteristics of transducers

Course Outcomes

Upon completion of this course the student shall be able to understand

the working of basic sensors and transducers used in any industries.

UNIT - I

Measurements and Instrumentation of Transducers: Measurements – Basic method of measurement – Generalized scheme for measurement systems – Units and standards – Errors – Classification of errors, error analysis – Statistical methods – Sensor – Transducer – Classification of transducers – Basic requirement of transducers.

UNIT - II

Characteristics of Transducers: Static characteristics – Dynamic characteristics – Mathematical model of transducer – Zero, first order and second order transducers – Response to impulse, step, ramp and sinusoidal inputs

UNIT - III

Resistive Transducers: Potentiometer –Loading effect – Strain gauge – Theory, types, temperature compensation – Applications – Torque measurement – Proving Ring – Load Cell – Resistance thermometer – Thermistors materials – Constructions, Characteristics – Hot wire anemometer

UNIT - IV

Inductive and Capacitive Transducer: Self inductive transducer – Mutual inductive transducers – Linear Variable Differential Transformer – LVDT Accelerometer – RVDT – Synchros – Microsyn – Capacitive transducer – Variable Area Type – Variable Air Gap type – Variable Permittivity type – Capacitor microphone.

R16 B.TECH AERONAUTICAL ENGG.

UNIT - V

Miscellaneous Transducers: Piezoelectric transducer – Hall Effect transducers – Smart sensors – Fiber optic sensors – Film sensors – MEMS – Nano sensors, Digital transducers

TEXT BOOKS:

• 1. Sawhney. A.K, “A Course in Electrical and Electronics Measurements and Instrumentation”, 18th Edition, Dhanpat Rai & Company Private Limited, 2007.
• 2. Patranabis. D, “Sensors and Transducers”, Prentice Hall of India, 2003.

REFERENCE BOOKS:

• 1. Renganathan. S, “Transducer Engineering”, Allied Publishers, Chennai, 2003.
• 2. Doebelin. E.A, “Measurement Systems – Applications and Design”, Tata McGraw Hill, New York, 2000.
• 3. John. P, Bentley, “Principles of Measurement Systems”, III Edition, Pearson Education, 2000.
• 4. Murthy. D. V. S, “Transducers and Instrumentation”, Prentice Hall of India, 2001.
• 5. Sensor Technology Hand Book – Jon Wilson, Newne 2004.
• 6. Instrument Transducers – An Introduction to their Performance and design – by Herman K. P. Neubrat, Oxford University Press. R16 B.TECH AERONAUTICAL ENGG. B.TECH. ELECTRONICS AND INSTRUMENTATION ENGINEERING