WITH EFFECT FROM THE ACADEMIC YEAR 2013- 2014

EE 472

TRANSDUCERS

                                                                               (Elective-III)

Instruction                                                                                                                                                                                        4  Periods per week

Duration of University Examination                                                                                                                                                   3  Hours

University Examination                                                                                                                                                                     75 Marks

Sessional                                                                                                                                                                                         25 Marks

UNIT-I

Basic Methods of Measurement: A generalized measurement system configuration, Basic characteristics of measuring devices: Accuracy, Precision, Error, Linearity, Hysteresis, Threshold, Repeatability, Reliability and maintainability, Span, Calibration.

UNIT-II

Performance Characteristics of Instrumentation System:

Generalized Mathematical model of system, Transfer function representation, Sinusoidal transfer function: Zero. First and Second order instruments, Impulse, Step, Ramp and Frequency responses of above instruments, Specification and testing of Dynamic response.

UNIT-III

Transducer: Definition, Electrical Transducers: Classification. Basic requirement of transducers, Variable resistance transducers, Construction and characteristics of Potentiometers, Application, Electrical Strain gauge: Theory of operation of Resistance Strain gauge, Gauge factor, Types of Electric Strain gauges: Wire gauges. Unbonded and bonded Strain gauges, Foil gauges, Semiconductor Strain gauges. Materials for Strain Gauges, Installation of Strain gauges, Strain measuring circuits, Related problems.

UNIT-IV

Resistive type Temperature Measuring Transducers: Platinum resistance transducer, Thermistor, Thermocouples: Types of thermocouples, Variable inductance and Capacitive transducers, Construction details of different types of inductance transducers:

LVDT,  Application, Induction Potentiometers. Types of Variable

Capacitive Transducers, Applications.