Electronic principles – PN devices – semi conductor diodes. Transistors – basics – integrated circuits. Operational amplifier ICS – characteristics and pin details analog circuits. Amplifiers using operational amplifier IC – inverting, noninverting, differential. Summers, integrators, differentiators. Other signal conditioning circuits – basics of passive and active filters.
UNIT II
Addition, subtraction devices – function generation – linearization. Digital circuits – Clock – Gates – Truth table – Decoders, Encoders, ROM and RAM. Flip-lops – Counters – ripple, divide by N and up down counters. Microprocessor based systems – An elementary introduction of the chips and organization. Analog to digital conversion – DIGITAL APPLICATIONS of signal conditioning
UNIT III
General measurement system – an introduction – static and dynamic measurement – System response – rise time – distortion – impedance matching. Basic input circuits – Ballast, Voltage divider and bridge circuits. Sensitivity and loading error of these circuits. Motion measurement – translational, rotary and relative displacement transducers, Resistive transducers. Capacitive, inductive pick ups – LVDT
UNIT IV
Strain gauges – basics and types – Piezo resistance Gauge factor. Mounting of strain gauges and strain bridges – calibration and balancing. Force measurement – Torque and load cells – instrumentation. Temperature measurement - standards and calibration – Thermal expansion methods. Thermo electrics sensors – basics – types – materials – circuits – Bridge compensation – Cold junction circuits. Electric resistance and semiconductor temperature sensors. Flow measurement – velocity, magnitude and direction measurement. Anemometers – discharge measuring sensors – Mass flow meters, pH, Viscosity, liquid level, humidity measurement. Spectrophotometry – Calorimetry – Gas Chromatography.
UNIT V
Speed measurement and event counting using photo electric and reluctance principles – Proximity sensors. Instrumentation specific to Textile processing industry. Indicating and recording devices – Basic analog and digital meters – Standards and calibration. Cathode ray oscilloscopes and xy plotters and digital printers and plotters – magnetic disc and tape storage – Data loggers.
UNIT VI
Industrial instrumentation – Dielectric heating – Electronic relay circuits – SCR, DIAC, and TRIAC – elementary power electronics. Elementary temperature control circuits – Types of process controllers – Proportional and PDI control. Open loop and feed back control systems – servomechanisms – its response. Typical self-balancing relayed, chopper based and On Off controllers. Computerised data acquisition and control in the Textile processing industry.
REFERENCE
Text Books
1. Doeblin, O.E., Measurement System, McGraw-Hill International Book Co., Tokyo, 1983.
2. Ralph. B and Nathan, W. Industrial Electronic Circuits and Applications. Prentice Hall India Ltd., New Delhi. 1972.
Reference Books
1. Human, J.P., Experimental Methods for Engineers McGraw-Hill Book Co., New Delhi, 1978.
2. Millman and Halkian, Electronic Fundamentals and Applications, McGraw Hill, New York, 1972.