Instrumentation I
Course Objectives:
To provide comprehensive treatment of methods and instrument for a wide range of measurement problems.
- Instrumentations Systems(2 hours)
- Functions of components of instrumentation system introduction, signal processing, Signal Transmission, Output Indication
- Need for Electrical, Electronics, Pneumatic and Hydraulic working media systems and Conversion devices
- Analog and digital systems
- Theory of measurement(10 hours)
- Static performance parameters-accuracy, precision, sensitivity, resolution and linearity
- Dynamic performance parameters-Response time, Frequency Response and Bandwidth
- Error in measurement
- Statistical analysis of error in measurement
- Measurement of voltage & current (moving coil & moving iron instruments)
- Measurement of low, high & medium resistances
- AC bridge & measurement of Inductance and Capacitance
- Transducer(8 hours)
- Introduction
- Classification
- Application
- Measurement of mechanical variables, displacement, strain, velocity, acceleration and vibration
- Measurement of process variables-Temperature, Pressure, Level, Fluid flow, Chemical constituents in gases or liquids, pH and Humidity
- Measurement of bio-physical variables blood pressure and myoelectric potentials
- Electrical Signal Processing and transmission(6 hours)
- Basic Op-amp characteristics
- Instrumentation amplifier
- Signal amplification, attenuation, integration, differentiation, network isolation, wave shaping
- Effect of noise, analog filtering, digital filtering
- Optical communication, fibre optics, electro-optic conversion devices
- Analog-Digital and Digital-Analog Conversion(6 hours)
- Analog signal and digital signal
- Digital to analog convertors-weighted resistor type, R-2R ladder type, DAC Errors
- Analog to digital convertors-successive approximation type, ramp type, dual ramp type, flash type, ADC errors
- Digital Instrumentation(5 hours)
- Sample data system, sample and hold circuit
- Components of data acquisition system
- Interfacing to the computer
- Electrical equipment(8 hours)
- Wattmeter
- Types
- Working principles
- Energy meter
- Types
- Working principles
- Frequency meter
- Types
- Working principles
- Power factor meter
- Instrument transformers
Practical:
- Accuracy test in analog meters
- Operational Amplifiers in Circuits
- Use of Op amp as a summer, inverter, integrator and differentiator
- Use resistive, inductive and capacitive transducers to measure displacement
- Use strain gauge transducers to measure force
- Study of Various transducers for measurement of Angular displacement, Angular Velocity, Pressure and Flow
- Use optical, Hall effect and inductive transducer to measure angular displacement
- Use tacho - generator to measure angular velocity
- Use RTD transducers to measure pressure and flow
- Digital to Analog Conversion
- Perform static testing of D/A converter
- Analog to Digital Conversion
- Perform static testing of A/D converter
References:
- D.M Considine "Process Instruments and Controls Handbook" third edition McGraw Hill, 1985
- S. Wolf and R.F.M. Smith "Students Reference Manual for Electronics Instrumentation Laboratories", Prentice Hall, 1990
- E.O Deobelin "Measurement System, Application and Design" McGraw Hill, 1990
- A.K Sawhney "A Course in Electronic Measurement and Instrumentation " Dhanpat Rai and Sons,1988
- C.S. Rangan, G.R Sharma and V.S.V. Mani, "Instrumentation Devices and Systems" Tata McGraw Hill publishing Company Limited New Delhi,1992.
- J.B. Gupta. "A Course in Electrical & Electronics Measurement & Instrumentation, thirteenth edition, 2008, Kataria & Sons.
Evaluation Scheme:
The questions will cover all the chapters of the syllabus. The evaluation scheme will be as indicated in the table below:
Chapters |
Hours |
Marks Distribution* |
1 |
2 |
6 |
2 |
10 |
16 |
3 |
8 |
16 |
4 |
6 |
10 |
5 |
6 |
10 |
6 |
5 |
10 |
7 |
8 |
12 |
Total |
45 |
80 |
*Note: There may be a minor deviation in the marks distribution.
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