METROLOGY & INSTRUMENTATION
Metrology & Instrumentation
Course Objectives
The objectives of this course is to impart knowledge of
- To familiarize with Limits & fits, I.S.O. system and the instruments used to measure these
- limits.
- To have knowledge of various precision linear and angular measuring instruments.
- To learn the importance of form and how to measure form errors.
- To understand the working principles of various instruments used for the measurement of strain, forces, pressure, temperature and vibrations.
Course Outcomes
After completing this course, the student will be able to:
- To understand limits, fits and tolerances and their applications. Linear and angular
- measurements and measuring instruments.
- To understand the design of limit gauges, evaluate roughness and its measurement.
- To understand basic measuring system, static and dynamic characteristics of instruments
- To understand various principles to measure pressure, temperature, displacement, force, torque and vibrations.
Syllabus : [As Per Osmania University]
UNIT – IIntroduction to Limits, Fits,Tolerances as per ISO, types of interchangeability and limitgauges.Taylor's Principle of guage design, Uses of Plug, Ring and Snap gauges. Introduction toLinear and Angular measurements – Slip gauges and End bars – Gauge materials, Different types ofMicrometers, Height gauges Tomlinson gauges. Precision polygon, Sine bar, Auto collimator.UNIT – IIComparators: Dial indicators, Mechanism of Dial indicators, Mechanical comparators, Pneumaticcomparators, Optical comparators, Electrical comparators, Tool maker's Microscope and itsapplications. Measurement of Straightness and Flatness Roundness measurement with benchcenters and talyround.UNIT-IIIIntroduction to Surface Roughness Measurements, Profilometer, Taylor Hobson Talysurf.Application of Thread metrology - 2 wire and 3 wire methods, Gear measurement - Gear tooththickness, Parkinson gear tester, General geometric tests for testing machine tools – Lathe, drill andMill.UNIT –IVIntroduction to Elements of instrumentation - Static and Dynamic characteristics, Types of errors,Transducers, LVDT, Strain measurement -Wire and foil type resistance strain gauges. RosetteGauges,Bonding procedure Lead resistance compensation. Proving ring, Strain gauge load cells,measurement of axial load and torsion by strain gauges, Piezo-electric load cell.UNIT – V Introduction to Seismic Transducers -displacement and acceleration measurement, Pressuremeasurement -Bourdon pressure gauge, pirani gauge. Temperature measurement by thermo couples and its law.Types of materials used in thermocouples Protection tubes. Extension wire- Series and parallel circuit’s compensation.
Suggested Readings:1. I.C. Gupta – “Engineering metrology”, Dhanpat Rai Publications, New Delhi.2. Rega Rajendra, “Principles of Engineering Metrology”, Jaico Publishing House, Mumbai.3. RK Jain, "Engineering Metrology", Khanna Publications, 1996.4. Doeblin,"Measurement Systems Application and Design”, Tata Mc¬Graw Hill,5th ed.,2004.5. Beckwith, Buck, Lienhard, Mechanical Measurements, Paerson education india.6. P. Donald Echman, "Industrial Instrumentation", John Wiley and Sons, 1996.7. Hume, "Engineering Metrology", Kalyani Publications, 1985.
UNIT – I
Introduction to Limits, Fits,Tolerances as per ISO, types of interchangeability and limit
gauges.Taylor's Principle of guage design, Uses of Plug, Ring and Snap gauges. Introduction to
Linear and Angular measurements – Slip gauges and End bars – Gauge materials, Different types of
Micrometers, Height gauges Tomlinson gauges. Precision polygon, Sine bar, Auto collimator.
UNIT – II
Comparators: Dial indicators, Mechanism of Dial indicators, Mechanical comparators, Pneumatic
comparators, Optical comparators, Electrical comparators, Tool maker's Microscope and its
applications. Measurement of Straightness and Flatness Roundness measurement with bench
centers and talyround.
UNIT-III
Introduction to Surface Roughness Measurements, Profilometer, Taylor Hobson Talysurf.
Application of Thread metrology - 2 wire and 3 wire methods, Gear measurement - Gear tooth
thickness, Parkinson gear tester, General geometric tests for testing machine tools – Lathe, drill and
Mill.
UNIT –IV
Introduction to Elements of instrumentation - Static and Dynamic characteristics, Types of errors,
Transducers, LVDT, Strain measurement -Wire and foil type resistance strain gauges. Rosette
Gauges,Bonding procedure Lead resistance compensation. Proving ring, Strain gauge load cells,
measurement of axial load and torsion by strain gauges, Piezo-electric load cell.
UNIT – V
Introduction to Seismic Transducers -displacement and acceleration measurement, Pressure
measurement -Bourdon pressure gauge, pirani gauge. Temperature measurement by thermo couples and its law.Types of materials used in thermocouples Protection tubes. Extension wire- Series and parallel circuit’s compensation.
Suggested Readings:
1. I.C. Gupta – “Engineering metrology”, Dhanpat Rai Publications, New Delhi.
2. Rega Rajendra, “Principles of Engineering Metrology”, Jaico Publishing House, Mumbai.
3. RK Jain, "Engineering Metrology", Khanna Publications, 1996.
4. Doeblin,"Measurement Systems Application and Design”, Tata Mc¬Graw Hill,5th ed.,
2004.
5. Beckwith, Buck, Lienhard, Mechanical Measurements, Paerson education india.
6. P. Donald Echman, "Industrial Instrumentation", John Wiley and Sons, 1996.
7. Hume, "Engineering Metrology", Kalyani Publications, 1985.
Text Book / Reference
Optical Projector
Unit - II
Comparators: Dial indicator, Sigma and Mechanical comparator, Free flow and Back
pressure type Pneumatic comparator. Application of set jet gauge heads. Optical
projector, Chart, screen gauges and measuring methods, Micro-Gauge bridge lines.
Toolmaker‟s Microscope Applications.
Measurement of Straightness and-Flatness Roundness measurement with bench
centres and Talyround, Coordinate measuring Machine in components geometries.
UNIT-III :
Surface Roughness Measurements – parameters as per ISO indices. Profilometer,
Taylor Hobson Talysurf. Application of Thread metrology - 2 wire and 3 wire methods,
Gear measurement – Gear tooth thickness, Parkinson gear tester, General geometric
tests for testing machine tools – Lathe, drill and Mill.
Osmania University Question Papers
Metrology & Instrumentation - PC 604 ME
Notes Pertaining To Instrumentation - Unit 4 & 5 As per Osmania University Syllabus
Videos - Instrumentation [Unit IV &V]
Source : You Tube
To Be Continued.....
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