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MEASUREMENT & METROLOGY ( NME-403 )

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a. Measurement and Instrumentation notes Unit 1
b. Measurement and Instrumentation notes Unit 2

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Syllabus of MEASUREMENT & METROLOGY ( NME-403 )

UNIT I
Mechanical Measurements: Introduction to measurement and measuring instruments.
General concept–Generalized measurement system and its elements-Unit sand standardsmeasuring
instruments: sensitivity, stability, range, accuracy and precision-static and dynamic
response- repeatability-systematic, Source of error, statistical analysis of error and random
errors- correction, calibration. Dimensional and geometric tolerance
Sensors and Transducers: Types of sensors, types of transducers and their characteristics.
UNIT II
Time Related Measurements: Stroboscope, frequency measurement by direct comparison.
Measurement of displacement
Measurement of Pressure: Gravitational, directing acting, elastic and indirect type pressure
transducers. Measurement of very low pressures (high vacuum).
Strain Measurement: Types of strain gauges and their working, strain gauge circuits,
temperature compensation. Strain rosettes, calibration.
UNIT III
Flow Measurement: Hot Wire Anemometry, Laser Doppler Velocimetry, Rotameter
Temperature Measurement: Thermometers, bimetallic thermocouples, thermistors and
pyrometers.
Measurements of Force, Torque: Different types of load cells, elastic transducers,
pneumatic & hydraulic systems. Seismic instruments
Measurements of Acceleration, and Vibration: Accelerometers vibration pickups and
decibel meters, vibrometers.
UNIT IV
Coordinate measuring machine (CMM): Need, constructional features and types,
Metrology and Inspection: Standards of linear measurement, line and end standards.
Interchange ability and standardization. Linear and angular measurements devices and
systems Comparators: Sigma, Johansson’s Microkrator. Limit gauges classification,
Taylor’s Principle of Gauge Design.
UNIT-V
Limits, Fits &Tolerance and Surface roughness: Introduction to Limits, Fits, Tolerances
and IS standards, Limit-gauges, and surface-roughness. Measurement of geometric forms like
straightness, flatness, roundness. Tool makers microscope, profile projector, autocollimator.
Interferometry: principle and use of interferometry, optical flat. Measurement of screw
threads and gears. Surface texture: quantitative evaluation of surface roughness and its
measurement.
Books and References:
1. Experimental Methods for Engineers by Holman, MCGRAW HILL INDIA
2. Mechanical Measurements by Beckwith, Pearson
3. Principles of Measurement Systems by Bentley, Pearson
4. Metrology of Measurements by Bewoor and Kulkarni, MCGRAW HILL INDIA
5. Measurement Systems, Application Design by Doeblein, MCGRAW HILL INDIA
6. Hume KJ, “Engineering Metrology”, MacDonald and Co
7. Jain, RK, “Engineering Metrology” Khanna Publishers
8. Jain, R.K., “Mechanical Measurement” Khanna Publishers
9.Gupta SC, Engineering Metrology, Dhanpat Rai Publications

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