JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives:

• Understand the basic knowledge of the physical parameters like Pressure, Temperature, flow, level, density and viscosity employed in different Industries.
• Grasp sound knowledge about various techniques used for the measurement of industrial parameters.
• Understand the construction and working of measuring instruments.
• Analyze need and necessity of measuring instruments.

Course Outcomes

After completion of the course the student is able to:

• Acquire adequate knowledge about process transducers.
• Acquire adequate knowledge about the temperature standards, thermocouples and pyrometry techniques.
• Study area flow meters, mass flow meters and calibration.
• Understand various types of level measurements adopted in industry environment.

UNIT - I

Metrology: Measurement of length - Gauge blocks – Plainness – Area using Simpson‘s rule, Planimeter – Diameter – Roughness – Angle using Bevel protractor, sinebars and Clinometer – Mechanical, Electrical, Optical and Pneumatic Comparators. Optical Methods for length and distance measurements using Optical flats and Michelson Interferometer. Velocity and Acceleration Measurement Relative velocity – Translational and Rotational velocity measurements – Revolution counters and Timers - Magnetic and Photoelectric pulse counting stroboscopic methods. Accelerometers-different types, Gyroscopes-applications.

UNIT - II

Force Measurement: Force measurement – Different methods –Gyroscopic Force Measurement – Vibrating wire Force transducer. Pressure Measurement: Basics of Pressure measurement –Manometer types – Force-Balance and Vibrating Cylinder Transducers – High- and Low-Pressure measurement – McLeod Gauge, Knudsen Gauge, Momentum Transfer Gauge, Thermal Conductivity Gauge, Ionization Gauge, Dual Gauge Techniques, Deadweight Gauges, Hydrostatic Pressure Measurement

UNIT - III

Flow Measurement and Level Measurement: Flow Meters- Head type, Area type (Rota meter), electromagnetic type, Positive displacement type, mass flow meter, ultrasonic type, vertex shedding type, Hotwire anemometer type, Laser Doppler Velocity-meter. Basic Level measurements – Direct, Indirect, Pressure, Buoyancy, Weight, Capacitive Probe methods

UNIT - IV

Density, Viscosity and other Measurements Density measurements – Strain Gauge load cell method – Buoyancy method - Air pressure balance method – Gamma ray method – Vibrating probe method. Units of Viscosity, specific gravity scales used in Petroleum Industries, Different Methods of measuring consistency and Viscosity –Two float viscorator –Industrial consistency meter. Sound- Level Meters, Microphones, Humidity Measurement

R18 B.Tech. EIE

UNIT - V

Calibration and Interfacing Calibration using Master Sensors, Interfacing of Force, Pressure, Velocity, Acceleration, Flow, Density and Viscosity Sensors, Variable Frequency Drive

TEXT BOOKS

• 1. Measurement Systems – Applications and Design – by Doeblin E.O., 4/e, McGraw Hill International, 1990.
• 2. Principles of Industrial Instrumentation – Patranabis D. TMH. End edition 1997

REFERENCE BOOKS

• 1. Process Instruments and Control Handbook – by Considine D.M., 4/e, McGraw Hill International, 1993.
• 2. Mechanical and Industrial Measurements – by Jain R.K., Khanna Publishers, 1986.
• 3. Instrument Technology, vol. I – by Jones E.B., Butterworths, 1981. R18 B.Tech. EIE