JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisites

Chemical Engineering Fluid Mechanics and Process Heat Transfer

Course Objectives

The subject is designed to understand the fundamentals and principles of

Process Control and instrumentation It also provides the details of performance characteristics and applications of various instruments used in petroleum industry.

Course Outcomes

The student would be able to understand Process modeling fundamentals,

idealized dynamic behavior, transfer functions, control system context like evaluate stability, frequency response, and other characteristics relevant to process control.

UNIT - I

Elements of instruments, static and dynamic characteristics, mercury in glass thermometer, bimetallic thermometer, pressure spring thermometer, static accuracy. Thermo electricity: Industrial thermocouples, thermocouple wires, thermo couple wells Composition analysis, spectroscopic analysis by absorption, emission, mass and color measurement by spectrometers, gas analysis by thermal conductivity, analysis of moisture, gas chromatography, refractometer

UNIT - II

Measurement of Pressure and vacuum: liquid column manometers, measuring elements for gauge pressure and vacuum, indicating elements for pressure gauges, measurement of absolute pressure, measuring pressure in corrosive liquids Measurement of head and level: Head, density and specific gravity, direct measurement of liquid level, pressure measurement in open vessels, level measurements in pressure vessels.. velocity meters, quantity meters, viscosity measurements. Recording instruments, indicating and signalling instruments, transmission of instrument readings, control center, instrumentation diagram

UNIT - III

Introduction to process control: Response of First order systems, Transfer Function of mercury thermometer, Transient response to step, impulse, sinusoidal forcing function, physical examples of first order systems, liquid level, mixing process, RC circuit, response of first order systems in series: Noninteracting and interacting systems

UNIT - IV

Response of Second order system to step, impulse and sinusoidal forcing function. Transportation lag .

R16 B.TECH PETROLEUM ENGG.

The control system: Servo and Regulatory control problems, Development of Block diagram, Controllers and final control elements, Ideal transfer functions of P, PI, PD and PID Controllers. closed loop transfer functions, Stability: Stability analysis by Routh’s Criterion

UNIT - V

Root locus: concept of root locus, plotting the root locus diagram. Introduction to frequency response: substitution rule, Bode diagrams for First order, first order systems in series, second order system and for controllers and transportation lag. Bode stability criterion. Gain margin and phase margin, Z-N controller settings

TEXT BOOKS:

• 1. Industrial instrumentation by Donald P. Eckman, Wiley eastern, 1950.
• 2. Donald R. Coughanowr, Process Systems Analysis and Control, 2 nd edition McGraw- Hill,1991

REFERENCE BOOKS:

• 1. Principles of industrial instrumentation by Patra Nabis, TMH.
• 2. Chemical Process Control Stephanoupoulous, G., Prentice Hall, India New Delhi. 1990. R16 B.TECH PETROLEUM ENGG.