Syllabus - Chemical Instrumentation (CM305)

Chemical Engineering

Chemical Instrumentation (CM305)

III-Semester

Unit I

Introduction

Chemical process instrumentation, Choice of Instruments for a Specific Application Process variables, static and dynamic characteristics of instruments & their general classification, Elements of Measuring systems & their functions, True value, Measured Value, Errors, Classification Of Errors and Methods of Reducing errors.

Unit II

Temperature of Humidity Measurement

Principle, construction and operation of instruments filled thermometers, Vapour Pressure for the measurement of Temperature: Liquid Thermometers, Thermometers based on solid expansion like bimetallic type, Thermocouples, Resistance thermometers, Radiation Pyrometers, Optical Pyrometers, Photo electric Pyrometers. Principle, construction and operation of instruments for the measurement of Humidity and moisture

Unit III

Pressure Measurement

Principle, construction and operation of instruments for the measurement of pressure and Vacuum: Mechanical Pressure sensors e.g. Bourdon Tube, Diaphragm Pressure Elements, Bellows, Electrical Pressure Measuring Devices e.g. capacitance Manometer, Strain Gauge Pressure Transducers, Piezo Resistive Pressure Transducers, Resistive Pressure Transducers, LVDT Pressure Transducer. Measurement Of vacuum e.g Mcleod Gauge , Pirani gauge, Ionization gauge.

Unit IV

Flow Measurement

Principle, construction and operation of instruments for the measurement of Flow e.g. Variable Head flow meters, Variable Area flow meters, Hot Wire Anemometer, Principle, construction and operation of instruments for the measurement of Level e.g. Float and Displacer type Devices, Hydrostatic Methods, Capacitance type Devices , Radiation type Devices. Principle, construction and operation of instruments for the measurement of Density and Viscosity.

Unit V

Composition Measurement

Principle, construction and operation of instruments for the measurement of Composition e.g. Thermal conductivity analyzers, Paramagnetic Analyzers, Spectroscopic Methods, Gas Chromatograph, Process instrumentation diagrams and symbols, process instrumentation for process equipments such as Distillation column Absorption column, Heat Exchanger, Reactors, Evaporators, fluid storage vessels

Course Objective

To gain the knowledge of different process instruments, which used in different chemical industries such as refineries, cement, polymer, insecticides, pesticides, fertilizers etc.

Course Outcome

["Ability to familiarize basic concepts of chemical process instrumentation.", "Ability to understand principle construction and operation of instrument for measurement.", "Ability to understand control/recording of process variable like pressure flow level, humidity and composition.", "Ability to familiarize principles of electromagnetic pneumatic, electrical and multipressure transducers.", "Ability to design instrumentation diagrams for process equipment such as distillation column, heat exchanger and fluid storage vessel"]

Practicals

  • Time constant of pH-meter

  • Study of Bourdon tube pressure gauge

  • Study of Bellow tube pressure gauge

  • Calibration of different instruments used in chemical processes

  • Study of electro-pneumatic transducers for pressure, flow, level

  • Measurement of water level using differential pressure meter

  • Measurement of flow using electromagnetic flow meter

  • Measurement of flow using differential pressure cell across orifice/ venturimeter.

Reference Books

  • Albert D. Cooper-Modern Electronic Instrumentation, PHI

  • Eckman-Industrial Instrumentation

  • H.S. Kalsi-Electronic Instrumentation

  • Curties Johnson-Process Control Instrumentation Technique, IV Edn, PHI

  • Harriot; Process control; TMH

  • Patranabis; Principles of process control; TMH

  • Jaggi, Mathur; Engineering Mathematics; Khanna Publisher.

  • B.G. Liptak-Instrument Engineering ‘Handbook, Volume 1: Process Measurement

  • Austin E. Fribance-Industrial Instrumentation Fundamentals, New York: Mcgraw-Hill 1962

  • Ernest Doebelin-Measurement Systems: Application and Design, McGraw-Hill