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    Industrial Instrumentation

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    Nhân Phạm Đình
    The document discusses fundamentals of measurement systems, outlining their main elements like sensors that receive stimuli and transmit electrical signals, and applications in areas like process control where measurement systems are used to monitor and regulate variables like temperature, pressure, and chemical concentrations through devices like transmitters and data acquisition systems. Measurement involves comparing an unknown quantity to a standard or predefined value to determine its numerical magnitude.

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    Industrial Instrumentation

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    Nhân Phạm Đình
    24 views22 pages
    The document discusses fundamentals of measurement systems, outlining their main elements like sensors that receive stimuli and transmit electrical signals, and applications in areas like process control where measurement systems are used to monitor and regulate variables like temperature, pressure, and chemical concentrations through devices like transmitters and data acquisition systems. Measurement involves comparing an unknown quantity to a standard or predefined value to determine its numerical magnitude.

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    The document discusses fundamentals of measurement systems, outlining their main elements like sensors that receive stimuli and transmit electrical signals, and applications in areas like process control where measurement systems are used to monitor and regulate variables like temperature, pressure, and chemical concentrations through devices like transmitters and data acquisition systems. Measurement involves comparing an unknown quantity to a standard or predefined value to determine its numerical magnitude.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    24 views22 pages

    Industrial Instrumentation

    Uploaded by

    Nhân Phạm Đình
    The document discusses fundamentals of measurement systems, outlining their main elements like sensors that receive stimuli and transmit electrical signals, and applications in areas like process control where measurement systems are used to monitor and regulate variables like temperature, pressure, and chemical concentrations through devices like transmitters and data acquisition systems. Measurement involves comparing an unknown quantity to a standard or predefined value to determine its numerical magnitude.

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    © All Rights Reserved
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    Download as pptx, pdf, or txt
    of 22

    INDUSTRIAL

    INSTRUMENTATION
    Lecturer: Nguyen Duc Hoang
    Department of Control & Automation
    Faculty of Electrical & Electronics Engineering
    Ho Chi Minh City University of Technology
    Email: ndhoang@hcmut.edu.vn
    Chapter 1: Fundamentals of
    Measurement Systems

    • Introduction
    • Elements of a Measurement System
    • Choosing Appropriate Measuring Instruments
    • Measurement System Applications
    • Data acquisition system (DAQ)
    Introduction
    • Instrumentation is the science of automated measurement and
    control.
    • Applications of this science abound in modern research,
    industry, and everyday living.
    • automobile engine control systems
    • home thermostats
    • aircraft autopilots
    • manufacture of pharmaceutical drugs
    •…
    Measurement
    • Measurement of a given quantity is essentially an act or result of
    comparison between the quantity (whose magnitude is unknown)
    and predetermined or predefined standards.
    • Two quantities are compared the result is expressed in numerical
    values.
    • Examples:
    • Fluid pressure, • Fluid flow rate
    • The temperature of an object • Fluid volume stored in a vessel
    • Chemical concentration • Machine position, motion, or acceleration
    • Physical dimension(s) of an object • Count (inventory) of objects
    • Electrical voltage, current, or resistance
    Elements of a Measurement System
    Sensor
    • A sensor is a device that receives a stimulus and responds with an electrical
    signal.
    • Stimulus : measurand
    Group Discussion:
    Choosing Appropriate Measuring Instruments
    • What are the main factors governing the choice of a measuring instrument for a
    given application?
    Measurement System Applications
    • Automatic feedback control systems
    Measurement System Applications
    Example: boiler water level control system

    Level transmitter (pneumatic): sense the


    water level in the steam drum and report
    that measurement to the controller
    Example: wastewater disinfection
    Analytical Transmitter : analyze the
    concentration of chlorine dissolved in
    the water and transmit this information
    to the control system

    P&ID (Process and Instrument Diagram)


    Example: chemical reactor temperature control

    Instruments ?
    Output types ?
    Data acquisition system (DAQ)
    Data acquisition system (DAQ)
    Sensor system in modern car
    Wireless Parking Lot Sensor
    Data acquisition system (DAQ) - SCADA
    Problems
    • What are the main elements in a measurement system and what are their
    functions?
    • Which elements are not needed in some measurement systems and why are they
    not needed?
    • Name and discuss three application areas for measurement systems.
    Problems
    Answer
    Problems
    Answer

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