Measurement and Instrumentation Principles doc

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Measurement and Instrumentation Principles doc

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[...]... blocks (slip gauges) and length bars 21.1.5 Height and depth measurement 21.2 Angle measurement 21.3 Flatness measurement 21.4 Volume measurement 21.5 Viscosity measurement 21.5.1 Capillary and tube viscometers 21.5.2 Falling body viscometer 21.5.3 Rotational viscometers 21.6 Moisture measurement 21.6.1 Industrial moisture measurement techniques 21.6.2 Laboratory techniques for moisture measurement 419... their knowledge of the latest developments in measurement theory and practice, and also to serve as a guide to the typical characteristics and capabilities of the range of sensors and instruments that are currently in use The text is divided into two parts The principles and theory of measurement are covered first in Part 1 and then the ranges of instruments and sensors that are available for measuring... material that was previously published in Measurement and Calibration Requirements for Quality Assurance to ISO 9000 by A S Morris (published 1997) The material involved are Tables 1.1, 1.2 and 3.1, Figures 3.1, 4.2 and 4.3, parts of sections 2.1, 2.2, 2.3, 3.1, 3.2, 3.6, 4.3 and 4.4, and Appendix 1 Part 1 Principles of Measurement 1 Introduction to measurement Measurement techniques have been of immense... 7750 and ISO 14000) Thus, an up-to-date book incorporating all of the latest developments in measurement is strongly needed With so much new material to include, the opportunity has been taken to substantially revise the order and content of material presented previously in Principles of Measurement and Instrumentation, and several new chapters have been written to cover the many new developments in measurement. .. measurement and instrumentation that have occurred over the past few years To emphasize the substantial revision that has taken place, a decision has been made to publish the book under a new title rather than as a third edition of the previous book Hence, Measurement and Instrumentation Principles has been born The overall aim of the book is to present the topics of sensors and instrumentation, and their... radius) The number of atoms in a 0.012 kg mass of carbon-12 Measurement and Instrumentation Principles 5 Table 1.2 Fundamental and derived SI units (a) Fundamental units Quantity Standard unit Symbol Length Mass Time Electric current Temperature Luminous intensity Matter metre kilogram second ampere kelvin candela mole m kg s A K cd mol Quantity Standard unit Symbol Plane angle Solid angle radian steradian... discussion of measurement system errors then follows, with appropriate procedures for quantifying and reducing errors being presented The importance of calibration procedures in all aspects of measurement systems, and particularly to satisfy the requirements of standards such as ISO 9000 and ISO 14000, is recognized by devoting a full chapter to the issues involved This is followed by an analysis of measurement. .. such systems use as their inputs This disregard of measurement system quality and performance means that such control systems will never achieve their full xviii Preface potential, as it is very difficult to increase their performance beyond the quality of the raw measurement data on which they depend Ideally, the principles of good measurement and instrumentation practice should be taught throughout... similar fashion, standard units for the measurement of other physical quantities have been defined and progressively improved over the years The latest standards for defining the units used for measuring a range of physical variables are given in Table 1.1 The early establishment of standards for the measurement of physical quantities proceeded in several countries at broadly parallel times, and in consequence,... transmission and signal display or recording Ancillary issues, such as calibration and measurement system reliability, are also covered Discussion starts with a review of the different classes of instrument and sensor available, and the sort of applications in which these different types are typically used This opening discussion includes analysis of the static and dynamic characteristics of instruments and . class="bi x0 y0 w0 h0" alt="" Measurement and Instrumentation Principles To Jane, Nicola and Julia Measurement and Instrumentation Principles Alan S. Morris OXFORD AUCKLAND BOSTON JOHANNESBURG MELBOURNE. order and content of material presented previously in Principles of Measurement and Instrumentation, and several new chapters have been written to cover the many new developments in measurement and. book. Hence, Measurement and Instrumentation Principles has been born. The overall aim of the book is to present the topics of sensors and instrumentation, and their use within measurement systems,

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Mục lục

  • Measurement and Instrumentation Principles

  • 1.3 Elements of a measurement system

  • 1.4 Choosing appropriate measuring instruments

  • 2. Instrument types and performance characteristics

    • 2.1 Review of instrument types

      • 2.1.1 Active and passive instruments

      • 2.1.2 Null-type and deflection-type instruments

      • 2.1.3 Analogue and digital instruments

      • 2.1.4 Indicating instruments and instruments with a signal output

      • 2.1.5 Smart and non-smart instruments

      • 2.2 Static characteristics of instruments

        • 2.2.1 Accuracy and inaccuracy (measurement uncertainty)

        • 3.2 Sources of systematic error

          • 3.2.1 System disturbance due to measurement

          • 3.2.2 Errors due to environmental inputs

          • 3.2.3 Wear in instrument components

          • 3.3.2 Method of opposing inputs

          • 3.3.5 Manual correction of output reading

          • 3.4 Quantification of systematic errors

          • 3.5 Random errors

            • 3.5.1 Statistical analysis of measurements subject to random errors

            • 3.5.2 Graphical data analysis techniques - frequency distributions

            • 3.6 Aggregation of measurement system errors

              • 3.6.1 Combined effect of systematic and random errors

              • 3.6.2 Aggregation of errors from separate measurement system components

              • 3.6.3 Total error when combining multiple measurements

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