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Introduction of Instrument Transformers. Instrument Transformers are used in AC system for measurement of electrical quantities i.e. voltage,current, power, energy, power factor, frequency. Instrument transformers are also used with protective relays for protection of power system.
SYLLABUS. ELECTRICAL MEASUREMENTS & INSTRUMENTATION (3-1-0) . MODULE-I (10 HOURS) . Measuring Instruments: Classification, Absolute and secondary instruments, indicating instruments, control, balancing and damping, constructional details, characteristics, errors in measurement, Ammeters, voltmeters: (DC/AC) PMMC, MI, Electrodynamometer type .
Instrumentation is the art of measuring the value of some plant parameter, pressure, flow, level or temperature to name a few and supplying a signal that is proportional to the measured parameter.
A guide to the use, selection, and limitations of electrical instruments and measurement systems. Textbook.
Fundamentals of Instrumentation and Measurement. Edited by Dominique Placko. First published in France in 2000 by Hermès Science Publications in two volumes entitled “Mesure et Instrumentation” Published in Great Britain and the United States in 2007 by ISTE Ltd .
ELECTRICAL MEASUREMENT AND INSTRUMENTATION (i) Indicating Instruments: Indicating instruments are those which indicate the magnitude of an electrical quantity at the time when it is being measured. The indications are given by a pointer moving over a calibrated (pregraduated) scale.
Part 1: Principles of Measurement 1 1 INTRODUCTION TO MEASUREMENT 3 1.1 Measurement units 3 1.2 Measurement system applications 6 1.3 Elements of a measurement system 8 1.4 Choosing appropriate measuring instruments 9 2 INSTRUMENT TYPES AND PERFORMANCE CHARACTERISTICS 12 2.1 Review of instrument types 12 2.1.1 Active and passive instruments 12
Appreciation of the methods used in instrumentation and measurements can be assisted by categorising them into three broad groups under the headings of analogue, comparison and digital methods.
The book starts with explaining the theory of measurement including characteristics of instruments, classification, standards, statistical analysis and limiting errors. Then the book explains the...
Summary. Electrical instruments depend on the mechanical movement of an indicating device having some inertia and thus have a limited time response. The detector, intermediate transfer device and induction are used for the detection of electromagnetic produced signals such as radio, video and microwave space applications and computers.