Electrical Instruments Library
Electrical Instrumentation Library
➣ Introduction➣ Classification of Measuring Instruments
➣ Essential Requirements of an instrument
➣ Deflecting System
➣ Controlling System
Gravity Control
Spring Control
Comparison of Controlling Systems
➣ Damping System
Air Friction Damping
Fluid Friction Damping
Eddy Current Damping
➣ D'Arsonval Galvanometr
Construction
Torque Equation
Instrinsic Constants of Galvanometer
Dynamic Behaviour of Galvanometer
➣ Permanent Magnet Moving Coil Instruments (PMMC)
Torque Equation
Advantages
Disadvantages
Taut Band Instrument
Temperature Compensation
Errors in PMMC Instrument
➣ Moving Iron Instruments
Moving Iron Attraction Type Instruments
Moving Iron Repulsion Type Instrument
Radial Vane Repulsion Type Instrument
Concentric Vane Repulsion Type Instrument
Torque Equation of Moving Iron Instruments
Advantages
Disadvantages
Errors in Moving Iron Instruments
➣ Electrodynamometer Type Instruments
construction
Torque Equation
Advantages of Electrodynamic Instruments
Disadvantages of Electrodynamic Instruments
Errors in Electrodynamic Instruments
➣ Basic D.C. Ammeter
➣ multirange ammeter
➣ The Ayrton Shunt or Universal Shunt
Precautions to be taken while using an ammeter
➣ Requirements of a Shunt
➣ Basic D.C. Voltmeter
➣ Multirange Voltmeter
Practicale Multirange Voltmeter
➣Sensitivity of Voltmeters
Loading effect
Precaution to be taken while using a voltmeter
Requirements of a multipliers
➣ Ammeter and Voltmeter
➣ Ferrodynamic Instruments
➣ Electrothermic Instrument
Classification of Electrothermic Instruments
➣ Hot Wire Instruments
Construction and Operation of Hot Wire Instruments
Derivation of Magnification Factor
Advantages
Disadvantages
➣ Thermocouple Instruments part 1 --- part 2
Principle of operation
Construction of Therrmocouple Instrument
Heater Element
Thermoelement
Action in Thermocouple Instrument
Advantages
Disadvantages
➣ Electrostatic Instruments
Principle of Operation
➣ Types of Electrostatic Voltmeters part1 --- part2
Quadrant Type Electrostatic Voltmeter
Heterostatic Connection
Theory of Heterostatic Connection
Idiostatic Connection
Theory of Idiostatic Connection
Kelvin Multicellular Voltmeter
➣ Attracted Disc Electrostatic Voltmeter
Kelvin Absolute Electrometer
➣ Advantages and Disadvantages of Electrostatic Instruments
➣ Extension of Range of Electrostatic Instruments
Resistance Potential Divider
Capacitance Multipliers
➣ AC Voltmeter using Rectifiers
First Rectifying and them Amplifying A.C. Signal
First Rectifying and them Rectifying A.C. Signal
➣ Basic Rectifier Type A.C. Voltmeter
➣ A.C. Voltmeter Using Half Wave Rectifier
➣ A.C. Voltmeter Using Full Wave Rectifier
➣ Advantages of Rectifier Instruments
➣ Limitations of Rectifier Instruments
Electrical Instruments Library
Reviewed by haru
on
November 05, 2017
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