CTU FEE Moodle
Electrical Measurements
B241 - Winter 2024/2025
This is a grouped Moodle course. It consists of several separate courses that share learning materials, assignments, tests etc. Below you can see information about the individual courses that make up this Moodle course.
Electrical Measurements - B2B38EMB
Main course
Credits | 4 |
Semesters | Winter |
Completion | Assessment + Examination |
Language of teaching | Czech |
Extent of teaching | 2P+2L |
Annotation
Methods of measurement of electrical quantities (voltage, current, power, frequency, resistance, capacitance, and inductance) are explained together with principles of their correct application and accuracy estimation. The course is closed by presenting information on several basic electronic measuring instruments and explaining the fundamentals of magnetic measurements and basic information concerning measurement systems.
Study targets
To acquaint students with methods of measurement of electric, magnetic and selected physical quantities and used instruments including principles of their correct application and accuracy estimation.
Course outlines
1. Introduction - measuring chain, the accuracy of measurement - evaluation of uncertainties of direct and indirect measurements, the error of method and its correction.
2. Instruments for voltage and current measurement.
3. Measuring amplifiers with OA, converters of average and of RMS value, phase-sensitive rectifier.
4. Converters for sum and difference measurement, analog multipliers, measurement of frequency and phase shift.
5. AC or DC current and voltage measurement - standards, methods, and instruments
6. Principle of sampling and quantization of analog signal, DACs, and ADCs - principle, and properties.
7. Measurement of resistance - converter R - U; methods for low and high resistance measurement, unbalanced Wheatstone bridge for sensor application.
8. Present-day digital multimeters, common mode rejection, the principle of autocalibration and software calibration.
9. Measurement of power - definition, measuring methods, digital wattmeter; measurement of energy consumption.
10. Measurement of impedance and admittance in LF range - bridges, the principle of digital LCR meters.
11. Measurement of DC and LF magnetic field, measurement of parameters and characteristics of ferromagnetic materials.
12. Analog and digitizing oscilloscopes, passive oscilloscope probe.
13. LF generators of measuring signals.
14. Data acquisition systems - overview and application, GP-IB measuring system, DAQ systems based on plug-in boards, software for DAQ systems - an overview.
2. Instruments for voltage and current measurement.
3. Measuring amplifiers with OA, converters of average and of RMS value, phase-sensitive rectifier.
4. Converters for sum and difference measurement, analog multipliers, measurement of frequency and phase shift.
5. AC or DC current and voltage measurement - standards, methods, and instruments
6. Principle of sampling and quantization of analog signal, DACs, and ADCs - principle, and properties.
7. Measurement of resistance - converter R - U; methods for low and high resistance measurement, unbalanced Wheatstone bridge for sensor application.
8. Present-day digital multimeters, common mode rejection, the principle of autocalibration and software calibration.
9. Measurement of power - definition, measuring methods, digital wattmeter; measurement of energy consumption.
10. Measurement of impedance and admittance in LF range - bridges, the principle of digital LCR meters.
11. Measurement of DC and LF magnetic field, measurement of parameters and characteristics of ferromagnetic materials.
12. Analog and digitizing oscilloscopes, passive oscilloscope probe.
13. LF generators of measuring signals.
14. Data acquisition systems - overview and application, GP-IB measuring system, DAQ systems based on plug-in boards, software for DAQ systems - an overview.
Exercises outlines
1. Measurement using laboratory oscilloscope
2. Frequency dependence of AC voltmeters
3. Measurement on the voltage divider
4. Measurement of low currents
5. Measuring amplifiers
6. Influence of the waveform of measured voltage on the meter reading
7. Measuring rectifier
8. Power and power factor measurement for single phase
9. Measurement of frequency and period time using a counter
10. Demonstration of signal sampling
11. Digital storage oscilloscope and arbitrary waveform generator
12. Measurement of low resistances
13. Digital measurement system using GPIB
14. Digital impedance and admittance meter
15. Measurement of amplitude permeability
16. Unbalanced Wheatstone bridge
17. Measurement of the leakage magnetic field
Individual work
2. Frequency dependence of AC voltmeters
3. Measurement on the voltage divider
4. Measurement of low currents
5. Measuring amplifiers
6. Influence of the waveform of measured voltage on the meter reading
7. Measuring rectifier
8. Power and power factor measurement for single phase
9. Measurement of frequency and period time using a counter
10. Demonstration of signal sampling
11. Digital storage oscilloscope and arbitrary waveform generator
12. Measurement of low resistances
13. Digital measurement system using GPIB
14. Digital impedance and admittance meter
15. Measurement of amplitude permeability
16. Unbalanced Wheatstone bridge
17. Measurement of the leakage magnetic field
Individual work
Literature
[1] Placko, D.: Fundamentals of Instrumentation and Measurement, ISTE 2007, ISBN 1 905209 39 8
[2] Northrop, R.B.: Introduction to Instrumentation and Measurements, CRC 2005, 0-8493-3773-9
[2] Northrop, R.B.: Introduction to Instrumentation and Measurements, CRC 2005, 0-8493-3773-9
Requirements
Physics 1, Fundamentals of Electric Circuits
Electrical Measurements and Instrumentation - A2B38EMB
Credits | 5 |
Semesters | Winter |
Completion | Assessment + Examination |
Language of teaching | Czech |
Extent of teaching | 2P+2L |
Annotation
Methods of measurement of electrical physical quantities (voltage, current, power, frequency, resistance, capacitance and inductance) are explained together with principles of their correct application and accuracy estimation. The course is closed by presenting information of several basic electronic measuring instruments and explaining fundamentals of magnetic measurements and basic information concerning measurement systems.
Study targets
Students should be acquainted with fundamentals of electrical (and magnetic) measurement and instrumentation, I particular with measuring methods, current used instruments and their basic parts, their properties and correct application including their integration into data acquisition systems.
Course outlines
1. Introduction - measuring chain, accuracy of measurement - evaluation of uncertainties of direct and indirect measurements, error of method and its correction.
2. Instruments for voltage and current measurement (analog, digital).
3. Measuring amplifiers with OA, converters of average and of RMS value, phase-sensitive rectifier.
4. Converters for sum and difference measurement, analogue multipliers, measurement of frequency and phase shift.
5. AC or DC current and voltage measurement - standards, methods and instruments
6. Principle of sampling and quantisation of analogue signal, DACs and ADCs - principle and properties.
7. Measurement of resistance - converter R → U; methods for low and high resistance measurement, unbalanced Wheatstone bridge for sensor application.
8. Present-day digital multimeters, common mode rejection, principle of autocalibration and software calibration.
9. Measurement of power - definition, measuring methods, digital wattmeter; measurement of energy consumption.
10. Measurement of impedance and admittance in LF range - bridges, principle of digital LCR meters.
11. Measurement of DC and LF magnetic field, measurement of parameters and characteristics of ferromagnetic materials.
12. Analogue and digitising oscilloscopes, passive oscilloscope probe.
13. LF generators of measuring signals..
14. Data acquisition systems - overview and application, GP-IB measuring system, DAQ systems based on plug-in boards, software for DAQ systems - overview.
2. Instruments for voltage and current measurement (analog, digital).
3. Measuring amplifiers with OA, converters of average and of RMS value, phase-sensitive rectifier.
4. Converters for sum and difference measurement, analogue multipliers, measurement of frequency and phase shift.
5. AC or DC current and voltage measurement - standards, methods and instruments
6. Principle of sampling and quantisation of analogue signal, DACs and ADCs - principle and properties.
7. Measurement of resistance - converter R → U; methods for low and high resistance measurement, unbalanced Wheatstone bridge for sensor application.
8. Present-day digital multimeters, common mode rejection, principle of autocalibration and software calibration.
9. Measurement of power - definition, measuring methods, digital wattmeter; measurement of energy consumption.
10. Measurement of impedance and admittance in LF range - bridges, principle of digital LCR meters.
11. Measurement of DC and LF magnetic field, measurement of parameters and characteristics of ferromagnetic materials.
12. Analogue and digitising oscilloscopes, passive oscilloscope probe.
13. LF generators of measuring signals..
14. Data acquisition systems - overview and application, GP-IB measuring system, DAQ systems based on plug-in boards, software for DAQ systems - overview.
Exercises outlines
1. Introduction, safety in lab, oscilloscope - basic control and measurement.
2. Frequency dependence of AC voltmeters. Voltage divider.
3. Low currents measurement. Measuring amplifiers (low DC voltage).
4. Influence of form factor on meter readings. Measuring rectifier.
5. One-phase power measurement. Frequency and period measurement.
6. Principle of signal sampling. Test I.
7. Digitising oscilloscope + arbitrary generatior, application of passive probe. Measurement of low resistances.
8. IEEE 488 measurement system. Test II
9. Digital impedance and admittance meter.
10. Amplitude permeability measurement. Test III
11. Imballanced Wheatstone bridge - application for resistance changing transducers
12. Measurement of the leakage magnetic field of the transformer.
13. Solving individual measurement task
14. Solving individual measurement task
2. Frequency dependence of AC voltmeters. Voltage divider.
3. Low currents measurement. Measuring amplifiers (low DC voltage).
4. Influence of form factor on meter readings. Measuring rectifier.
5. One-phase power measurement. Frequency and period measurement.
6. Principle of signal sampling. Test I.
7. Digitising oscilloscope + arbitrary generatior, application of passive probe. Measurement of low resistances.
8. IEEE 488 measurement system. Test II
9. Digital impedance and admittance meter.
10. Amplitude permeability measurement. Test III
11. Imballanced Wheatstone bridge - application for resistance changing transducers
12. Measurement of the leakage magnetic field of the transformer.
13. Solving individual measurement task
14. Solving individual measurement task
Literature
[1] V. Haasz, M. Sedláček: Electrical Measurements, University Textbook, Publishing House of CTU in Prague, Prague, 2006
[2] M. Sedláček, J. Holub, D. Hejtmanová: Laboratory Exercises in Electrical Measurements, Publishing House of CTU in Prague, Prague, 2011
[3] Placko D. : Fundamentals of Instrumentation and Measurement, ISTE 2007, ISBN 1 905209 39 8
[4] Northrop R.B.: Introduction to Instrumentation and Measurements, CRC 2005, 0-8493-3773-9
[2] M. Sedláček, J. Holub, D. Hejtmanová: Laboratory Exercises in Electrical Measurements, Publishing House of CTU in Prague, Prague, 2011
[3] Placko D. : Fundamentals of Instrumentation and Measurement, ISTE 2007, ISBN 1 905209 39 8
[4] Northrop R.B.: Introduction to Instrumentation and Measurements, CRC 2005, 0-8493-3773-9
Requirements
Knowledge of courses: Electronic components, Signals and systéme, Fundamentals of electrical circuits