Electrical Measurements and Instrumentation

Lecturer:

Miloš Sedláček (gar.)

Tutor:

Miloš Sedláček (gar.)

Supervisor:

Department of Measurement

Synopsis:

The subject is focused to fundamentals of measurement and instrumentation. Based on the principle of the methods of electrical quantities measurement (voltage, current, power, frequency, resistance, capacitance and inductance) a structure and properties of measuring instruments are explained including principles of their correct application and an accuracy estimation. Fundamentals of magnetic measurements close the course.

Requirements:

Syllabus of lectures:

1. Introduction. Analogue meters (PMMC meter, iron vane and electrodynamic meters).

2. Accuracy of measurement - evaluation of uncertainties of direct and indirect measurements, error of method and its correction.

3. Measuring amplifiers with OA, converters of average value, phase-sensitive rectifier.

4. Measurement of frequency, period and phase shift.

5. Converters for sum and difference measurement, analogue multipliers, integrator.

6. Measurement of resistance

7. Measurement of power; measurement of energy consumption.

8. Measurement of impedance and admittance (R-L, C-G)

9. Converters of electric quantities.

10. Measurement of magnetic quantities.

11. Measurement of DC current and voltage.

12. Measurement of AC current and voltage.

13. A/D and D/A converters.

14. Electronic measuring instruments; sensors.

Syllabus of tutorials:

1. Introduction, safety in lab, oscilloscope - basic control and measurement

2. Frequency dependence of AC voltmeters. Influence of form factor on meter readings

3. Voltage divider, error of method, evaluation of uncertainties

4. Currents measurement

5. Measuring amplifiers

6. Frequency and period measurement

7. Measurement of the leakage magnetic field of the transformer

8. One-phase power measurement, current instrument transformer

9. Measurement of resistances

10. Amplitude permeability measurement

11. Three-phase power measurement, electricity meters

12 Digital impedance and admittance meter

13. Final test, assessment

Study Objective:

Study materials:

[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

[3] V. Haasz, M. Sedláček: Electrical Measurements. University textbook, Publishing House of CTU in Prague, Prague, 2006

[4] M. Sedláček, J. Holub, D. Hejtmanová: Laboratory Exercises in Electrical Measurements. Publishing House of CTU in Prague, Prague, 2005

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans:

• Electrical Engineering, Power Engineering and Management - Applied Electrical Engineering (compulsory course in the program)
• Electrical Engineering, Power Engineering and Management - Electrical Engineering and Management (compulsory course in the program)
• Electrical Engineering, Power Engineering and Management (compulsory course in the program)