Metrology

The course is a substitute for:

Metrology of Electrical Quantities (X38MET)

Lecturer:

Tutor:

Supervisor:

Department of Measurement

Synopsis:

After a brief introduction devoted to legal metrology, metrological directives and tests of measuring instruments, explanation is focussed on methods and devices for precision measurements of electrical quantities. Possibilities of application of NMR, Josephson arrays and quantum Hall effect devices to precision measurements of current, voltage and resistance are discussed.

Requirements:

Syllabus of lectures:

1. Legal metrology and its role. Convention du Metre

2. Metrological directives and legal units of measurement

3. Voltage inductive ratio devices and improvement of their metrological parameters

4. Current inductive ratio devices and improvement of their metrological parameters

5. Calibration of inductive ratio devices and current instrument transformers

6. Methods for precision measurement of electrical current

7. Methods for precision measurement of voltage. Modern potentiometers

8. Precision measurement of voltage in audiofrequency range

9. Precision measurement of power and energy

10. Methods for precision DC measurements of electrical resistance

11. Bridges with inductively coupled ratio arms for AC measurements of electrical resistance

12. Transformer and current-comparator-based capacitance bridges

13. Bridge methods for measuring self- and mutual inductance

14. Metrological employment of Thompson-Lampard theorem and quantum Hall effect

Syllabus of tutorials:

1. Directives for metrological tests of measuring devices

2. Directives for metrological tests of measuring devices

3. Verification of resistance standards and boxes

4. Verification of resistance standards and boxes

5. Verification of resistance standards and boxes

6. Verification of analogue and digital measuring instruments

7. Verification of analogue and digital measuring instruments

8. Verification of analogue and digital measuring instruments

9. Application of Hamon transfer devices to precision measurement of resistance ratios

10. Bridges for precision measurement of R, C, L and M

11. Bridges for precision measurement of R, C, L and M

12. Bridges for precision measurement of R, C, L and M

13. Bridges for precision measurement of R, C, L and M

14. Visit to the Czech Metrological Institute

Study Objective:

Study materials:

1. Elmquist R. E. et al.: The ampere and electrical standards. J. Res. Natl.

Inst. Stand. Technol., 2001, vol. 106, pp. 65-103

2. Kibble B. P. and Rayner G. H.: Coaxial AC bridges. Adam Hilger, Bristol

1984

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans: