Measurements and Measurement Instrumentation

Higher education teachers: Agrež Dušan
Collaborators: Begeš Gaber, Beguš Samo, Geršak Gregor, Hudoklin Domen
Credits: 4
Semester: winter
Subject code: 64631

Subject description


  • Enrolment in the second academic year

Content (Syllabus outline):

  • Fundamental principles and strategies of measurements;
  • Measuring accuracy and uncertainty (absolute and relative errors, measurement result, true value, statistic analysis, measurement uncertainty), signal conditioning;
  • Metrology systems (quantities, units and realization, etalons, disemination, traceability, calibration, conformity assessment);
  • Measurement of electrical quantities (voltage, current, power, resistance, capacitance, inductance, frequency, phase angle, power factor, frequency spectrum, ...);
  • Application of basic measuring instrumentation (ammeter, voltmeter, wattmeter, oscilosscope, , etc.);
  • Structure of measuring instruments and systems (structure and elements, static and dynamic characteristics, influence quantities, analog and digital conditioning and signal processing).
  • Electronic measurement instruments (multi-meter, digital electronic osciloscop, universal counter, instrument with computer and wirtuak instrumentation) and suitable signal conditioning circuts (shunts, voltage dividers, measurement transformers, etc.);
  • Reduction of the influence of disturbing signals and measurement bridges;
  • Measurement of non-electrical quantities (temperature, humidity, preasure, force, lenght, noise, etc.).

Objectives and competences:

  • To introduce the basic principles of measurement of most important quantities in engineering, properties of measurement signals;
  • To introduce the basic principles of digitalization of the measurement signals in the time and frequency domain;
  • To learn the approaches and methods of measurement of basic electric quantities and caracteristics of measurement transducers;
  • To study the meaning of statistic and analysis of measurement uncertainty;
  • To study the fundamentals of metrology and metrological systems, Si units, connections with other fields of science;
  • Introduction in the laboratory-instrumentation practices and to learn the security requirements and protection in measurements.

Intended learning outcomes:

  • To get information and adopt the basics of metrology;
  • Understanding of methods how to measure basic elektromagnetic and non-electric quantities;
  • To know how to express the mesasurement results with measurement uncertainty.

Learning and teaching methods:

  • Lectures,
  • laboratory tutorials,
  • laboratory work in small groups.

Study materials


  1. Bentley, J.P., Principles of Measurement Systems (4. edition), Pearson, Prentice Hall, 2005.
  2. Morris A.S., Measurement and Instrumentation Principles, Third Edition, Oxford: Butterworth-Heinemann, 2010.
  3. Agrež D. in ostali, Meritve in merilna instrumentacija - laboratorijski praktikum (ver. 3), University of Ljubljana, Faculty of Electrical Engineering, 2013.
  4. Tumanski S., Principles of Electrical Measurement, Taylor & Francis, CRC Press, 2006.
  5. Evaluation of measurement data - Guide to the expression of uncertainty in measurement International Joint Committee for Guides in Metrology, 2008, (

Study in which the course is carried out

  • 2 year - 1st cycle - Applied Electrical Engineering - Electronics