Metrology

Subject description

EU classification of metrology (legal, scientific, industrial), international organizations (BIPM, OIML, EURAMET)
Basic SI units, definitions and realizations (realization of basic SI units in Slovenia)
Basic metrological terms (uncertainty, correction, systematic error, …)
Measurement uncertainty (type A(statistical) and type B(non-statistical))
Typical uncertainty sources, estimation and calculation of uncertainty, calibration procedures, examples from different technical areas
Basic probability and information theory in measurements
Modern software and hardware tools in metrological laboratories (emphasizes on basic SI units)

The subject is taught in programs

Objectives and competences

The objective of the course Metrology is to understand structure of metrological system, hierarchy of international organizations, EU classifications, linkage of Slovenian metrological system with international system. The student acquire knowledge regarding basic and other SI units, understand definitions, realizations and dissimenation of units, traceability to higher hierarchical levels. The course contain basic presentation of measurement results (uncertainty, correction, …). The student research and analyses typical uncertainty sources in electrical and non-electrical measurements and acquired knowledge about basic statistical probability distribution used in measurement science for analysis of measurement results and uncertainty. In the scope of the course, student acquired knowledge about technologies and instrumentation, as well as understanding and correctly solving measurement problems.

Teaching and learning methods

In scope of the lectures the theoretical background on particular subjects related to metrology together with presentation of simple practical examples is given. A complete study material is available to the students.

Practical work is being performed in the laboratory environment, and is accomplished in steps acquainting students with the problem and instrumentation. Project group is consisted of two or three students who accomplish the calibration of electrical and non-electrical quantities. At the end of semester, students report on their results.

Expected study results

After successful completion of the course, students should be able to:

Identify basic problems regarding metrology within technical quality

Understand how modern metrology system has been made (scientific metrology, legal metrology, industrial metrology international organization)

Establish metrological support for industrial production and service

Calibrate and calculate uncertainty components of electrical and nonelectrical quantities (voltage, mass, pressure, temperature, …)

Basic sources and literature

1. DRNOVŠEK, Janko, BOJKOVSKI, Jovan, GERŠAK, Gregor, PUŠNIK, Igor, HUDOKLIN, Domen, GERŠAK, Gregor, Metrologija, ; Fakulteta za elektrotehniko 2012

2. BIPM: "The International System of Units (SI)", 8 izdaja, 2006

3. BIPM Evaluation of measurement data — Guide to the expression of uncertainty in measurement, JCGM 100:2008

4. BIPM, International vocabulary of metrology – Basic and general concepts and associated terms (VIM), JCGM 200:2012

5. Morris, A.S.: Measurement and Instrumentation: Theory and Application, ELSEVIER, 2011