# Measurements

Higher education teachers: Agrež Dušan
Collaborators: Begeš Gaber, Beguš Samo, Geršak Gregor, Hudoklin Domen
Credits: 6
Semester: winter
Subject code: 64616

## Subject description

Prerequisits:

• Enrolment in the year of the course.

Content (Syllabus outline):

• Fundamental principles and methods of measurement;
• Measurement of electrical quantities (voltage, current, power, resistance, capacitance, inductance, frequency, phase, power factor, ...), and estimation of basic three parameters of the periodic quantities (frequency, amplitude, and phase angle);
• Analysis of errors in the acquisition of measurement signals with suitable signal conditioning (shunt, voltage divider, measurement transformer etc.);
• Reduction of the influence of disturbing signals and measurement bridges;
• Structure of measuring instruments and systems (structure and elements, static and dynamic characteristics, influence quantities, analog and digital conditioning and signal processing).
• 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 non-electrical quantities (temperature, humidity, preasure, force, lenght, noise, ...).

Objectives and competences:

• To get acquainted with the basic knowledge of measurements and principles and methods of measurement of the most important quantities in engineering and their parameters;
• To understand the concept of evaluation of the measurement result expressed with uncertainty and to study the meaning of statistic and analysis of measurement uncertainty;
• To study the fundamentals of metrology and metrological systems, Si units, traceability, etc.;
• To learn the methods of measurements of the basic electrical quantities and caracteristics of the measurement transducers;
• To introduce the basic principles of digitalization of the measurement signals in the time and frequency domain (sampling, A/D conversion techniques, etc.);
• To get acquainted with the basic measuring instrumentation (multi-meter, electronic oscilosscope, universal counter, etc.) and with the avtomatization of the measurement systems (instrument and computer);
• 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.