The European Centre for
Mathematics and Statistics in Metrology


RISE Research Institutes of Sweden include the national metrology institute.

The national metrology institute has responsibility for maintaining and developing the primary measurement standards of the SI (metre, kilogram, second, etc), and associated measurement methods and techniques. The Swedish National Metrology Programme is owned by VINNOVA, the Swedish Governmental Agency for Innovation Systems. RISE (formerly SP) is Past Chair of EURAMET (, the association of national metrology institutes in Europe. RISE SP also conducts research, testing and certification in a wide range of areas related to analytical chemistry and materials technology.

Uncertainty and decision-making
Measurement uncertainty can lead to certain risks of incorrect decisions when attempting to answer questions about the entity, such as are there significant differences between two sets of measurement results or is the test result inside or outside entity specifications. In the past decade or so, one has sought to go beyond the certain arbitrariness of percentage risk in traditional statistical significance testing, by establishing optimal cost/benefit, specifically the measurement uncertainty required to achieve the optimal balance between cost of measurement and cost of incorrect conclusions. Firstly developed in analytical chemistry, this 'fitness for purpose' approach is being successively applied to diverse fields of application such as in measurement and conformity assessment of the utilities (energy, water etc), vehicle chassis manufacture, environmental emissions and pre-packaged goods.

Power systems and mathematical modelling
Power systems are becoming increasingly dependent on measurements in order to both function efficiently and to ensure continuous safe operation. Measurements are increasingly a means to perform various analyses and are the key to a more ‘intelligent’ power system with innovative solutions and services. New technology and better communication has also resulted in a significant increase in the amount of measurements being available in the system. Power system metrology is however facing several challenges. Measurements are often made indirectly with mathematical models of the entity of interest, and methods to handle uncertainties are needed. Power systems are also large and complex, with real-time data continuously being gathered from a large amount of measuring devices in different parts of each system. Thus, new methods are required to handle such large-scale data and to ensure proper metrological treatment beyond the current capabilities.

Key personnel

Ragne Emardson

has degrees in Computer Science and Engineering and in Electrical Engineering. He has held positions at Ericsson Mobile Data Design, Saab Ericsson Space, NASA Jet Propulsion Laboratory California Institute of Technology and Chalmers University of Technology. He is currently project manager and deputy section manager at the SP Technical Research Institute of Sweden.

Contact directly: EmailRagne

Leslie Pendrill

has been the Head of Research of the Measurement Division at the SP Technical Research Institute of Sweden since 1985. His research work is concerned with fundamental metrology, in particular optoelectronic, laser, length, and mass measurements, while his applied metrology activities include optimised measurement uncertainty studies and the measurement of perception. He is actively involved in several international metrology activities, holding leading roles such as the 2009-2012 Chair of the European Association of National Metrology Institutes (EURAMET).

Contact directly: EmailLeslie

Key publications

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