International Standards and Conformity Assessment for all electrical, electronic and related technologies


Laboratory, optical and precision equipment (excl. glasses)

Measuring instruments allow accuracy of measurement – water meters, gas meters, electricity meters, etc. - and play an increasingly more significant role in today's society, by raising the industry and consumers' awareness on their actual consumption and making them more environmentally responsible. In the field of measurement, CEN develops standardization deliverables for heat, gas, and water meters, whereas the electricity sector is covered by CENELEC. These activities partially support the Directive 2014/32/EU on Measuring Instruments (MID) on the one hand and on the other hand, the EU policies on smart meters and smart grids.


CEN and CENELEC also undertake the standardization activities related to laboratory equipment. To a great extent, the work is carried out in cooperation with the corresponding international standardization bodies of ISO and IEC respectively.


Technical bodies:

  • CLC/TC 66x Safety of measuring, control, and laboratory equipment
  • CLC/BTTF 128-2 Erection and operation of electrical test equipment
  • CEN/CLC/JTC NAWI Non automatic weighing instruments

European legislation and mandates:

EU directive:
Measuring Instruments Directive (MID) Recast – 2014/32/EU
Directive 2014/31/EU  on Non-automatic weighing instruments (NAWI)

M/541-Standardization request addressed to CEN and CENELEC, regards certain measuring instruments

Websites links
European Commission
The European Association of National Metrology Institutes (EURAMET)
The International Organization of Legal Metrology (OIML)
European Cooperation in Legal Metrology (WELMEC)

Contact person: Joanna FRANKOWSKA