Different types of weighing instruments adapted to specific applications, are widely used in industry and trade. The Directive 90/384 EEC of the Council on non-automatic weighing instruments defines essential requirements for the performance of weighing instruments rather than giving technical solutions. As type approval procedures will have to ensure that instruments conform to the Directive, CEN/CENELEC will be given a mandate from the Commission to produce a harmonised European standard based on the OIML Recommendation R 76. However, experience with the OIML recommendations has shown that problems exist in their application in a uniform manner leading to disputes over the type approvals granted by the different type approval authorities.
The aim of the project is to compare the results of type approval procedures carried out in the Member States and EFTA States and thereby quantify and understand the problems involved. To this end three different types of instruments will be circulated to the National Metrology Institutes.