What & How

NoBoMet is a platform of European bodies that are designated by their national authority to perform legal metrology tasks. With the mutual acceptance within Europe of these tasks, the bodies are notified by there national authorities at the European Commission in Brussels.

What is Legal metrology?
 Legal metrology comprises all activities for which national legal requirements are prescribed on measuring instruments and methods of measurement. These activities are in Europe performed by designated and notified bodies on behalf of governmental authorities, in order to ensure an appropriate level of credibility of measurement results within Europe. The requirements and method of measuring are for number of measuring instruments harmonised by European directives.

What is Notification?
 Notification is an act whereby a Member State informs the Commission and the other Member States that a body, which fulfills the relevant requirements, has been designated to carry out conformity assessment according to a directive. A list of notified bodies, including the designated tasks, is available on the Nando website of the European Commission.

How is Conformity Assessment performed?
 Conformity assessment is any activity to determine that a process, product, or service meets relevant technical standards and fulfills relevant requirements. Conformity assessment activities may include testing, inspection, auditing and certification.

What directives are applicable?
 At present two European directives are in force for measuring instruments; DIRECTIVE 2009/23/EC of the European Parliament and of the Council of 23 April 2009 on Non-Automatic Weighing Instruments and DIRECTIVE 2004/22/EC of the European Parliament and of the Council of 31 March 2004 on Measuring Instruments. The latter covers water meters, gas meters and volume conversion devices, active electrical energy meters, heat meters, measuring systems for continuous and dynamic measurement of quantities of liquids other then water, automatic weighing instruments, taximeters, material measures, dimensional measuring instruments and exhaust gas analysers. In general the directives are called the NAWI and MID directives.

How is European metrology coordinated?
 To establish harmonized and consistent approaches on the conformity assessment in legal metrology, the European cooperation of national authorities "WELMEC" provide guidance to the notified bodies and inspection bodies. In some cases notfied bodies participate in WELMEC meetings or technical committees as being the national authority. In other cases the notified body participate on behalf of the national authority, or do not participate at all.

How is legal metrology organized World Wide?
 The International Organization of Legal Metrology (OIML) is an intergovernmental treaty organization whose membership includes Member States, countries which participate actively in technical activities, and Corresponding Members, countries which join the OIML as observers. On voluntary basis notified bodies can be authorized as Issuing Authority for Type Examination of measuring instruments within the OIML certification system.OIML certificates of conformity may be accepted by national authorities to establish national approval.