Legal metrology in Denmark, i.e., measuring units, measuring methods, and measuring instruments is regulated by the Ministry of Economic and Business Affairs.

Legal metrology covers among others trade with measuring instruments, trade with liquids other than water (oil, petrol, milk etc.), and settlement of accounts for consumption of water, heat, and gas.

The Danish Safety Technology Authority (SIK) within the Ministry of Economic and Business Affairs has metrology as its field of responsibility. The Danish Safety Technology Authority has attached the Danish Accreditation and Metrology Fund (DANAK) as the executive part on metrology.

Danish Metrology (Dansk Metrologi) as the legal metrology part of DANAK administers the legislation concerning meters. Danish Metrology draws up the executive orders which regulate trading with measuring instruments, trading with goods, and settling of accounts on consumption.

Trading with measuring instruments is subject to The Danish Safety Technology Authority’s executive order no. 436 of 16th May 2006 concerning the implementation of the European Directive on measuring instruments (MID) and the appointment of notified bodies (Retsinformation). This executive order implements the requirements of the European Directive on meters for among others water, heat, gas, and liquids other than water.

According to the directive, manufacturers of measuring instruments, which are intended for legal use (settling of accounts), must be approved by a notified body before the meters are placed on the market. Generally a type examination of the meter is required, the examination being performed according to an approved document, but also the production process has to be approved. The approval of the production process may either be obtained in the form of a certified quality assurance system or an independent final inspection and testing of the instrument.

Type testing will ordinarily be performed according to a harmonized standard or a notified OIML document. When the meter fulfills the requirements the notified body may issue an EC-type Examination Certificate.

When the meter fulfills the requirements the manufacturer may apply the CE marking on the meter and the supplementary metrology marking (M plus year of affixing). The two markings give the consumer the certainty that the meter meets the specific requirements in the Directive. Moreover the manufacturer must issue a Declaration of Conformity which shall accompany the meter.

Settling of accounts and trading with liquids other than water are regulated by executive orders on metrological control of the measuring instrument which is used for settling the account or trading with liquids other than water. These executive orders describe the field of application and draws up the requirements which the supplier of the meters, the utilities, the repairmen, and the consumer have to fulfill. Moreover Danish Metrology has prepared guidelines (Metrological Directives) to the executive orders.