In-service verification of scales is required
Regular in-service verification of scales is required. The verification is carried out by an approved inspection body. The scales must be verified every three (3) years. As an exception, automatic line scales used to check quantity contained in the package must be verified every two (2) years.
A company using the measuring result to determine the price is responsible for ensuring that a suitable measuring instrument compliant with the requirements is used. The company is also responsible for ensuring that the use of the scales is monitored and that their reliability is verified regularly every three years. In addition, the scales must also be verified whenever there is a reason to suspect their reliability or their markings are damaged.
Verified scales have a verification mark as shown in Figure 4. The year and month of the last verification is indicated on the mark. The mark is shown on all measuring instruments after in-service verification.
Figure 4. In-service verification mark. In this example, the verification was performed in January 2017.
Figure 5. A Finnish seal mark.
Measuring Instruments Act 707/2011
Government Decree on Measuring Instruments 471/2014
Government Decree on Non-Automatic Scales 1431/2016
Government Decree on Essential Requirements, Demonstration of Compliance and Specific Technical Requirements of Measuring Instruments 1432/2016
Measuring Instruments Directive 2014/32/EU (MID)
Non-Automatic Weighing Instruments Directive 2014/31/EU (NAWID)
Council Directive 76/211/EEC on the approximation of the laws of the Member States relating to the making-up by weight or by volume of certain prepackaged products
Council Directive 75/107/EEC on the approximation of the laws of the Member States relating to bottles used as measuring containers
Council Directive 80/181/EEC on the approximation of the laws of the Member States relating to units of measurement
Directive 2009/34/EC relating to common provisions for both measuring instruments and methods of metrological control
Website of the European Commission on legal metrology and pre-packaged products
The European Commission’s list on the harmonised standards of the MID
NANDO database Database of the European Commission on notified bodies
OIML International Organization of Legal Metrology
WELMEC (The body for the promotion of European cooperation in legal metrology)