Legal metrology protects public safety, the environment, consumers and traders and is fundamental to fair trade. It is very important to note that legal metrology affects not only the health sector, but also trade, the daily purchase of goods by weight, the purchase of fuel and the provision of public services in the residential area. Virtually all countries offer this protection by including metrology in their legislation, hence the term „legal metrology“. Companies must ensure that the results provided by their measuring instruments are correct when used in key activities such as controlling process variables, ensuring the quality or safety of their products, processes or services, or obtaining the data needed to analyze and make important decisions. Measurements play an important role in people`s daily lives, because in practice they are all the activities we perform. Every product is bought and sold using medical processes, whether it is coffee©, water or electricity, and this concerns our private economy. The radars (cinema counters) of the security forces with their economic and criminal consequences are also measured©. Hours of sunshine, sizes of clothes, alcohol content, weight of cards, temperature of premises, tire pressure, etc., it is practically impossible to describe an activity without referring to metrology. Field of metrology, which includes activities that define legal requirements for dimensions, units of measurement, measuring instruments and measurement methods, the results of which can have an impact on the transparency of commercial transactions, the health or safety of consumers and users and the environment. Those activities shall be carried out under the responsibility and supervision of the competent authorities in order to ensure, with an appropriate degree of credibility, their results under a Regulation, whether harmonised at European or national level. With regard to metrological verification requirements, in order to protect the public interest in measuring instruments, the Government, in particular the Ministry of Industry and Trade, must publish a set of standards defining the technical and administrative requirements for measuring instruments subject to legal metrology. Measuring instruments are subjected to various tests to ensure compliance with relevant technical and legal requirements. The testing of a measuring instrument is a conformity assessment procedure (with the exception of model evaluation) leading to the affixing of a test mark and/or the issue of a test certificate.
It is a series of administrative, visual and technical tests aimed at verifying and confirming that a measuring instrument complies with legal requirements through conformity assessment procedures (with the exception of model evaluation) which include tests and markings. and the issuance of a test certificate that verifies and confirms the measuring instrument. In Spain, there are three types of conformity assessment bodies in the field of legal metrology± notified bodies, measurement control bodies and approved metrological testing bodies. „For citizens, the concept of legal metrology, its effects and scope go unnoticed; occur when the activities they carry out in daily life are analysed in detail, as well as in the benefits they receive, which translates into the protection of their fundamental rights in terms of health, safety, the environment and their economic interests,“ he explained. Legal metrology is the part of metrology (science of measurements) that refers to activities resulting from legal requirements that apply to measurements, units of measurement, measuring instruments and measurement methods performed by competent bodies. Legal metrology is the part of metrology that is subject to legal/regulatory control. The State organizes the infrastructure of legal metrology, through which the following objectives are to be achieved ENAC acts specifically in this sector in two main areas: calibration and legal metrology, not to mention that in other sectors metrology plays a key role in the practical totality of activities. It is the responsibility of the legal metrological control to verify compliance with the applicable national legislation in metrology. This includes checking the correct quantity and content in prepackaged products; to verify compliance with national regulations. The following bodies are designated: Therefore, a correct measure has a fundamental importance for the economy, for businesses and for the general population, and not only helps in the organization of commercial transactions, but also allows the interchangeability of products and services at the global level. „Measurements and gauges have always been present in product exchange scenarios; The fundamental concern is that the measurements and their results are reliable,“ he said.
In order to achieve these objectives, it is necessary to have a technical basis for evidence and judicial proceedings by impartial, competent and relevant bodies. Legislation on measurement and measure is necessary in all these cases, as well as when it is necessary to protect both the buyer and the seller in commercial transactions, or when the measures are used to enforce sanctions. Executive power in metrological matters belongs to the Autonomous Communities. Below you will find the links to the different services responsible for metrology in the Autonomous Communities: we consume electricity, gas and water invoiced on the basis of the results of the measurements, we buy meat, fish, fruit and vegetables by weight, we refuel our cars in volume, we check our cars to check our exhaust emissions, And so on. Achieve an adequate level of consumer protection in terms of health, safety, the environment and economic interests.