Legal Metrology

  Part of metrology relating to activities which result from statutory requirements and concern measurment, units of measurement, measuring instruments and methods of measurement and which are performed by competent bodies. The scope of leagal metrology may be different from country to country.

The Scopes of Legal Metrology in Republic of Armenia

    The measurements in our daily lives has become so common that we do not even notice them. For example:

• we monitor the speed, when driving a car

• we pass a medical examination,

• we keep track of time, for being accurate,

• we define the quantity, when buying products

• we monitor the volume, of the fuel filled in our machine.

   Usually there is no ideal measurement result. It always has uncertainty which is cause by various reasons. For example the instrument error, the environmental conditions, operator, ete. However, deviation from the permissible error of the measurement results can lead to serious problems. For example: in healthcare when determining the permissible dose of radiation in cancer treatment,  deviation from the norm can either cause serious damage to health of the patient or at best don't have an effect. In order to protect society from negative consequences of veriable results of the measurement States have developed the necessary regulatory legal system. Practically all States supply such protection by introducing of metrology in to the legal structure of the State, where the "legal metrology"comes from. The  requirements of legal metrology apply to the measuring instruments used in trade, health care, safety, environmental protection, military industry, as well as in judicial processes.

Legal metrology in trade

Major trade deals are concluded on the basis of measurements and the bias in their results may cause distrust between the parties concluding an agreement. In order to protect the public the measuring instruments used in trade transactions are subject to metrological control, that is type approval, verification and metrological expertise. Trade plays an important role in economic development in the welfare of the population and in maintaining financial stability. Examples of some instruments used for the conclusion of commercial transactions are the following devices for length measurements, mass measurements (all types of scales and weighing instruments), volume measurements (measuring tank) and so on. Legal metrology organizes and controls the compliance of measuring instruments used in trade with international requirements which promotes the removing of technical barriers to trade. In the Republic of Armenia the metrological bases required for the above-mentioned actions provides the National Institute of Metrology with its subdivisions in accordance with RA Law "On Ensuring the Uniformity of Measurements" of 0802.2012.

Legal metrology in medicine

          Medicine is a constantly developing area. In recent decades, a number of new and sophisticated technologies are used in the medical field and most of these technologies and equipments directly or indirectly perform measurements. Measurements in medicine are carried out to determine the physical characteristics of animals and humans as well as, to determine body temperature, blood pressure or blood sugar. Therefore, to provide accurate data and the correct choice of the treatment methods in medicine metrological characteristics of the equipments must be controlled and ensured. In the territory of the Republic of Armenia necessary metrological basis for the above mentioned operations is provided by the National Institute of Metrology through its divisions in accordance with RA law ''Օn Ensuring the Uniformity of Measurements''.

Legal metrology and safety

Little attention has been paid to safety, whether at home, at work or when travelling. So, in order to guarantee the safety of population when drinking water  from a tap, working with electrical appliances, driving a car, safety laws and regulations have been drawn up and adopted. These laws and regulations (normative documents) define preventive actions which require accurate measurement results.

Accurate measurements are essential, for example

·         when determining tolerance levels of harmful substances in food,

·         when determining the amount of electromagnetic radiation emitted by electrical appliances,

·         when determining the level of air pollution by vehicle exhaust emissions,

·         when determining the radioactivity background of  equipments in diagnostic center rooms,

·         when determining the noise level at workplace.

For these tasks accurate measuring instruments are needed, the metrological characteristics of which are kept according to national and international requirements. Thus, in order to perform the mentioned tasks and other assignements, measuring instruments should be traceable to the international level. The National Institute of Metrology of RA ensures it through its subdivisions according to RA Law “on Ensuring the Uniformity of Measurements”.

Legal metrology in military service

  In the recent two decades new military fighting methods particularly high-precision weapons have been invented, that together with the modern information technologies are considered to be the basis for management, reconnaissance and targeting systems, which change the types and methods of warfare essentially. In other words, the power of weapon systems of countries is characterized not by their quantity but quality. The qualitative characteristics of the above-mentioned weapons and systems to a greater extent depend on the metrological characteristics, which are ensured by military metrology. Military Metrology is one of the areas of metrology, which ensures the uniformity of measurements in the field of military science. On the territory of the Republic of Armenia the department of Standardization and Metrology of the General Staff of the Military Forces of the Republic of Armenia in cooperation with the National Institute of Metrology provide the necessary metrological basis for the above mentioned activities.

   The measuring instruments used in the above mentioned fields and which are regulated by the RA law "on Ensuring the Uniformity of Measurements", and all the instruments defined in the list .... are subject to type approval and verification.