Mechanical Metrology Division (Dimec) occupies the largest constructed
area at the campus, with 5,512 square meters. It maintains a laboratory
and support infrastructure with an adequate capability, with an
anti-vibration suspensio isolated room, with electromagnetic protection,
endowed with controlled air conditioning of its physical installations
capable of responding to the demands of international rules. It
is composed of the following reference metrological laboratories:
fluids laboratory force and hardness laboratory; mass laboratory;
dimensional metrology laboratory; and pressure laboratory.
The Dimec laboratories concentrate and give priority to its role
of carrying out its functions as Inmetro´s metrological laboratory,
whose duty is the custody of the national standards. The participation
in interlaboratory comparison programs promote the maintenance of
the SI units, as well as disseminate them to accredited laboratories.
The Division only carries out tests or calibrations of metrological
standards belonging to industrial laboratories, or from other sectors,
under exceptional circumstances, such as when the Accredited Laboratories
Network is unable to perform the service required. The Division´s
laboratories are committed to always keep the highest levels of
accuracy and the lowest experimental uncertainties that can be achieved
in the measuring process.
The Dimec offer services of calibration of specific instruments,
mass standards and instruments for measuring mass, mass density,
volume, surface tension, length, plain angle, force, torque and
pressure, all of which demanded by laboratories accredited by Inmetro
composing the Brazilian Calibration Network (RBC) and the Brazilian
Network of Test Laboratories (RBLE), and also by laboratories linked
to the Brazilian Network of Legal Metrology and Quality (RBMLQ).
Development of metrological programs
of comparison of standards; projects and qualification of measuring
instruments; to development of calibration techniques and procedures;
elaboration of technical regulations; installation of quality systems
In the area of development, Dimec, in partnership with
metrological institutions from both Brazil and abroad, coordinates
the following basic projects in the field of metrology: Structuring
of the nationwide traceability of hardness scales; dimensional metrology:
creation of Plain Angle metrology; creation of the primary standardization
of the pascal (1mPa to 1000 kPa); creation of viscosity metrology
; creation of the API (American Petroleum Institute) screw thread
gauge metrology; improvement of metrological reliability of density
meters and gravimetric standardization.
In the domain of mechanical metrology, Dimec is responsible for
the custody and maintenance of the national metrological standards,
which are systematically traced and compared to the international
standards though Key Comparisons under the supervision of the Bureau
International des Poids et Mesures, and to the metrological laboratory
standards of other countries, namely the National Institute of Standards
and Technology (NIST-USA) and the Physikalisch-Technische Bundesanstalt
(PTB), of Germany.