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The development of R&D activities
in metrology and participation in programs of laboratorial comparison
are other activities performed by the Division.
The Division maintains a well equipped
laboratory with an area of 600 square meters , an anti-vibration
suspension isolated room and free of mechanical and electromagnetic
interference, endowed with climatization
and physical installations in line with what is demanded by the
international rules.
The Division maintains a Quality System
that is kept updated. The Division comprises the following reference
metrological
laboratories:
Pyrometric Laboratory; Thermometric
laboratory; hygrometric laboratory; cryogenic laboratory (an upcoming
project) and Characterization laboratory of Thermo physics proprieties
(a future project).
Philosophy
of Performance
IIn line with their decentralization and strengthening of laboratorial
networks of metrological services carried out around the country,
the Division´s laboratories concentrate and give priority
to its role in the performance of its functions at Inmetro´s
metrological laboratories, whose major task is to take care of the
Brazilian metrological standards; take part in programs of laboratorial
comparisons and to promote the maintenance of the SI units, as well
as its dissemination among accredited laboratories. In line with
the purposes of a National Metrology Laboratory the Division seeks
to practice the highest levels of accuracy and the lowest uncertainties
associated with the measuring process.
Main Services
Offered
The Thermal Division offers calibration
of specific instruments and of standards of temperature and humidity
demanded by the laboratories accredited by Inmetro in the Brazilian
Network of Calibration and the Brazilian Network of Test Laboratories,
as well as by laboratories linked to the Brazilian Network of Legal
Metrology and quality, industries, universities and research centers.
Among the innumerous measuring ranges, types of instruments and
associated
uncertainties Platinum Resistance thermometers and Thermocouple
Thermometers are calibrated by the following standard procedures
and fixed points; liquid in glass lthermometers, resistance thermometers,
pyrometers of visible radiation and infra-red and pyrometric lamps
are calibrated by comparison.
Other Services Offered
Development of metrological programs of comparison of
standards, project and qualification of measuring
instruments, development of techniques and procedures of tests and
calibration; elaboration of technical regulations; installation
of quality systems; training in thermal metrology etc.
Reference
Standards
In the domain of Thermal Metrology, the Division is
responsible for the custody and maintenance of Brazil´s 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 standards of metrological laboratories of other nations´
Metrological Institutes. For maintaining fixed point cells always
compared to those of other nations´ laboratories with tradition
in metrology, the Division promotes the realization of the International
Temperature Scale (ITS 90)
Scale, following international criteria. Among the available standards,
we could name the 25 W and 2,5 W platinum resistance thermometers,
the platinum/platinum-rhodium Thermocouple Thermometers, the photoelectric
pyrometer and highly stable tungsten lamps.
Main Projects
under development
In partnership with metrological institutions from both
Brazil and abroad, the Division coordinates the following basic
projects in the field of metrology: construction and calibration
of Thermocouples up to 1500ºC - the PADCT III project.
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In support to the performance of its institutional mission, it is
up to the Thermal Metrology Division to realize
