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Institutul National de Metrologie
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LENGTHS LABORATORY

INM LABORATORIES

General InformationThe Management Team
Organizational Chart

 

 

  • DIMENSIONAL AND AUV MEASUREMENTS LABORATORY   


Object of activity: metrology of length, plane angle, area and deviations of shape and position.

National measurement standards: national length measurement standard, national plane angle measurement standard.

General goals:

  • Research for development of the national and reference measurement standards and for providing traceability to SI units.
  • Works for dissemination of the units of measurement to the measurement standards of regional BRML laboratories and other laboratories in all fields of activity.

Comparisons:



Calibration fields

Lengths:

  • End measures: parallel-precision measurement standard blocks; measurement standards;
  • Reference point measures: measuring rulers; tape line measures;
  • Lasers with = 633 nm: laser interferometers;
  • Area: planimeters; area measurement machines.

Angles:

  • End measures: angle blocks; measurement standard polygons;
  • Reference point measures: graduated circles and sectors;
  • Lasers and scopes for surveying and alignment;
  • Shape deviations and surface condition: straightness; flatness; roughness.

For the full list of calibrations and charges, see the List of measuring means for which the Romanian Bureau Legal Metrology performs calibrations, LE 2016.

The LENGTH laboratory consists of two groups: LENGHTS group and ANGLES group.

The table of measuring capabilities of the LENGTH laboratory in Microsoft Word (.DOC) or Adobe Acrobat (.PDF) format.

Personnel, positions and contact details:

PhD Eng. Alexandru DUTA, head of laboratory,, tel. (004021) 334.48.30 ext. 144, e-mail: duta@inm.ro
PhD Eng. Elena DUGHEANU,responsible for LENGTHS group, tel. (004021) 334.48.30 ext. 163, e-mail: dugheanu@inm.ro
Ing. Dragos Teodorescu, tel. (004021) 334.48.30 ext. 197
Ing. Valentin Mihalcea, tel. (004021) 334.48.30 ext. 186
Sing. Daniel FRATILA, tel. (004021) 334.48.30 ext. 197
Sing. Lucian GROZEA, tel. (004021) 334.48.30 ext. 186
Tehn. Florin MATEI, tel. (004021) 334.48.30 ext. 154
Tehn. Stela FRATILA, tel. (004021) 334.48.30 ext. 154
Tehn. Mihaela MIHAIESCU, tel. (004021) 334.48.30 ext. 186

 

 

ACOUSTICS GROUP

Aims and tasks

Maintenance, operation and improvement of the national standard for the sound pressure level and the reference standard in its field of activity represent the role of the laboratory.

The national standard of sound pressure level consists of a group of laboratory standard microphones and a group of standard sound calibrators, with auxiliary installations.

Microphones calibration is performed using a primary method for pressure calibration of laboratory standard microphones by the reciprocity technique in the closed couplers, according with IEC 61094-2.

The projects for the development of the national measurement standard allowed us to expand from calibration on a single frequency to calibration on the entire frequency range of the microphone.

Currently we use a high-performance installation to measurement standard the microphones using the reciprocity method.

As a reference measurement standard in audiometry we use an artificial ear with an extended frequency range, which will enable participation in international comparisons.

Metrological services offered
Calibration from the following types of measuring means:

  • condenser microphones
  • sound calibrators
  • artificial ears
  • sound level meters
  • frequency analyzers
  • acoustic rooms (micro-anechoic chambers, etc.)

Verifications and pattern evaluations for the following types of measuring means:

  • sound level meters
  • condenser microphones
  • octave(1/1) and third-octave (1/3) band filters intended for the analysis of sound and vibrations
  • audiometers
  • sound exposure meters

For the full list of calibrations and charges, see the List of measuring means for which the Romanian Bureau Legal Metrology performs calibrations, LE 2016.

Table of calibration capabilities of the ACOUSTICS - KINEMATICAL QUANTITIES laboratory in Microsoft Word (.DOC) or Adobe Acrobat (.PDF) format.

Personnel, positions and contact details:

PhD Phis. Laura TUGULAN, tel. (004021) 334.48.30 ext. 122,126, e-mail: laura.tugulan@inm.ro
Phis. Florentina DINCA, tel. (004021) 334.48.30 ext. 122,126, e-mail: florentina.dinca@inm.ro

 

VIBRATIONS AND KINEMATICAL QUANTITIES GROUP

Reference standard for mechanical vibrations
It is represented by a calibration system for piezoelectric acceleration transducers, made by Bruel & Kjaer, consisting of a measurement standard piezoelectric acceleration transducer and a precision conditioning amplifier, measurement standard together at DPLA, using the interferometric method (absolute method).


Reference standard for rotations
It consists of a measurement standard installation for rotations, made by Jaquet, equipped with a precision tachometer designed and built by the Kinematical group members.


Reference standard for linear speed
It consists of an installation designed and built by the Kinematical group members, used mainly when measuring the moving speed of cars and the metrological verifications of kinemometers for traffic control.


Metrological services

Calibration for the following main types of measuring means:

  • electronic, electrical, mechanical tachometers
  • electronic and mechanical vibrometers
  • piezoelectric acceleration transducers

Verifications for the following main types of measuring devices:

  • traffic control kinemometers
  • taximeters
  • chronotachographs
  • speed-measuring installations for train and subway engines

For the full list of calibrations and charges, see the List of measuring means for which the Romanian Bureau Legal Metrology performs calibrations, LE 2016.

Personnel, positions and contact details:

Sing. Ionel MAIOR, tel. (004021) 334.48.30 ext. 122,126

 

 

 

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