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INM
Institutul National de Metrologie
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INM LABORATORIES

General InformationThe Management Team
Organizational Chart

 

 

  • ELECTROMAGNETICAL MEASUREMENTS LABORATORY   


Goals:

[image] [image]
  • development and maintenance of the national references - national and reference measurement standards of Romania - for the units of the following quantities: DC voltage, DC resistance, DC current, impedance (AC resistance, capacitance, inductance), AC voltage, AC current, AC power and energy, AC high voltage, AC voltage ratio, AC current ratio
  • dissemination of the units, at the required accuracy level, through calibration services, whose results are traceable to the SI.
  • development of measuring techniques and procedures, including uncertainty analysis methods, participation in international, regional and bilateral comparisons
  • consultancy and training on issues related to the measurement theory and practice
  • pattern evaluations and metrological verifications

 

The ELECTRICAL MEASUREMENTS LABORATORY includes the following groups:

 

 

The Electrical Measurements Laboratory maintains and uses six national standards as well as a large number of reference measurement standards.

 

 

DIRECT CURRENT GROUP

 

Services:

[image]a) calibration of:

  • direct current and voltage calibrators
  • digital multimeters
  • single-value standard resistors
  • resistance bridges
  • resistance boxes
  • standard cells
  • direct current potentiometers
  • resistive dividers
  • analogue instruments for the measurement of current, voltage and electrical power

b) metrological verification and pattern evaluation of:

  • megohmeters
  • earth testers

c) high-accuracy measurements and technical assistance

 

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:

Eng. Liliana CIRNEANU, head of laboratory, tel. (004021) 334.48.30 ext. 153, e-mail: liliana.cirneanu@inm.ro
Eng. Marciana SIMIONESCU, tel. (004021) 334.48.30 ext. 153, e-mail: marciana.simionescu@inm.ro
Tech. Beatrice RUSESCU, tel. (004021) 334.48.30 ext. 174
Tech. Viorica OANA, tel. (004021) 334.48.30 ext. 174

 

 

ALTERNATING CURRENT GROUP

 

Services:

[image]a) calibration of:

  • AC current and voltage calibrators
  • AC current and voltage calibrators
  • digital multimeters
  • multifunction calibrators
  • single-junction thermal converters Un = 1 V; 2 V
  • wattmeters and single - and three - phase standards for active power and energy
  • Varmeters and single - and three-phase standards for reactive power and energy
  • digital phasemeters and power factor meters
  • single- and three - phase testing equipment for electrical energy meters
  • equipment for the calibration of instrument transformers

 

b) metrological verification and pattern evaluation:

  • single- and three-phase meters for active electrical energy
  • single- and three-phase meters for reactive electrical energy

c) high-accuracy measurements and technical assistance

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d) other activities

  • initial or after-repair putting into service of single- and three-phase testing equipment for electrical energy meters
  • metrological evaluation of measuring chains in the automated control systems

 

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:

Eng. Dorin FLAMINZEANU, tel. (004021) 334.48.30, ext. 177, e-mail: doru.flamanzeanu@inm.ro
PhD Mihaela ISPAS, tel. (004021) 334.48.30, ext. 140, 177
Eng. Sorin NICULESCU, tel. (004021) 334.48.30, ext. 140

 

 

PARAMETRIC QUANTITIES GROUP

 

Services:

a) calibration of:

  • single-value and decade standard capacitors
  • single-value and decade standard inductors
  • high-voltage standard capacitors
  • RLC meters
  • inductive voltage dividers
  • capacitance and loss factor (tan d) bridges
  • current transformers and/or voltage transformers measuring instruments
  • power transformers measuring instruments
  • capacitive unbalance measurement instrument
  • measuring amplifiers for strain gauge measurements
  • synchro-resolver standards and angle position indicators

b) high-accuracy measurements and technical assistance

 

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

 

Personnel, positions and contact details:

PhD Eng. Anca NESTOR, tel. (004021) 334.48.30, ext. 170, e-mail: anca.nestor@inm.ro
Eng. Ionel URDEA MARCUS, (004021) 334.48.30, ext. 170, e-mail: ionel.urdea@inm.ro

 

 

HIGH VOLTAGE GROUP

 

Services:

a) calibration of:

  • kilovoltmeters
  • voltage transformers accuracy (0.1 to 0.5) %
  • current transformers accuracy (0.05 to 0.5) %

b) metrological verification and pattern evaluation:

  • current transformers
  • voltage transformers

c) high-accuracy measurements and technical assistance

 

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

 

Personnel, positions and contact details:

Eng. Florin MIREA, tel. (004021) 334.48.30, ext. 104, e-mail: florin.mirea@inm.ro
Tehn. Gabriel POP, tel. (004021) 334.48.30, ext. 104
Tehn. Cornel BALTATEANU, tel. (004021) 334.48.30, ext. 104

 

 

TIME AND FREQUENCIES GROUP

 

Services:

  • Development and maintenance of the national references national and reference standards of Romania for the units of measurement of the following physical quantities: time, frequency, attenuation, voltage, impedance and power at high-frequency, magnetic induction in air and magnetic flux.
  • Dissemination of the units of measurement, at the required accuracy level, through its calibration services, with results traceable to the SI.
  • Development of techniques and procedures of measurement, including methods for uncertainty analysis.
  • Participation to international, regional and bilateral comparisons.
  • Cooperation with other Romanian institutions and similar institutes from abroad.
  • Consultancy and training on issues related to the theory and practice of measurement.
  • Pattern evaluations and metrological verifications.

 

TIME GROUP

Aims and tasks
Time, one of the 7 fundamental quantities, is currently the most accurately measured quantity (10-14 ... 10-15). For this reason, time measurements, i.e. frequency, are used to increase the accuracy of other quantities.

The main role of the time and frequency laboratory is to hold and bring up-to-date the national measurement standard of time and frequency, to ensure traceability to the SI and disseminate the time and frequency units with the required accuracy, at national level.

Romania's national standard for time and frequency consists of an atomic frequency standard with cesium, type HP 5071A, and the auxiliary installations.


Projects for the development and maintenance of the national standard
Coordinated Universal Time is a combination of two time scales Universal Time (UT1) and International Atomic Time (TAI). UT1 is a dynamic time scale derived from observation of the Earth's rotation, monitoring by the International Earth Rotation Services (IERS). TAI is a time scale based on clock data collected and treated together through a combination of their readings in order to generate a worldwide scale. By definition, UTC has the same metrological properties as TAI. TAI and UTC are calculated and distributed by the Time Section of the International Bureau of Weights and Measures (BIPM).

INM's Time and Frequencies laboratory has been participating to UTC since October 2002, when it began to participate to CCTF-K2001.UTC. Due to the participation to this comparison, SI traceability of the national standard is ensured.

The dissemination of time and frequency units is realized through the calibration operations performed at the INM headquarters.


Metrological services
The TIME group of the laboratory performs the following calibrations:

INSTRUMENTS FOR MEASURING TIME
TIME INTERVAL, DURATION (s)
Clock
- atomic
- quartz
Marine chronometer
- mechanical
- electronic with quartz
Electronic chronometer
Portable chronometers
Programming clocks for electricity meters
- mechanical
- electronic with quartz
Devices for verifying and adjusting mechanical clocks
FREQUENCY (Hz)
Frequency generator
- stability 10 - 6 or better
- stability under 10 - 6
Frequency synthesizer
Electronic frequency meter
- stability 10 - 6 or better
- stability under 10 -6
Universal counter
- stability 10 - 6 or better
- stability under 10 -6
Electric frequency meter
Frequency converter
Pulse generator
Function generator


Outlook
Developing activities in order to improve the participation to the realization of TAI and for the dissemination of time information, at national level, through phone line and Internet (protocol NTP).


Personnel, positions and contact details:

Dipl.eng. Violeta CIOCIEA, tel. (004021) 334.48.30 ext. 125, e-mail: violeta.ciociea@inm.ro
Tehn.Vladut Paul Andrei, tel. (004021) 334.48.30 ext. 168,

 

 

HIGH-FREQUENCY AND MAGNETIC QUANTITIES Group

Field of activity

  • Calibrations and precision measurements for electric quantities in the frequency range 10 MHz...10GHz;
  • Calibrations and precision measurements for magnetic quantities;
  • Precision measurements for the evaluation of conformity for the issue of pattern approvals.

Measurement standards

  • National Measurement Standard of measurement unit (W) for power at high frequencies;
  • National Measurement Standard of measurement unit (dB) for attenuation at high frequencies;
  • Measurement Standard of voltage at high frequencies;
  • Impedance Measurement Standards at high frequencies;
  • National Measurement Standard of the inductance unit

Examples of services provided:

  • High frequency powermeter Calibration
    • frequency range 10 MHz10 GHz.
    • power range: 3 nW3 W
  • High frequency directional powermeter Calibration
    • frequency range 10 MHz. .1000 MHz.
    • power range: 0.1 W3 W
  • Calibration of High frequency: voltmeters, milivoltmeters and microvoltmeters;
    • frequency range 10 MHz1000 MHz.
    • voltage range 10 V3 V
  • Calibration of standard signal generators
    • frequency range 100 kHz12 GHz
    • output level 60 dBm+ 30 dBm
  • Calibration of attenuators for high frequencies
    • frequency range 10 MHz10 GHz
    • attenuation range 070 dB.
  • Calibration of DC instruments for measuring the magnetic field or magnetic induction in the air
    • magnetic induction range 100 T 2.5 T
  • Calibration of AC instruments for measuring the magnetic field or magnetic induction in the air
    • magnetic induction range 10 T 0.1 T
    • frequency: 50 Hz
  • Calibration of AC instruments for measuring the magnetic field or magnetic induction in the air
    • magnetic induction range: 10 T200 T
    • frequency range: 100 Hz10 kHz
  • Calibration of devices measuring magnetic flux
    • magnetic flux range: 1 mWb10 Wb
    • frequency range: 0 Hz10 kHz
  • Calibration of material samples for the Epstein installation with the 25 cm frame
    • magnetic induction range: 0.1T 2 T
    • magnetic field range: 10 A/m 10 kA/m
    • specific remagnetization loss range: 0.4 W/kg10 W/kg
    • frequency range: 25 Hz400 Hz
  • Calibration of soft or hard magnetic material samples for DC permeameters magnetic induction range: 0.1T2 T
    • magnetic field range:
    • soft magnetic materials: 10 A/m100 kA/m
    • hard magnetic materials: 100 kA/m1 MA

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

 

Personnel, positions and contact details:

Dipl.eng. Violeta CIOCIEA, tel. (004021) 334.48.30 ext. 125, e-mail: violeta.ciociea@inm.ro
Tehn.Vladut Paul Andrei, tel. (004021) 334.48.30 ext. 168,

 

 

 

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