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Romania, INM (National Institute of Metrology)
Complete CMCs in Acoustics, Ultrasound, Vibration for Romania (.PDF file)
Pressure sensitivity level. Measurement microphone type LS2P. Measurand unit, dB (reference: 1 V/Pa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.06
IEC 61094-2:1992
Frequency: 31.5 Hz to 63 Hz
Approved on 15 January 2009
Internal NMI service identifier: INM/7.15.03
 
Pressure sensitivity level. Measurement microphone type LS2P. Measurand unit, dB (reference: 1 V/Pa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.05
IEC 61094-2:1992
Frequency: 125 Hz to 12.5 kHz
Approved on 15 January 2009
Internal NMI service identifier: INM/7.15.03
 
Pressure sensitivity level. Measurement microphone type LS2P. Measurand unit, dB (reference: 1 V/Pa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.09
IEC 61094-2:1992
Frequency: 16 kHz
Approved on 15 January 2009
Internal NMI service identifier: INM/7.15.03
 
Pressure sensitivity level. Measurement microphone type LS2P. Measurand unit, dB (reference: 1 V/Pa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.13
IEC 61094-2:1992
Frequency: 20 kHz
Approved on 15 January 2009
Internal NMI service identifier: INM/7.15.03
 
System response level. Artificial ear system. Measurand unit, dB (reference: true sound pressure level)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.3
Sequential comparison
Frequency: 125 Hz to 8 kHz
Approved on 15 January 2009
Internal NMI service identifier: INM/7.24.1
 
Sound pressure level. Sound calibrator, single frequency 1 kHz, 94 dB (reference: 20 µPa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.15
Calibrated measurement microphone
Microphone type: LS2P
Approved on 15 January 2009
Internal NMI service identifier: INM/7.15.01.1
 
Sound pressure level. Pistonphone, single frequency 250 Hz, 124 dB (reference: 20 µPa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.1
Calibrated measurement microphone
Microphone type: LS2P
Approved on 15 January 2009
Internal NMI service identifier: INM/7.15.01.2
 
Sound pressure response level. Sound level meter. Measurand unit, dB (reference: 20 µPa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.25
IEC 61672-1, IEC 61672-2
Frequency: 1 kHz
Approved on 15 January 2009
Internal NMI service identifier: INM/7.15.04
 
DC voltage sources: low values. Multifunction calibrator, DC voltage source, 1E-04 V to 10 V
Absolute expanded uncertainty (k = 2, level of confidence 95%) in µV: 1.0 to 40
Substitution method
Approved on 06 August 2013
Internal NMI service identifier: INM/3
Uncertainty table
 
DC voltage sources: intermediate values. Multifunction calibrator, DC voltage source, 10 V to 1000 V
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in mV: 0.09 to 8
Substitution method
Approved on 06 August 2013
Internal NMI service identifier: INM/6
Uncertainty table
 
DC voltage meters: low values. Multimeter, 0.1 mV to 1 mV
Absolute expanded uncertainty (k = 2, level of confidence 95%) in µV: 1.0
Direct measurement method
Approved on 06 August 2013
Internal NMI service identifier: INM/8
Uncertainty table
 
DC voltage meters: intermediate values. Multimeter, 0.001 V to 1000 V
Absolute expanded uncertainty (k = 2, level of confidence 95%) in µV: 1.0 to 8000
Direct measurement method
Approved on 06 August 2013
Internal NMI service identifier: INM/9
Uncertainty table
 
DC current sources: low values. Multifunction calibrator, current generator, 0 mA to 0.1 mA
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nA: 2.5
Indirect measurement method
Approved on 06 August 2013
Internal NMI service identifier: INM/31
Uncertainty table
 
DC current sources: intermediate values. Multifunction calibrator, current generator, 0.0001 A to 10 A
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in mA: 2.5E-06 to 1.2
Indirect measurement method
Approved on 06 August 2013
Internal NMI service identifier: INM/32
Uncertainty table
 
DC current meters: low values. Multimeter, 0.1 mA
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in nA: 10
Direct measurement method
Approved on 06 August 2013
Internal NMI service identifier: INM/36
Uncertainty table
 
DC current meters: intermediate values. Multimeter, 0.0001 A to 10 A
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in mA: 1.0E-05 to 5
Direct measurement method
Approved on 06 August 2013
Internal NMI service identifier: INM/37
Uncertainty table
 
AC voltage ratio up to 1100 V: real component. Inductive voltage divider, 1E-07 to 1.0
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 4E-07 to 4E-06
Comparison with reference divider
Frequency: 50 Hz to 5 kHz
Approved on 06 August 2013
Internal NMI service identifier: INM/87
Uncertainty table
 
AC voltage ratio up to 1100 V: imaginary component. Inductive voltage divider, 1E-07 to 1.0
Absolute expanded uncertainty (k = 2, level of confidence 95 %): 6E-07 to 6E-06
Comparison with reference divider
Frequency: 50 Hz to 5 kHz
Approved on 06 August 2013
Internal NMI service identifier: INM/88
Uncertainty table
 
AC voltage ratio up to 1100 V: real component. Measuring amplifier for strain - gauge measurements, 0 mV/V to 500 mV/V
Absolute expanded uncertainty (k = 2, level of confidence 95%) in µV/V: 1.0 to 10
Comparison with reference divider
Frequency: 200 Hz to 5 kHz
Maximum voltage: 10 V
Approved on 06 August 2013
Internal NMI service identifier: INM/89
Uncertainty table
 
AC voltage ratio up to 1100 V: real component. Synchro-resolver bridge, 0 rad to 2 rad
Absolute expanded uncertainty (k = 2, level of confidence 95%) in µrad: 3
Comparison with reference inductive voltage divider
Frequency: 400 Hz
Maximum voltage: 150 V
Approved on 06 August 2013
Internal NMI service identifier: INM/93