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CMCs General Physics (96)
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Impedance up to the MHz range (8)
Mass, mass standards (7)
Frequency (7)
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Sound in air (4)
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EURAMET (96)
Ireland (96)
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Ireland, NSAI NML (NSAI National Metrology Laboratory)
Complete CMCs in Mass and related quantities for Ireland (.PDF file)
Mass. Mass standards, 1 mg to 100 mg
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in µg: 1.5 to 3
Comparison in air
Uncertainty scales with measurand level
The volume of the mass standards is known
 
Mass. Mass standards, 0.1 g to 1 g
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in µg: 3 to 8
Comparison in air
Uncertainty scales with measurand level
The volume of the mass standards is known
 
Mass. Mass standards, 1 g to 10 g
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in µg: 8
Comparison in air
Uncertainty scales with measurand level
The volume of the mass standards is known
 
Mass. Mass standards, 10 g to 100 g
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in µg: 8 to 16
Comparison in air
Uncertainty scales with measurand level
The volume of the mass standards is known
 
Mass. Mass standards, 0.1 kg to 1 kg
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in µg: 16 to 150
Comparison in air
Uncertainty scales with measurand level
The volume of the mass standards is known
 
Mass. Mass standards, 1 kg to 10 kg
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in mg: 0.15 to 3.4
Comparison in air
Uncertainty scales with measurand level
The volume of the mass standards is known
 
Mass. Mass standards, 10 kg to 20 kg
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in mg: 3.4 to 6.8
Comparison in air
Uncertainty scales with measurand level
The volume of the mass standards is known
 
Frequency. General frequency source, 10 Hz to 99 Hz
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in µHz: 18 to 6
Frequency counter
Averaging time: 1000 s
Approved on 02 May 2006
Internal NMI service identifier: NSAI NML/4
 
Frequency. General frequency source, 100 Hz to 999 Hz
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in µHz: 6 to 2
Frequency counter
Averaging time: 1000 s
Approved on 02 May 2006
Internal NMI service identifier: NSAI NML/5
 
Frequency. General frequency source, 1000 Hz to 9999 Hz
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in µHz: 2 to 1
Frequency counter
Averaging time: 1000 s
Approved on 02 May 2006
Internal NMI service identifier: NSAI NML/6
 
Frequency. Local frequency standard, 10 MHz
Relative expanded uncertainty (k = 2, level of confidence 95 %) in Hz/Hz: 5E-13
Phase difference measurement
Averaging time: 1 day
Comparison made with NPL standard using CV method
Approved on 02 May 2006
Internal NMI service identifier: NSAI NML/1
 
Frequency. Local frequency standard, 5 MHz
Relative expanded uncertainty (k = 2, level of confidence 95 %) in Hz/Hz: 5E-13
Phase difference measurement
Averaging time: 1 day
Comparison made with NPL standard using CV method
Approved on 02 May 2006
Internal NMI service identifier: NSAI NML/2
 
Frequency. General frequency source, 1 MHz
Relative expanded uncertainty (k = 2, level of confidence 95 %) in Hz/Hz: 1E-11
Frequency counter
Averaging time: 1 day
Approved on 02 May 2006
Internal NMI service identifier: NSAI NML/3
 
Frequency. General frequency source, 0.01 MHz to 1000 MHz
Relative expanded uncertainty (k = 2, level of confidence 95 %) in Hz/Hz: 1E-10 to 3E-11
Frequency counter
Averaging time: 1000 s
Approved on 02 May 2006
Internal NMI service identifier: NSAI NML/7
 
Sound pressure level. Sound calibrator, single frequency, 1 kHz, 84 dB (reference: 20 µPa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.26
Calibrated measurement microphone
Microphone type: WS2P (IEC 61094-4)
Approved on 31 March 2011
Internal NMI service identifier: NMLI_A001
 
Sound pressure level. Sound calibrator, single frequency, 1 kHz, 94 dB (reference: 20 µPa) to 114 dB (reference: 20 µPa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.13
Calibrated measurement microphone
Microphone type: WS2P (IEC 61094-4)
Approved on 31 March 2011
Internal NMI service identifier: NMLI_A002
 
Sound pressure level. Pistonphone, single frequency, 250 Hz, 124 dB (reference: 20 µPa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.12
Calibrated measurement microphone
Microphone type: WS2P (IEC 61094-4)
Approved on 31 March 2011
Internal NMI service identifier: NMLI_A003
 
Sound pressure response level. Sound level meter, 94 dB (reference: 20 µPa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.30
IEC 61672-1, IEC 60651
Frequency: 125 Hz and 1 kHz
Approved on 31 March 2011
Internal NMI service identifier: NMLI_A004
 
CMM artifacts. 1-D artifacts,
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in µm: (2.3 + 0.003L), L in mm
Zeiss UMC850 CMM
Maximum length L: 1200 mm
Internal NMI service identifier: NSAI NML/4
 
CMM artifacts. 3-D artifacts,
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in µm: (2.8 + 0.004L), L length in mm
Zeiss UMC850 CMM
Maximum volume: (600x800x1200) mm3
Internal NMI service identifier: NSAI NML/5