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Switzerland, METAS (Federal Institute of Metrology)
Complete CMCs in Acoustics, Ultrasound, Vibration for Switzerland (.PDF file)
Pressure sensitivity level. Measurement microphone type LS1. Measurand unit, dB (reference: 1 V/Pa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.1 to 0.05
Reciprocity calibration IEC 61094-2:1992
Frequency: 31 Hz to 63 Hz
Approved on 18 October 2005
 
Pressure sensitivity level. Measurement microphone type LS1. Measurand unit, dB (reference: 1 V/Pa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.05
Reciprocity calibration IEC 61094-2:1992
Frequency: 125 Hz to 2 kHz
Approved on 18 October 2005
 
Pressure sensitivity level. Measurement microphone type LS1. Measurand unit, dB (reference: 1 V/Pa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.05 to 0.07
Reciprocity calibration IEC 61094-2:1992
Frequency: 2.5 kHz to 8 kHz
Approved on 18 October 2005
 
Pressure sensitivity level. Measurement microphone type LS1. Measurand unit, dB (reference: 1 V/Pa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.12
Reciprocity calibration IEC 61094-2:1992
Frequency: 10 kHz
Approved on 18 October 2005
 
Pressure sensitivity level. Measurement microphone type LS2. Measurand unit, dB (reference: 1 V/Pa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.10 to 0.07
Reciprocity calibration IEC 61094-2:1992
Frequency: 31 Hz to 63 Hz
Approved on 18 October 2005
 
Pressure sensitivity level. Measurement microphone type LS2. Measurand unit, dB (reference: 1 V/Pa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.07
Reciprocity calibration IEC 61094-2:1992
Frequency: 125 Hz to 8 kHz
Approved on 18 October 2005
 
Pressure sensitivity level. Measurement microphone type LS2. Measurand unit, dB (reference: 1 V/Pa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.08 to 0.12
Reciprocity calibration IEC 61094-2:1992
Frequency: 10 kHz to 16 kHz
Approved on 18 October 2005
 
Pressure sensitivity level. Measurement microphone type LS2. Measurand unit, dB (reference: 1 V/Pa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.22
Reciprocity calibration IEC 61094-2:1992
Frequency: 20 kHz
Approved on 18 October 2005
 
Free-field sensitivity level. Measurement microphone. Measurand unit, dB (reference: 1 V/Pa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.3 to 0.4
Sequential comparison
Frequency: 63 Hz to 5 kHz
Approved on 18 October 2005
 
Free-field sensitivity level. Measurement microphone. Measurand unit, dB (reference: 1 V/Pa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.4 to 0.6
Sequential comparison
Frequency: 6.3 kHz to 10 kHz
Approved on 18 October 2005
 
Free-field sensitivity level. Measurement microphone. Measurand unit, dB (reference: 1 V/Pa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.7
Sequential comparison
Frequency: 12.5 kHz
Approved on 18 October 2005
 
System response level. Sound level meter. Measurand unit, dB (reference: true sound pressure level)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.3 to 0.5
Sequential comparison
Frequency: 31.5 Hz to 5 kHz
Approved on 18 October 2005
 
System response level. Sound level meter. Measurand unit, dB (reference: true sound pressure level)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.5 to 0.7
Sequential comparison
Frequency: 6.3 kHz to 10 kHz
Approved on 18 October 2005
 
System response level. Sound level meter. Measurand unit, dB (reference: true sound pressure level)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.8
Sequential comparison
Frequency: 12.5 kHz
Approved on 18 October 2005
 
Sound pressure level. Pistonphone or sound calibrator, single frequency, 70 dB (reference: 20 µPa) to 130 dB (reference: 20 µPa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.07
Calibrated measurement microphone
Microphone type: LS1P
Approved on 18 October 2005
 
Sound pressure level. Pistonphone or sound calibrator, single frequency, 70 dB (reference: 20 µPa) to 130 dB (reference: 20 µPa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.08
Calibrated measurement microphone
Microphone type: WS1P
Approved on 18 October 2005
 
Sound pressure level. Pistonphone or sound calibrator, single frequency, 70 dB (reference: 20 µPa) to 130 dB (reference: 20 µPa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.08
Calibrated measurement microphone
Microphone type: LS2P
Approved on 18 October 2005
 
Sound pressure level. Pistonphone or sound calibrator, single frequency, 70 dB (reference: 20 µPa) to 130 dB (reference: 20 µPa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.1
Calibrated measurement microphone
Microphone type: WS2P
Approved on 18 October 2005
 
Sound pressure level. Sound calibrator, multi-frequency, 70 dB (reference: 20 µPa) to 115 dB (reference: 20 µPa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.12
Calibrated measurement microphone
Frequency: 31 Hz to 2 kHz
Microphone type: LS2P
Approved on 18 October 2005
 
Sound pressure level. Sound calibrator, multi-frequency, 70 dB (reference: 20 µPa) to 115 dB (reference: 20 µPa)
Absolute expanded uncertainty (k = 2, level of confidence 95 %) in dB: 0.16
Calibrated measurement microphone
Frequency: 4 kHz to 12.5 kHz
Microphone type: LS2P
Approved on 18 October 2005