Comparison Display

CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 20 Hz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

Pressure sensitivity level at 20 Hz

D_i / dB re 1 V/Pa

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 31.5 Hz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

Pressure sensitivity level at 31.5 Hz

D_i / dB re 1 V/Pa

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CCAUV.A-K6

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 63 Hz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

Pressure sensitivity level at 63 Hz

D_i / dB re 1 V/Pa

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 125 Hz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

Pressure sensitivity level at 125 Hz

D_i / dB re 1 V/Pa

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 250 Hz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

Pressure sensitivity level at 250 Hz

D_i / dB re 1 V/Pa

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 500 Hz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

Pressure sensitivity level at 500 Hz

D_i / dB re 1 V/Pa

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 1 kHz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

Pressure sensitivity level at 1 kHz

D_i / dB re 1 V/Pa

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 2 kHz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

Pressure sensitivity level at 2 kHz

D_i / dB re 1 V/Pa

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 4 kHz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

Pressure sensitivity level at 4 kHz

D_i / dB re 1 V/Pa

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 8 kHz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

Pressure sensitivity level at 8 kHz

D_i / dB re 1 V/Pa

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 12.5 kHz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

Pressure sensitivity level at 12.5 kHz

D_i / dB re 1 V/Pa

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 16 kHz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

Pressure sensitivity level at 16 kHz

D_i / dB re 1 V/Pa

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 25 kHz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

Pressure sensitivity level at 25 kHz

D_i / dB re 1 V/Pa

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 20 Hz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

LAB_i	D_i	U_i
	dB	dB
LNE	-0.007	0.029
HBK-DPLA	-0.034	0.053
METAS	-0.032	0.057
KRISS	-0.018	0.072
NMIJ	-0.004	0.063
GUM	0.021	0.044
UME	0.021	0.063
NMIA	0.014	0.091
CENAM	0.024	0.082
NRC	0.036	0.044
VNIIFTRI	-0.009	0.053
NMISA	0.003	0.044
INMETRO	-0.011	0.047

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 31.5 Hz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

LAB_i	D_i	U_i
	dB	dB
LNE	-0.009	0.027
HBK-DPLA	-0.026	0.044
METAS	-0.025	0.052
KRISS	-0.011	0.073
NMIJ	-0.004	0.044
GUM	0.021	0.035
UME	0.021	0.044
NMIA	0.011	0.073
CENAM	0.022	0.063
NRC	0.031	0.035
VNIIFTRI	-0.009	0.054
NMISA	-0.001	0.044
INMETRO	-0.015	0.043

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 63 Hz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

LAB_i	D_i	U_i
	dB	dB
LNE	-0.014	0.028
HBK-DPLA	-0.020	0.031
METAS	-0.017	0.047
KRISS	-0.010	0.045
NMIJ	-0.005	0.036
GUM	0.010	0.026
UME	0.015	0.026
NMIA	0.007	0.054
CENAM	0.019	0.045
NRC	0.015	0.026
VNIIFTRI	-0.010	0.054
NMISA	-0.007	0.026
INMETRO	-0.007	0.044

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CCAUV.A-K6

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 125 Hz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

LAB_i	D_i	U_i
	dB	dB
LNE	-0.014	0.028
HBK-DPLA	-0.011	0.026
METAS	-0.009	0.044
KRISS	0.001	0.045
NMIJ	-0.013	0.036
GUM	0.007	0.026
UME	0.017	0.026
NMIA	0.006	0.036
CENAM	0.018	0.045
NRC	0.012	0.026
VNIIFTRI	-0.013	0.055
NMISA	-0.008	0.026
INMETRO	-0.007	0.044

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CCAUV.A-K6

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 250 Hz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

LAB_i	D_i	U_i
	dB	dB
LNE	-0.016	0.029
HBK-DPLA	-0.006	0.021
METAS	-0.003	0.042
KRISS	0.008	0.036
NMIJ	-0.012	0.036
GUM	0.008	0.026
UME	0.018	0.026
NMIA	0.004	0.036
CENAM	0.013	0.045
NRC	0.003	0.026
VNIIFTRI	-0.012	0.055
NMISA	-0.009	0.026
INMETRO	-0.005	0.044

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 500 Hz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

LAB_i	D_i	U_i
	dB	dB
LNE	-0.017	0.029
HBK-DPLA	-0.002	0.016
METAS	-0.001	0.041
KRISS	0.013	0.036
NMIJ	-0.010	0.036
GUM	0.010	0.026
UME	0.015	0.026
NMIA	0.002	0.036
CENAM	0.012	0.045
NRC	0.005	0.026
VNIIFTRI	-0.015	0.055
NMISA	-0.011	0.026
INMETRO	-0.007	0.044

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 1 kHz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

LAB_i	D_i	U_i
	dB	dB
LNE	-0.018	0.029
HBK-DPLA	0.001	0.011
METAS	0.000	0.041
KRISS	0.015	0.036
NMIJ	-0.011	0.036
GUM	0.004	0.026
UME	0.014	0.026
NMIA	0.002	0.036
CENAM	0.010	0.045
NRC	0.004	0.026
VNIIFTRI	-0.016	0.055
NMISA	-0.013	0.026
INMETRO	-0.009	0.044

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 2 kHz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

LAB_i	D_i	U_i
	dB	dB
LNE	-0.019	0.029
HBK-DPLA	0.002	0.011
METAS	0.002	0.040
KRISS	0.019	0.036
NMIJ	-0.013	0.036
GUM	0.007	0.026
UME	0.012	0.026
NMIA	0.001	0.036
CENAM	0.010	0.045
NRC	0.002	0.026
VNIIFTRI	-0.018	0.055
NMISA	-0.013	0.026
INMETRO	-0.013	0.044

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 4 kHz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

LAB_i	D_i	U_i
	dB	dB
LNE	-0.021	0.029
HBK-DPLA	0.004	0.011
METAS	0.003	0.039
KRISS	0.023	0.036
NMIJ	-0.010	0.036
GUM	0.005	0.026
UME	0.015	0.036
NMIA	-0.001	0.036
CENAM	0.008	0.055
NRC	0.005	0.026
VNIIFTRI	-0.025	0.055
NMISA	-0.013	0.026
INMETRO	-0.023	0.044

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 8 kHz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

LAB_i	D_i	U_i
	dB	dB
LNE	-0.029	0.031
HBK-DPLA	0.004	0.011
METAS	0.003	0.040
KRISS	0.023	0.036
NMIJ	-0.021	0.036
GUM	-0.016	0.045
UME	0.004	0.045
NMIA	0.002	0.036
CENAM	0.001	0.055
NRC	0.014	0.026
VNIIFTRI	-0.026	0.055
NMISA	-0.011	0.036
INMETRO	-0.059	0.046

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 12.5 kHz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

LAB_i	D_i	U_i
	dB	dB
LNE	-0.032	0.036
HBK-DPLA	0.005	0.010
METAS	0.008	0.058
KRISS	0.015	0.054
NMIJ	-0.030	0.036
GUM	-0.035	0.073
UME	0.000	0.054
NMIA	0.012	0.054
CENAM	-0.007	0.092
NRC	0.025	0.036
VNIIFTRI	-0.035	0.082
NMISA	-0.004	0.036
INMETRO	-0.117	0.046

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 16 kHz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

LAB_i	D_i	U_i
	dB	dB
LNE	-0.033	0.044
HBK-DPLA	0.011	0.018
METAS	0.021	0.084
KRISS	-0.007	0.063
NMIJ	-0.037	0.044
GUM	-0.057	0.072
UME	-0.012	0.072
NMIA	0.026	0.072
CENAM	-0.008	0.119
NRC	0.028	0.053
VNIIFTRI	-0.047	0.119
NMISA	0.000	0.053
INMETRO	-0.132	0.053

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MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 25 kHz

Degrees of equivalence represented by D_i and its expanded uncertainty U_i at a 95 % level of confidence, expressed in dB re 1 V/Pa.

LAB_i	D_i	U_i
	dB	dB
LNE	-0.041	0.120
HBK-DPLA	-0.003	0.049
METAS	0.065	0.382
KRISS	0.150	0.227
NMIJ	0.008	0.189
GUM	-0.137	0.217
UME	0.023	0.180
NMIA	0.022	0.132
CENAM	0.021	0.366
NRC	0.013	0.339
VNIIFTRI	0.048	0.459
NMISA	0.006	0.132
INMETRO	-0.014	0.153

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CCAUV.A-K6

Comparison

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Information & contact
Participants

Metrology area, Sub-field	Acoustics, Ultrasound, Vibration, Acoustics
Description	Primary pressure calibration of laboratory standard microphones LS2P
Time of measurements	2019 - 2020
Status	Approved for equivalence

Final Reports of the comparisons	Metrologia 2023 60 Tech. Suppl. 09001
References	CCAUV.A-K6 Technical Protocol CCAUV.A-K6 Registration and progress form
Measurand	Sensitivity level (dB ref 1V/Pa): 2 Hz - 20 Hz (optional), 20 Hz - 25 kHz (mandatory) Sensitivity phase (degree): 2 Hz - 25 kHz (optional)
Transfer device	Microphones Brüel & Kjær type 4180 serial numbers 2124385 and 2412872

Comparison type	Key Comparison
Consultative Committee	CCAUV (Consultative Committee for Acoustics, Ultrasound and Vibration)
Conducted by	CCAUV (Consultative Committee for Acoustics, Ultrasound and Vibration)
Comments	This comparison is a repeat of CCAUV.A-K3
Pilot institute	LNE Laboratoire national de métrologie et d'essais France
Contact person	Dominique Rodrigues +33 1 30 69 14 87

Pilot laboratory
LNE	Laboratoire national de métrologie et d'essais, France, EURAMET

CENAM

Centro Nacional de Metrologia, Mexico, SIM

GUM	Glowny Urzad Miar, Central Office of Measures, Poland, EURAMET

HBK-DPLA

Hottinger Brüel & Kjaer A/S - Danish Primary Laboratory for Acoustics Section, Denmark, EURAMET

INMETRO

Instituto Nacional de Metrologia, Qualidade e Tecnologia, Brazil, SIM

KRISS

Korea Research Institute of Standards and Science, Korea, Republic of, APMP

METAS

Federal Institute of Metrology, Switzerland, EURAMET

NMIA	National Measurement Institute, Australia, Australia, APMP

NMIJ AIST

National Metrology Institute of Japan, Japan, APMP

NMISA

National Metrology Institute of South Africa, South Africa, AFRIMETS

NRC	National Research Council, Canada, SIM

UME	TÜBITAK Ulusal Metroloji Enstitüsü, Türkiye, EURAMET

VNIIFTRI

Institute of Physical Technical and Radiotechnical Measurements, Rosstandart, Russian Federation, COOMET

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 20 Hz

For each microphone, the key comparison reference value x_R and its expanded uncertainty U_R(k = 2) are computed with exclusions as explained in section 7 of the CCAUV.A-K6 Final report (unit is dB re 1 V/Pa).

Microphone	x_R	U_R
Microphone	dB	dB
4180.212439	-38.076	0.016
4180.241287	-37.806	0.016

The degree of equivalence of laboratory i relative to the reference value is given by a pair of terms expressed in dB re 1 V/Pa:

D_i and U_iits expanded uncertainty (k = 2). The degrees of equivalence are computed as explained in section 7 of CCAUV.A-K6 Final report.

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 31.5 Hz

Microphone	x_R	U_R
Microphone	dB	dB
4180.212439	-38.092	0.014
4180.241287	-37.829	0.014

The degree of equivalence of laboratory i relative to the reference value is given by a pair of terms expressed in dB re 1 V/Pa:

D_i and U_iits expanded uncertainty (k = 2). The degrees of equivalence are computed as explained in section 7 of CCAUV.A-K6 Final report.

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 63 Hz

Microphone	x_R	U_R
Microphone	dB	dB
4180.212439	-38.113	0.011
4180.241287	-37.847	0.011

The degree of equivalence of laboratory i relative to the reference value is given by a pair of terms expressed in dB re 1 V/Pa:

D_i and U_iits expanded uncertainty (k = 2). The degrees of equivalence are computed as explained in section 7 of CCAUV.A-K6 Final report.

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 125 Hz

Microphone	x_R	U_R
Microphone	dB	dB
4180.212439	-38.130	0.010
4180.241287	-37.864	0.010

The degree of equivalence of laboratory i relative to the reference value is given by a pair of terms expressed in dB re 1 V/Pa:

D_i and U_iits expanded uncertainty (k = 2). The degrees of equivalence are computed as explained in section 7 of CCAUV.A-K6 Final report.

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 250 Hz

Microphone	x_R	U_R
Microphone	dB	dB
4180.212439	-38.142	0.010
4180.241287	-37.875	0.010

The degree of equivalence of laboratory i relative to the reference value is given by a pair of terms expressed in dB re 1 V/Pa:

D_i and U_iits expanded uncertainty (k = 2). The degrees of equivalence are computed as explained in section 7 of CCAUV.A-K6 Final report.

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 500 Hz

Microphone	x_R	U_R
Microphone	dB	dB
4180.212439	-38.148	0.009
4180.241287	-37.882	0.009

The degree of equivalence of laboratory i relative to the reference value is given by a pair of terms expressed in dB re 1 V/Pa:

D_i and U_iits expanded uncertainty (k = 2). The degrees of equivalence are computed as explained in section 7 of CCAUV.A-K6 Final report.

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 1 kHz

Microphone	x_R	U_R
Microphone	dB	dB
4180.212439	-38.146	0.009
4180.241287	-37.882	0.009

The degree of equivalence of laboratory i relative to the reference value is given by a pair of terms expressed in dB re 1 V/Pa:

D_i and U_iits expanded uncertainty (k = 2). The degrees of equivalence are computed as explained in section 7 of CCAUV.A-K6 Final report.

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 2 kHz

Microphone	x_R	U_R
Microphone	dB	dB
4180.212439	-38.122	0.009
4180.241287	-37.862	0.009

The degree of equivalence of laboratory i relative to the reference value is given by a pair of terms expressed in dB re 1 V/Pa:

D_i and U_iits expanded uncertainty (k = 2). The degrees of equivalence are computed as explained in section 7 of CCAUV.A-K6 Final report.

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 4 kHz

Microphone	x_R	U_R
Microphone	dB	dB
4180.212439	-38.017	0.009
4180.241287	-37.772	0.009

The degree of equivalence of laboratory i relative to the reference value is given by a pair of terms expressed in dB re 1 V/Pa:

D_i and U_iits expanded uncertainty (k = 2). The degrees of equivalence are computed as explained in section 7 of CCAUV.A-K6 Final report.

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 8 kHz

Microphone	x_R	U_R
Microphone	dB	dB
4180.212439	-37.651	0.010
4180.241287	-37.477	0.010

The degree of equivalence of laboratory i relative to the reference value is given by a pair of terms expressed in dB re 1 V/Pa:

D_i and U_iits expanded uncertainty (k = 2). The degrees of equivalence are computed as explained in section 7 of CCAUV.A-K6 Final report.

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 12.5 kHz

Microphone	x_R	U_R
Microphone	dB	dB
4180.212439	-37.315	0.011
4180.241287	-37.294	0.011

The degree of equivalence of laboratory i relative to the reference value is given by a pair of terms expressed in dB re 1 V/Pa:

D_i and U_iits expanded uncertainty (k = 2). The degrees of equivalence are computed as explained in section 7 of CCAUV.A-K6 Final report.

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 16 kHz

Microphone	x_R	U_R
Microphone	dB	dB
4180.212439	-37.603	0.016
4180.241287	-37.693	0.015

The degree of equivalence of laboratory i relative to the reference value is given by a pair of terms expressed in dB re 1 V/Pa:

D_i and U_iits expanded uncertainty (k = 2). The degrees of equivalence are computed as explained in section 7 of CCAUV.A-K6 Final report.

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 25 kHz

Mic	x_R	U_R
Mic	dB	dB
4180.212439	-41.939	0.045
4180.241287	-42.057	0.046

The degree of equivalence of laboratory i relative to the reference value is given by a pair of terms expressed in dB re 1 V/Pa:

D_i and U_iits expanded uncertainty (k = 2). The degrees of equivalence are computed as explained in section 7 of CCAUV.A-K6 Final report.

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CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 20 Hz

x_i measured sensitivity reported by laboratory i, Lab_i

U_i expanded uncertainty (k = 2) of x_i

Note: The values in bold have been excluded from the calculation of the Key Comparison Reference Values

Microphone 4180.2124385
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-38.085	0.035
HBK-DPLA	-38.100	0.060
METAS	-38.100	0.061
KRISS	-38.10	0.08
NMIJ	-38.08	0.07
GUM	-38.06	0.05
UME	-38.05	0.07
NMIA	-38.06	0.10
CENAM	-38.053	0.09
NRC	-38.04	0.05
VNIIFTRI	-38.09	0.06
NMISA	-38.070	0.050
INMETRO	-38.087	0.050

Microphone 4180.2412872
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-37.811	0.035
HBK-DPLA	-37.849	0.060
METAS	-37.846	0.066
KRISS	-37.82	0.08
NMIJ	-37.81	0.07
GUM	-37.78	0.05
UME	-37.79	0.07
NMIA	-37.79	0.10
CENAM	-37.781	0.09
NRC	-37.77	0.05
VNIIFTRI	-37.81	0.06
NMISA	-37.806	0.050
INMETRO	-37.745	0.050

print out

CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 31.5 Hz

x_i measured sensitivity reported by laboratory i, Lab_i

U_i expanded uncertainty (k = 2) of x_i

Note: The values in bold have been excluded from the calculation of the Key Comparison Reference Values

Microphone 4180.2124385
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-38.105	0.035
HBK-DPLA	-38.112	0.050
METAS	-38.111	0.055
KRISS	-38.11	0.08
NMIJ	-38.10	0.05
GUM	-38.08	0.04
UME	-38.07	0.05
NMIA	-38.08	0.08
CENAM	-38.074	0.07
NRC	-38.06	0.04
VNIIFTRI	-38.11	0.06
NMISA	-38.094	0.050
INMETRO	-38.107	0.045

Microphone 4180.2412872
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-37.835	0.030
HBK-DPLA	-37.862	0.050
METAS	-37.860	0.061
KRISS	-37.83	0.08
NMIJ	-37.83	0.05
GUM	-37.80	0.04
UME	-37.81	0.05
NMIA	-37.82	0.08
CENAM	-37.803	0.07
NRC	-37.80	0.04
VNIIFTRI	-37.83	0.06
NMISA	-37.829	0.050
INMETRO	-37.763	0.045

print out

CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 63 Hz

x_i measured sensitivity reported by laboratory i, Lab_i

U_i expanded uncertainty (k = 2) of x_i

Note: The values in bold have been excluded from the calculation of the Key Comparison Reference Values

Microphone 4180.2124385
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-38.129	0.035
HBK-DPLA	-38.125	0.035
METAS	-38.124	0.049
KRISS	-38.13	0.05
NMIJ	-38.12	0.04
GUM	-38.11	0.03
UME	-38.09	0.03
NMIA	-38.11	0.06
CENAM	-38.096	0.05
NRC	-38.10	0.03
VNIIFTRI	-38.13	0.06
NMISA	-38.120	0.030
INMETRO	-38.12	0.045

Microphone 4180.2412872
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-37.860	0.030
HBK-DPLA	-37.875	0.035
METAS	-37.871	0.055
KRISS	-37.85	0.05
NMIJ	-37.85	0.04
GUM	-37.83	0.03
UME	-37.84	0.03
NMIA	-37.84	0.06
CENAM	-37.827	0.05
NRC	-37.83	0.03
VNIIFTRI	-37.85	0.06
NMISA	-37.855	0.030
INMETRO	-37.785	0.045

print out

CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 125 Hz

x_i measured sensitivity reported by laboratory i, Lab_i

U_i expanded uncertainty (k = 2) of x_i

Note: The values in bold have been excluded from the calculation of the Key Comparison Reference Values

Microphone 4180.2124385
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-38.145	0.035
HBK-DPLA	-38.134	0.030
METAS	-38.133	0.045
KRISS	-38.14	0.05
NMIJ	-38.14	0.04
GUM	-38.13	0.03
UME	-38.11	0.03
NMIA	-38.13	0.04
CENAM	-38.114	0.05
NRC	-38.12	0.03
VNIIFTRI	-38.15	0.06
NMISA	-38.138	0.030
INMETRO	-38.137	0.045

Microphone 4180.2412872
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-37.877	0.030
HBK-DPLA	-37.883	0.030
METAS	-37.880	0.052
KRISS	-37.86	0.05
NMIJ	-37.88	0.04
GUM	-37.85	0.03
UME	-37.85	0.03
NMIA	-37.86	0.04
CENAM	-37.845	0.05
NRC	-37.85	0.03
VNIIFTRI	-37.87	0.06
NMISA	-37.872	0.030
INMETRO	-37.798	0.045

print out

CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 250 Hz

x_i measured sensitivity reported by laboratory i, Lab_i

U_i expanded uncertainty (k = 2) of x_i

Note: The values in bold have been excluded from the calculation of the Key Comparison Reference Values

Microphone 4180.2124385
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-38.159	0.035
HBK-DPLA	-38.141	0.025
METAS	-38.138	0.043
KRISS	-38.14	0.04
NMIJ	-38.15	0.04
GUM	-38.14	0.03
UME	-38.12	0.03
NMIA	-38.14	0.04
CENAM	-38.130	0.05
NRC	-38.14	0.03
VNIIFTRI	-38.16	0.06
NMISA	-38.151	0.030
INMETRO	-38.147	0.045

Microphone 4180.2412872
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-37.889	0.030
HBK-DPLA	-37.888	0.025
METAS	-37.886	0.051
KRISS	-37.86	0.04
NMIJ	-37.89	0.04
GUM	-37.86	0.03
UME	-37.86	0.03
NMIA	-37.87	0.04
CENAM	-37.860	0.05
NRC	-37.87	0.03
VNIIFTRI	-37.88	0.06
NMISA	-37.884	0.030
INMETRO	-37.808	0.045

print out

CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 500 Hz

x_i measured sensitivity reported by laboratory i, Lab_i

U_i expanded uncertainty (k = 2) of x_i

Note: The values in bold have been excluded from the calculation of the Key Comparison Reference Values

Microphone 4180.2124385
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-38.167	0.035
HBK-DPLA	-38.144	0.020
METAS	-38.143	0.042
KRISS	-38.14	0.04
NMIJ	-38.16	0.04
GUM	-38.15	0.03
UME	-38.13	0.03
NMIA	-38.15	0.04
CENAM	-38.138	0.05
NRC	-38.14	0.03
VNIIFTRI	-38.17	0.06
NMISA	-38.159	0.030
INMETRO	-38.155	0.045

Microphone 4180.2412872
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-37.896	0.030
HBK-DPLA	-37.890	0.020
METAS	-37.888	0.050
KRISS	-37.86	0.04
NMIJ	-37.89	0.04
GUM	-37.86	0.03
UME	-37.87	0.03
NMIA	-37.88	0.04
CENAM	-37.868	0.05
NRC	-37.88	0.03
VNIIFTRI	-37.89	0.06
NMISA	-37.892	0.030
INMETRO	-37.815	0.045

print out

CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 1 kHz

x_i measured sensitivity reported by laboratory i, Lab_i

U_i expanded uncertainty (k = 2) of x_i

Note: The values in bold have been excluded from the calculation of the Key Comparison Reference Values

Microphone 4180.2124385
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-38.167	0.035
HBK-DPLA	-38.140	0.015
METAS	-38.141	0.041
KRISS	-38.14	0.04
NMIJ	-38.16	0.04
GUM	-38.15	0.03
UME	-38.13	0.03
NMIA	-38.15	0.04
CENAM	-38.138	0.05
NRC	-38.14	0.03
VNIIFTRI	-38.17	0.06
NMISA	-38.160	0.030
INMETRO	-38.155	0.045

Microphone 4180.2412872
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-37.897	0.030
HBK-DPLA	-37.886	0.015
METAS	-37.887	0.049
KRISS	-37.86	0.04
NMIJ	-37.89	0.04
GUM	-37.87	0.03
UME	-37.87	0.03
NMIA	-37.88	0.04
CENAM	-37.869	0.05
NRC	-37.88	0.03
VNIIFTRI	-37.89	0.06
NMISA	-37.893	0.030
INMETRO	-37.817	0.045

print out

CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 2 kHz

x_i measured sensitivity reported by laboratory i, Lab_i

U_i expanded uncertainty (k = 2) of x_i

Note: The values in bold have been excluded from the calculation of the Key Comparison Reference Values

Microphone 4180.2124385
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-38.144	0.035
HBK-DPLA	-38.115	0.015
METAS	-38.115	0.040
KRISS	-38.11	0.04
NMIJ	-38.14	0.04
GUM	-38.12	0.03
UME	-38.11	0.03
NMIA	-38.13	0.04
CENAM	-38.115	0.05
NRC	-38.12	0.03
VNIIFTRI	-38.15	0.06
NMISA	-38.136	0.030
INMETRO	-38.135	0.045

Microphone 4180.2412872
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-37.878	0.030
HBK-DPLA	-37.864	0.015
METAS	-37.865	0.049
KRISS	-37.83	0.04
NMIJ	-37.87	0.04
GUM	-37.85	0.03
UME	-37.85	0.03
NMIA	-37.86	0.04
CENAM	-37.849	0.05
NRC	-37.86	0.03
VNIIFTRI	-37.87	0.06
NMISA	-37.873	0.030
INMETRO	-37.801	0.045

print out

CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 4 kHz

x_i measured sensitivity reported by laboratory i, Lab_i

U_i expanded uncertainty (k = 2) of x_i

Note: The values in bold have been excluded from the calculation of the Key Comparison Reference Values

Microphone 4180.2124385
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-38.042	0.035
HBK-DPLA	-38.008	0.015
METAS	-38.010	0.039
KRISS	-38.00	0.04
NMIJ	-38.03	0.04
GUM	-38.02	0.03
UME	-38.00	0.04
NMIA	-38.02	0.04
CENAM	-38.012	0.06
NRC	-38.01	0.03
VNIIFTRI	-38.05	0.06
NMISA	-38.031	0.030
INMETRO	-38.04	0.045

Microphone 4180.2412872
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-37.789	0.030
HBK-DPLA	-37.773	0.015
METAS	-37.773	0.047
KRISS	-37.74	0.04
NMIJ	-37.78	0.04
GUM	-37.76	0.03
UME	-37.76	0.04
NMIA	-37.77	0.04
CENAM	-37.762	0.06
NRC	-37.77	0.03
VNIIFTRI	-37.79	0.06
NMISA	-37.784	0.030
INMETRO	-37.723	0.045

print out

CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 8 kHz

x_i measured sensitivity reported by laboratory i, Lab_i

U_i expanded uncertainty (k = 2) of x_i

Note: The values in bold have been excluded from the calculation of the Key Comparison Reference Values

Microphone 4180.2124385
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-37.688	0.040
HBK-DPLA	-37.644	0.015
METAS	-37.645	0.041
KRISS	-37.64	0.04
NMIJ	-37.67	0.04
GUM	-37.67	0.05
UME	-37.65	0.05
NMIA	-37.65	0.04
CENAM	-37.650	0.06
NRC	-37.64	0.03
VNIIFTRI	-37.68	0.06
NMISA	-37.662	0.040
INMETRO	-37.71	0.045

Microphone 4180.2412872
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-37.497	0.030
HBK-DPLA	-37.475	0.015
METAS	-37.477	0.048
KRISS	-37.45	0.04
NMIJ	-37.50	0.04
GUM	-37.49	0.05
UME	-37.47	0.05
NMIA	-37.47	0.04
CENAM	-37.476	0.06
NRC	-37.46	0.03
VNIIFTRI	-37.50	0.06
NMISA	-37.487	0.040
INMETRO	-37.475	0.045

print out

CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 12.5 kHz

x_i measured sensitivity reported by laboratory i, Lab_i

U_i expanded uncertainty (k = 2) of x_i

Note: The values in bold have been excluded from the calculation of the Key Comparison Reference Values

Microphone 4180.2124385
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-37.365	0.045
HBK-DPLA	-37.312	0.015
METAS	-37.308	0.060
KRISS	-37.31	0.06
NMIJ	-37.34	0.04
GUM	-37.35	0.08
UME	-37.32	0.06
NMIA	-37.30	0.06
CENAM	-37.316	0.10
NRC	-37.29	0.04
VNIIFTRI	-37.35	0.09
NMISA	-37.318	0.040
INMETRO	-37.432	0.045

Microphone 4180.2412872
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-37.308	0.030
HBK-DPLA	-37.288	0.015
METAS	-37.285	0.067
KRISS	-37.27	0.06
NMIJ	-37.33	0.04
GUM	-37.33	0.08
UME	-37.29	0.06
NMIA	-37.28	0.06
CENAM	-37.308	0.10
NRC	-37.27	0.04
VNIIFTRI	-37.33	0.09
NMISA	-37.300	0.040
INMETRO	-37.379	0.045

print out

CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 16 kHz

x_i measured sensitivity reported by laboratory i, Lab_i

U_i expanded uncertainty (k = 2) of x_i

Note: The values in bold have been excluded from the calculation of the Key Comparison Reference Values

Microphone 4180.2124385
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-37.666	0.055
HBK-DPLA	-37.595	0.025
METAS	-37.586	0.090
KRISS	-37.61	0.07
NMIJ	-37.63	0.05
GUM	-37.66	0.08
UME	-37.62	0.08
NMIA	-37.57	0.08
CENAM	-37.601	0.13
NRC	-37.57	0.06
VNIIFTRI	-37.64	0.13
NMISA	-37.603	0.060
INMETRO	-37.735	0.050

Microphone 4180.2412872
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-37.696	0.035
HBK-DPLA	-37.679	0.025
METAS	-37.668	0.095
KRISS	-37.70	0.07
NMIJ	-37.74	0.05
GUM	-37.75	0.08
UME	-37.70	0.08
NMIA	-37.67	0.08
CENAM	-37.712	0.13
NRC	-37.67	0.06
VNIIFTRI	-37.75	0.13
NMISA	-37.693	0.060
INMETRO	-37.827	0.050

print out

CCAUV.A-K6

MEASURAND Pressure sensitivity level

NOMINAL FREQUENCY 25 kHz

x_i measured sensitivity reported by laboratory i, Lab_i

U_i expanded uncertainty (k = 2) of x_i

Note: The values in bold have been excluded from the calculation of the Key Comparison Reference Values

Microphone 4180.2124385
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-42.013	0.145
HBK-DPLA	-41.934	0.070
METAS	-41.916	0.414
KRISS	-41.78	0.25
NMIJ	-41.96	0.21
GUM	-42.08	0.24
UME	-41.90	0.20
NMIA	-41.90	0.15
CENAM	-41.938	0.40
NRC	-41.94	0.37
VNIIFTRI	-41.90	0.50
NMISA	-41.929	0.150
INMETRO	-41.953	0.160

Microphone 4180.2412872
Lab_i	x_i	U_i
Lab_i	dB re 1 V/Pa	dB
LNE	-42.066	0.130
HBK-DPLA	-42.069	0.070
METAS	-41.950	0.419
KRISS	-41.91	0.25
NMIJ	-42.02	0.21
GUM	-42.19	0.24
UME	-42.05	0.20
NMIA	-42.05	0.15
CENAM	-42.017	0.40
NRC	-42.03	0.37
VNIIFTRI	-42.00	0.50
NMISA	-42.056	0.150
INMETRO	-42.168	0.160

KCDB

CIPM MRA

CLASSIFICATION OF SERVICES

Key and supplementary comparisons - Print out