National Measurement Institute (NMI)

Site

Acoustics, Ultrasonics and Vibration Project, Lindfield

Accreditation No.

1

Site No.

14535

Date of Accreditation

12 Dec 2002

Address

36 Bradfield Road
Lindfield West, NSW 2070
Australia

measurement.gov.au

Contact

Ms Charmaine Kwan P: +61 (02) 84673836

Availability

Services conditionally available to external clients

Scope of Accreditation

Print scopes
Acoustics, Ultrasonics and Vibration Project, Lindfield

ISO/IEC 17025 (2017)

Calibration

  • The uncertainty of measurement is reported as an expanded uncertainty having a level of confidence of 95% unless stated otherwise
Service Product Determinant Technique Procedure Limitations
Acoustical metrology - Acoustic equipment Attenuators Attenuation Direct measurement by electrical input

Capability

with calibration and measurement capability of -
0.003 dB for attenuation equal to and less than 40 dB
0.006 dB for attenuation from 40 dB to 60 dB
0.008 dB for attenuation from 60 dB to 70 dB
0.015 dB for attenuation from 70 dB to 80 dB
0.05 dB for attenuation from 80 dB to 90 dB
0.15 dB for attenuation from 90 dB to 100 dB
0.45 dB for attenuation from 100 dB to 110 dB
Band pass filters Attenuation Direct measurement by electrical input

By methods of -

AS/NZS 4476, IEC 61260

Capability

with calibration and measurement capability of -
0.1 dB for attenuation equal to and less than 40 dB
0.2 dB for attenuation from above 40 dB to 60 dB
0.3 dB for attenuation from above 60 dB to 80 dB
Sound level meters Electrical response; Sound pressure level Direct measurement against a reference instrument By methods of AS 1259.1:1990; AS 1259.2:1990; IEC 61672-3; IEC 60651:2001

Capability

with calibration and measurement capability of -
Electrical tests,
0.08 dB for frequency range 31.5 Hz to 20 kHz
Acoustic tests,
0.2 dB from 31.5 Hz to below 10 kHz
0.3 dB from 10 kHz to below 12.5 kHz
0.4 dB from 12.5 kHz to 20 kHz
Acoustical metrology - Acoustic standards and reference equipment Acoustic calibrators - Multi frequency; Acoustic calibrators - Single frequency; Pistonphones; Reference sound sources Distortion; Frequency; Sound pressure level Comparison with a reference standard By methods of AS/IEC 60942; IEC 60942.

Capability

with calibration and measurement capability of -
0.09 dB at 31.5 Hz to below 63 Hz
0.08 dB from 63 Hz to below 125 Hz
0.07 dB from 125 Hz to below 1 kHz
0.06 dB at 1 kHz
0.07 dB from 1 kHz to below 4 kHz
0.08 dB from 4 kHz to below 8 kHz
0.09 dB from 8 kHz to below 12.5 kHz
0.15 dB from 12.5 kHz to below 16 kHz
0.23 dB at 16 kHz
Reference microphones Free field response Substitution comparison

Capability

Free field response by substitution comparison

with calibration and measurement capability of -

0.2 dB from 31.5 Hz to below 10 kHz
0.3 dB from 10 kHz to below 12.5 kHz
0.4 dB from 12.5 kHz to 20 kHz
Frequency response Direct measurement by active coupler; Direct measurement by electrostatic actuator

Capability

Frequency response by electrostatic actuator method over the
frequency range 20 Hz to 20 kHz

with calibration and measurement capability of-

0.1 dB for frequency response by actuator up to 10 kHz for type WS1
microphones and to 20 kHz for type WS2 microphones
Frequency response for low frequency microphones in the range 1 Hz
to 250 Hz using a large volume active coupler

with calibration and measurement capability of-

0.4 dB from 1 Hz to 200 Hz
1.0 dB from above 200 Hz to 250 Hz
Pressure sensitivity Pressure field comparison measurement; Reciprocity method

Capability

Pressure sensitivity by reciprocity method according to IEC 61094-2
between 20 Hz and 10 kHz for LS1 microphones
0.1 dB from 20 Hz to 25 Hz 

with calibration and measurement capability of -

0.08 dB from above 25 Hz to 50 Hz
0.04 dB from above 50 Hz to 5 kHz
0.06 dB from above 5 kHz to 8 kHz
0.08 dB from above 8 kHz to 10 kHz
and between 20 Hz and 31.5 kHz for LS2 microphones

with calibration and measurement capability of-

0.1 dB from 20 Hz to 25 Hz
0.08 dB from above 25 Hz to 50 Hz
0.06 dB from above 50 Hz to 100 Hz
0.05 dB from above 100 Hz to below 500 Hz
0.04 dB from 500 Hz to 8 kHz
0.05 dB from above 8 kHz to 10 kHz
0.06 dB from above 10 kHz to 12.5 kHz
0.08 dB from above 12.5 kHz to 16 kHz
0.10 dB from above 16 kHz to 20 kHz
0.15 dB from above 20 kHz to 25 kHz
0.25 dB from above 25 kHz to 31.5 kHz
Pressure sensitivity by modified reciprocity method at 250 Hz, 500 Hz or 1 kHz

with calibration and measurement capability of-

0.05 dB for microphone classes: LS1
0.06 dB for microphone classes: WS1

Pressure sensitivity of LS2 and WS2 type microphones by comparison
using an active coupler in the frequency range 20 Hz to 25 kHz
with calibration and measurement capability of -
0.13 dB from 20 Hz to 50 Hz
0.08 dB from above 50 to 4 kHz
0.10 dB from above 4 kHz to 15 kHz
0.13 dB from above 15 kHz to 20 kHz
0.18 dB from above 20 kHz to 23 kHz
0.26 dB from above 23 kHz to 25 kHz
and for other sizes in the range 20 Hz to 1 kHz
with Calibration and Measurement Capability of -
0.15 dB from 20 Hz to 25 Hz
0.10 dB from above 25 to 50 Hz
0.07 dB from above 50 Hz to 1 kHz
Ultrasonics - Ultrasonic measuring equipment Ultrasonic power meters Power Direct measurement of radiation force

IEC 61161

Capability

Calibration of ultrasonic force (power) balances by transfer from calibrated ultrasonic transducer according to IEC 61161
across the frequency range from 0.5 MHz to 25 MHz
with least uncertainties of measurement of -
8% of reading from 10 mW to 100 mW
5% of reading from 100 mW to 1 W
7% of reading from 1 W to 20 W
Ultrasonic transducers Power Direct measurement of radiation force

IEC 61161

Capability

Calibration of power output of ultrasonic transducers in liquids- radiation force
method according to IEC 61161
across the frequency range from 0.5 MHz to 25 MHz
with least uncertainties of measurement of -
6% of reading from 10 mW to 100 mW
3% of reading from 100 mW to 1 W
5% of reading from 1 W to 20 W
Vibration metrology - Vibration equipment Accelerometers; Machine condition monitoring equipment; Velocity transducers; Vibration analysers; Vibration measuring systems Acceleration sensitivity; Displacement sensitivity; Velocity sensitivity Comparison against reference standard

by method ISO 16063-11

For frequency range 0 Hz to 10 kHz

and acceleration range 0.01 m/s2 to 1000 m/s2

Capability

Absolute calibration of complex vibration amplitude sensitivity by interferometry from 0.5 Hz to 10 kHz by the methods of ISO 16063-11
Transducer response in voltage sensitivity, current sensitivity, charge sensitivity or displayed units
with calibration and measurement capability of -
Magnitude:
0.3% of reading from 0.5 Hz to below 9 kHz
0.5% of reading from 9 kHz to 10 kHz
Phase:
0.5° from 0.5 Hz to below 5 kHz
1° from 5 kHz to 10 kHz
In the acceleration range (or equivalent) 0.01 m/s2 up to 10 m/s2 below 10 Hz, up to 50 m/s2 from 10 Hz, up to 100 m/s2 from 40 Hz, up to 1000 m/s2 from 160 Hz, and up to 5000 m/s2 at approximately 650 Hz
Extended lower velocity range down to 1 mm/s from 0.5 Hz to below 2 Hz
Vibration transducers of mass up to 5000 grams for frequencies of 6 kHz and below, and up to 100 grams for frequencies of 10 kHz and below
by comparison to the methods of ISO 16063-21
with calibration and measurement capability of -
Magnitude:
0.4% of reading from 0.5 Hz to below 5 kHz
0.5% of reading from 5 kHz to below 6.3 kHz
0.6% of reading from 6.3 kHz to 10 kHz
Phase:
0.7° from 0.5 Hz to below 630 Hz
0.8° from 630 Hz to below 2.5 kHz
0.9° from 2.5 kHz to below 5 kHz
1.2° from 5 kHz to 10 kHz
In the acceleration range (or equivalent) 0.01 m/s2 up to 10 m/s2 below 10 Hz, up to 50 m/s2 from 10 Hz, up to 100 m/s2 from 40 Hz, up to 1000 m/s2 from 160 Hz, and up to 5000 m/s2 at approximately 650 Hz

Very low frequency calibration with an acceleration of up to 9.8 m/s2
with least uncertainties of measurement of -
0.2% of reading at zero Hertz (DC)
0.2% of reading from 0.01 Hz to below 5 Hz
0.3% of reading from 5 Hz to below 10 Hz
0.4% of reading at 10 Hz

Calibration of laser vibrometers, including laser Doppler vibrometers (LDV), for complex vibration sensitivity by the methods of ISO 16063-41
with least calibration and measurement capability of -
Magnitude:
0.3% of reading from 0.5 Hz to below 5 kHz
0.4% of reading from 5 kHz to below 6.3 kHz
0.5% of reading from 6.3 kHz to 10 kHz
Phase:
0.5° from 0.5 Hz to below 5 kHz
1° from 5 kHz to 10 kHz
Accelerometers; Shock measuring systems; Velocity transducers Acceleration sensitivity; Velocity sensitivity Comparison measurement against reference transducer; Direct measurement by interferometer

Capability

Calibration and verification of shock measuring systems which include accelerometers, for compliance to requirements of SAE j211b, SAE j211/1 and ISO 6487 channel frequency class 60 Hz, 180 Hz, 600 Hz or 1000 Hz

For frequency range 80 Hz to 8 kHz and acceleration up to 5000 m/s2 with steady state excitation in accordance with ISO 16063-11 and ISO 16063-21
For shock impulse widths of 0.1 ms to 5 ms and amplitude range of 200 m/s/s to 5,000 m/s/s in accordance with ISO 16063-13 and ISO 16063-22

With Calibration and Measurement Capability of -

Magnitude:
0.4% of reading from 0.5 Hz to below 5 kHz
0.5% of reading from 5 kHz to below 6.3 kHz
0.6% of reading from 6.3 kHz to 10 kHz
Phase:
0.7° from 0.5 Hz to below 630 Hz
0.8° from 630 Hz to below 2.5 kHz
0.9° from 2.5 kHz to below 5 kHz
1.2° from 5 kHz to 10 kHz
In the acceleration range (or equivalent) 0.01 m/s2 up to 10 m/s2 below 10 Hz, up to 50 m/s2 from 10 Hz, up to 100 m/s2 from 40 Hz, up to 1000 m/s2 from 160 Hz, and up to 5000 m/s2 at approximately 650 Hz

Absolute Calibration and verification of shock measuring systems which include
accelerometers by interferometry
with calibration and measurement capability of -
Magnitude:
0.5 % of reading from 200 m/s/s to 5,000 m/s/s
Calibration and verification of shock measuring systems which include accelerometers by comparison with reference transducer
with calibration and measurement capability of -
Magnitude:
0.7 % of reading from 200 m/s/s to 5,000 m/s/s
Artificial mastoids Force sensitivity; Phase sensitivity; Velocity sensitivity Comparison with a reference standard; Direct measurement by electrical input

IEC 60318-6

Capability

with calibration and measurement capability of -

For mechanical impedance level, and force sensitivity level
Impedance magnitude:
0.4 dB re 1 N/(m∙s-1) from 125 Hz to 4 kHz
0.5 dB re 1 N/(m∙s-1) from above 4 kHz to 8 kHz
Impedance phase sensitivity:
0.7º for phase angle at 250 Hz
Force sensitivity:
0.4 dB re 1 V/N from 125 Hz to 1.5 kHz
0.5 dB re 1 V/N from above 1.5 kHz to 8 kHz
Artificial mastoids; Mechanical impedance transducers Acceleration sensitivity; Force sensitivity; Phase sensitivity Comparison with a reference standard; Direct measurement by electrical input

Capability

Calibration by interferometry of mechanical impedance transducers, including impedance heads for artificial mastoids, within the acceleration range 10 m/s2 and 100 m/s2 and forces up to 3 N
with calibration and measurement capability of -
Acceleration sensitivity:
0.3% of reading from 80 Hz to below 5 kHz
0.4% of reading from 5 kHz to below 6.3 kHz
0.5% of reading from 6.3 kHz to 8 kHz
Dynamic force sensitivity:
0.5% of reading from 80 Hz to below 5 kHz
0.7% of reading from 5 kHz to 8 kHz
Phase:
0.5º from 80 Hz to below 5 kHz
1º from 5 kHz to 8 kHz
Charge amplifiers; Machine condition monitoring equipment; Signal conditioners; Vibration analysers; Vibration filters; Vibration measuring systems Electrical response Direct measurement by electrical input

Capability

Calibration by electrical signal input
with calibration and measurement capability of -
Magnitude:

0.1% of voltage or (0.05% + 10 μV), whichever is greater in the frequency range DC to 20 kHz and 100 μVpk to 70 Vpk
Phase:
0.5° from DC to below 5 kHz
1° from 5 kHz to 20 kHz
Geophones Acceleration sensitivity; Displacement sensitivity; Phase sensitivity; Velocity sensitivity Comparison measurement against reference transducer; Comparison with a reference standard

Capability

Geophones, seismometers and similar low-frequency transducers without external reference surfaces
with least calibration and measurement capability of -
Magnitude:
1% of reading for voltage sensitivity, current sensitivity, charge sensitivity or displayed units from 0.5 Hz to 250 Hz
Phase:
0.7° from 0.5 Hz to 250 Hz
Vibration metrology - Vibration standards and reference equipment Reference accelerometers Acceleration; Acceleration to voltage or charge sensitivity; Frequency Comparison measurement against reference transducer; Direct measurement by interferometer

by method ISO 16061-11

Capability

Absolute calibration of complex vibration amplitude sensitivity by interferometry from 0.5 Hz to 10 kHz by the methods of ISO 16063-11
Transducer response in voltage sensitivity, current sensitivity, charge sensitivity or displayed units
with calibration and measurement capability of -
Magnitude:
0.3% of reading from 0.5 Hz to below 9 kHz
0.5% of reading from 9 kHz to 10 kHz
Phase:
0.5° from 0.5 Hz to below 5 kHz
1° from 5 kHz to 10 kHz
In the acceleration range (or equivalent) 0.01 m/s2 up to 10 m/s2 below 10 Hz, up to 50 m/s2 from 10 Hz, up to 100 m/s2 from 40 Hz, up to 1000 m/s2 from 160 Hz, and up to 5000 m/s2 at approximately 650 Hz
Extended lower velocity range down to 1 mm/s from 0.5 Hz to below 2 Hz
Vibration transducers of mass up to 5000 grams for frequencies of 6 kHz and below, and up to 100 grams for frequencies of 10 kHz and below
by comparison to the methods of ISO 16063-21
with calibration and measurement capability of -
Magnitude:
0.4% of reading from 0.5 Hz to below 5 kHz
0.5% of reading from 5 kHz to below 6.3 kHz
0.6% of reading from 6.3 kHz to 10 kHz
Phase:
0.7° from 0.5 Hz to below 630 Hz
0.8° from 630 Hz to below 2.5 kHz
0.9° from 2.5 kHz to below 5 kHz
1.2° from 5 kHz to 10 kHz
In the acceleration range (or equivalent) 0.01 m/s2 up to 10 m/s2 below 10 Hz, up to 50 m/s2 from 10 Hz, up to 100 m/s2 from 40 Hz, up to 1000 m/s2 from 160 Hz, and up to 5000 m/s2 at approximately 650 Hz

Very low frequency calibration with an acceleration of up to 9.8 m/s2
with least uncertainties of measurement of -
0.2% of reading at zero Hertz (DC)
0.2% of reading from 0.01 Hz to below 5 Hz
0.3% of reading from 5 Hz to below 10 Hz
0.4% of reading at 10 Hz
Vibration calibrators Acceleration; Frequency Comparison measurement against reference transducer

Capability

Calibration of vibration calibrators, shakers and exciters for vibration amplitude and frequency
with least calibration and measurement capability of -
Magnitude:
0.4% of reading from 0.5 Hz to below 5 kHz
0.5% of reading from 5 kHz to below 6.3 kHz
0.6% of reading from 6.3 kHz to 10 kHz
Frequency:
0.01 Hz from 0.5 Hz to 10 kHz

The only data displayed is that deemed relevant and necessary for the clear description of the activities and services covered by the scope of accreditation.

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