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National Measurement Institute

Accreditation_No: 1
Acoustics, Ultrasonics and Vibration Project, Lindfield
www.measurement.gov.au

Contact: Mrs Darien Northcote
Mobile: 0421 890 282
Phone: (02) 8467 3574
Fax: (02) 8467 3719
Email: darien.northcote@measurement.gov.au

Address: Bradfield Road, WEST LINDFIELD NSW 2070

Facilities: Conditionally available for public testing
Last Modified: 23-JUL-10

This facility complies with the requirements of ISO/IEC 17025:2005

View detailed Scope Measurements to the methods documented in the AUV Project Operations Manual with ranges and least uncertainties as specified below 1.90 Acoustic measuring and calibration equipment .01 Microphones Pressure sensitivity by modified reciprocity method at 250 Hz, 500 Hz or 1 kHz with least uncertainties of measurement of 0.04 dB for microphone classes: LS1, LS2, WS1 and WS2. Pressure sensitivity by reciprocity method according to IEC 61094-2 between 20 Hz and 10 kHz for LS1 microphones with least uncertainties of measurement of - 0.1 dB from 20 Hz to 25 Hz 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 least uncertainties of measurement 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 Free Field response by substitution over the frequency range 31.5 Hz to 20 kHz (in octave and third octave bands) with least uncertainties of measurement of - 0.14 dB from 31.5 Hz to below 40 Hz 0.11 dB from 40 Hz to below 63 Hz 0.10 dB from 63 Hz to below 125 Hz 0.08 dB from 125 Hz to below 160 Hz 0.07 dB from 160 Hz to 3.15 kHz 0.08 dB from above 3.15 kHz to 4 kHz 0.09 dB from above 4 kHz to 6.3 kHz 0.13 dB from above 6.3 kHz to 16 kHz 0.14 dB from above 16 kHz to 20 kHz Frequency response by electrostatic actuator method over the frequency range 20 Hz to 20 kHz with least uncertainties of measurement 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 least uncertainties of measurement of - 0.4 dB from 1 Hz to 200 Hz 1.0 dB from above 200 Hz to 250 Hz Pressure sensitivity of LS2 and WS2 type microphones by comparison using an active coupler in the frequency range 20 Hz to 25 kHz with least uncertainties of measurement 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 least uncertainties of measurement 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 .02 Sound level meters by the methods of - IEC 61672-3, AS 1259.1 and AS 1259.2 - 1990, IEC 651, IEC 804 and similar standards with least uncertainties of measurement of - Electrical tests 0.08 dB electrical tests, Acoustic tests, 0.14 dB for frequencies 31.5 Hz to below 63 Hz 0.10 dB for frequencies from 63 Hz to below 6.3 kHz 0.13 dB for frequencies from 6.3 kHz to below 16 kHz 0.14 dB for frequencies from 16 kHz to 20 kHz .04 Band pass filters by the methods of - AS/NZS 4476, IEC 1260 with least uncertainties of measurement 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 .05 Acoustic calibrators by the method of - IEC 60942 with least uncertainties of measurement of - 0.06 dB for single frequency acoustic calibrators or pistonphones For a multi frequency calibrator: 0.09 dB at 31.5 Hz 0.08 dB at 63 Hz 0.07 dB from 125 Hz to 2 kHz 0.08 dB at 4 kHz 0.09 dB at 8 kHz 0.15 dB at 12.5 kHz 0.23 dB at 16 kHz .99 Other acoustic measuring equipment Stepped 600 Ω resistive attenuators with least uncertainties of measurement 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 0.011 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 1.91 Vibration measuring and calibrating equipment [Suspended] .01 Vibration transducers Absolute acceleration calibration by interferometry from 1 Hz to 10 kHz by the methods of ISO 16063-11 Voltage sensitivity or charge sensitivity with least uncertainties of measurement of - 0.5% from 1 Hz to below 20 Hz 0.4% from 20 Hz to below 63 Hz 0.3% from 63 Hz to below 5 kHz 0.4% from 5 kHz to below 6.3 kHz 0.5% from 6.3 kHz to 10 kHz Accelerometers of mass up to 1000 grams by comparison to the methods of ISO 16063-21 with least uncertainties of measurement of - 0.5% for voltage sensitivity or charge sensitivity in the frequency range 20 Hz to 10 kHz and acceleration from 10 m/s² to 980 m/s² High acceleration calibration with least uncertainties of measurement of - 0.5% for voltage sensitivity or charge sensitivity at accelerations up to 5000 m/s² at approximately 650 Hz Low frequency acceleration calibration with least uncertainties of measurement of - 0.5% for voltage sensitivity or charge sensitivity from 0.5 Hz to 100 Hz Velocity transducers with least uncertainties of measurement of - 0.5% for voltage sensitivity at frequencies from 1 Hz to 250 Hz and velocities from 1 mm/s to 80 mm/s Geophone elements and triaxial geophones with least uncertainties of measurement of - 1% for voltage sensitivity at frequencies from 2.5 Hz to 250 Hz Very low frequency calibration with an acceleration of 10 m/s² at frequencies down to 0.05 Hz and at zero hertz with least uncertainties of measurement of 0.5% .02 Vibration measuring systems Calibration by electrical signal input with least uncertainties of measurement of - 0.1% .03 Vibration analysers Calibration by electrical signal input with least uncertainties of measurement of - 0.1% .04 Vibration filters Calibration by electrical signal input with least uncertainties of measurement of - 0.1% Calibration by electrical input .05 Vibration recording systems Calibration by electrical signal input with least uncertainties of measurement of - 0.1% .06 Vibration calibrators Calibration of portable vibration exciters with least uncertainties of measurement of - 0.5% for output acceleration .99 Other vibration measuring equipment Charge amplifiers - determination of transfer function with least uncertainties of measurement of - 0.2% for mV/pC Determination of time constant of acceleration measuring system for piezoelectric accelerometers Calibration and verification of shock measuring systems which include accelerometers, for compliance to requirements of SAEj211b, SAE j211/1 and ISO 6487 channel frequency class 60 Hz, 180 Hz, 600 Hz or 1000 Hz