Acoustic calibration systems

Acoustic calibration systems

Characteristics

  • Audiometer calibration
  • Standardised precision couplers
  • Complete audiometer system
  • Client specific solutions available – depending on your type of headset

G.R.A.S. has always manufactured high-quality measurement microphones. Over the years this has been accompanied by a complete range of standardised acoustical couplers and ear simulators.

Through this extensive coupler programme and the knowhow that G.R.A.S. over the years have accumulated, G.R.A.S. is able to offer you a state of the art audiometer calibration system. The system was build in collaboration with one of Germany’s most respected audiometer calibration companies, and is perfect for on-site audiometer calibration.

With very little set up time, you will be able to read off your measurements on one screen, allowing you to quickly and precisely calibrate the audiometer – and optional configuration also includes software and RS-232 cables for readout into your laptop, for professional reports.

Couplers and microphones are made in stainless steel, making this system extremely rugged – perfect for on the road use. The system platform is build modularly, allowing you to switch back and forth between coupler set ups, using the same platform and preamplifier.

Calibration

All G.R.A.S. products are tested thoroughly before being shipped from Denmark. Our calibration data are traceable to some of the World’s largest laboratories: NPL, PTB & NIST. All calibrations are done individually and reported on calibration charts that document the precision of the microphone.

If you require accredited calibration, please contact your local G.R.A.S. partner, to discuss the options that are offered in your area.

G.R.A.S. is one of the World’s largest manufacturers of measurement microphones and precision acoustical products. For more than 15 years we have developed innovative solutions that are now being used in research & development, quality assurance and monitoring departments worldwide. With more than 80 years of combined experience in the industry, G.R.A.S.’ management have proven their dedication to constantly innovating the acoustical industry through their work on various standardisation comities.

  1. 90AA Audiometer Calibration System
    Freq range:
    ANSI: S.1.40, S.1.43, S.1.11, S.3.6
    IEC: 60318-1 & -2

    G.R.A.S. 90AA Audiometer Calibration System

    The G.R.A.S. 90AA Audiometer Calibration System is easy and fast to set up and control and can be upgraded as your calibration needs change. From quick measuring of frequencies and test signal levels to harmonic distortion and representation of the values in one table together with the third octave band spectrum.

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  2. 90AB Basic Audiometer Calibration Sys
    Freq range:
    ANSI: S.1.40, S.1.43, S.1.11, S.3.6
    IEC: 60318-1 & -2

    G.R.A.S. 90AB Basic Audiometer Calibration System

    The G.R.A.S. Audiometer Calibration Systems are configured to meet the requirements of modern audiometer calibration. They are easy and fast to set up and control, and can be upgraded as your calibration needs change.

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  3. 90CA Microphone Calibration System
    Freq range:
    ANSI: S.1.10
    IEC: 60318-1 & -2

    G.R.A.S. 90CA Microphone Calibration System

    The G.R.A.S. 90CA Microphone CalibrationSystem provides for automated and reliable level and frequency response calibration of measurement microphones. The implemented calibration methods conform with relevant standards as listed in the specifications.

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  4. 90CA-S2 Microphone Calibration System, PXI

    G.R.A.S. 90CA-S2 Microphone Calibration System, PXI

    The G.R.A.S. 90CA Microphone Calibration System provides for automated and reliable frequency response calibration of measurement microphones. The implemented calibration methods conform with relevant standards as listed in the specifications.

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