Acoustic calibration systems

Characteristics

GRAS 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 GRAS over the years have accumulated, GRAS 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 GRAS 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 GRAS partner, to discuss the options that are offered in your area.

GRAS is one of the World’s largest manufacturers of measurement microphones and precision acoustical products. Since 1994, 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, GRAS’ management have proven their dedication to constantly innovating the acoustical industry through their work on various standardisation comities.