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Information × Registration Number 0200U004714, 0100U004894 , R & D reports Title The construction, production, research and verification of the apparatus complex of the national primary standard of the sound pressure unit in air media in frequency range from 2 Hz to 100 kHz popup.stage_title Head Kosterov Anatolij Oleksijovych, Registration Date 31-10-2000 Organization State scientific-research institute of metrology of measuring and control systems popup.description2 National primary standard was constructed, produced and put into operation. It reproduce, conserve and transfere of sound pressure unit in frequency range from 2 Hz to 100 kHz and acoustical pressure range from 0,05 to 80 Pa with experimental standard deviation of the mean from 0,03 to 0,3dB and systematic error from 0,05 to 0,3 dB. Nonstability of the national standard is 0,0025 per year Product Description popup.authors popup.nrat_date 2020-04-03 Close