Find the most up-to-date version of IEC at Engineering Originally this standard was called IEC , but was renamed IEC Grades in order of accuracy: Type 1, Type 2. IEC , Sound Level Meters. Purchase your copy of BS EN , IEC as a PDF download or hard copy directly from the official BSI Shop. All BSI British.
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Describes instruments for the measurement of frequency weighted and time averaged sound-pressure levels. Ensures specified accuracy and stability of an integrating sound level meter and reduces to the practical minimum any differences in equivalent measur.
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English French Written by: Integrating-averaging sound level meters Article no: Particular requirements for the basic safety and essential performance of hearing instruments and hearing instrument systems.
SS-EN Requirements for the declaration of the acoustic output of medical diagnostic ultrasonic equipment. Report error on page.