BS EN 61252:1997

Заменен

Electroacoustics. Specifications for personal sound exposure meters — 26 стр.

Meters to measure sound exposure as the time integral of the square of the instantaneous A-frequency-weighted sound pressure.

Заменен на

BS EN 61252:1997+A2:2017

ICS

17.140.50 Electroacoustics. Including sound level meters / Электроакустика. Включая слуховые аппараты и шумомеры