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Hand of Environmental officer holding to use sound level meter for monitor is part of the prevention of environmental impacts at Chemical plant area or refinery factory.
Decibel measurement. Gauge with green needle pointing 30 dB, concept of noise reduction
Measuring industrial noise, or sound levels that are safe for humans, is categorized into loudness levels and exemplifies activities from silent to loud. Decibel or dB unit noise concept
Pollution is too loud.hand holding a digital sound level on a white background,Sound level meters are commonly used in noise pollution studies.
Environmental officer setting sound level meter for monitor is part of the prevention of environmental impacts at factory.

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