ISO 9612:2009

Occupational Noise Exposure Measurement

This standard specifies methods for measuring and assessing noise exposure of workers in occupational environments to determine compliance with exposure limits and identify hearing protection needs. The measurement protocols account for temporal variations in noise and worker movement to characterize daily noise exposure levels. Results are critical for occupational health and safety compliance, hearing loss prevention programs, and workplace risk assessment. Accredited laboratories ensure measurement uncertainty, calibration standards, and data interpretation meet regulatory requirements for legal and health-safety defensibility.

What it measures

Equivalent continuous A-weighted sound pressure level (Leq,8h)
Peak sound pressure levels and impulsive noise
Daily noise exposure level (LEX,8h)
Frequency-weighted noise exposure

🇩🇪 DIN EN ISO 4871 🇬🇧 BS EN ISO 4871 🇫🇷 NF EN ISO 4871 🇮🇹 UNI EN ISO 4871 🇪🇸 UNE EN ISO 4871 🇳🇱 NEN EN ISO 4871 🇩🇪 DIN EN ISO 11201 🇬🇧 BS EN ISO 11201 🇫🇷 NF EN ISO 11201 🇮🇹 UNI EN ISO 11201 🇪🇸 UNE EN ISO 11201 🇳🇱 NEN EN ISO 11201

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SDL Atlas

UKAS 0688 Shenzhen 518052, CN

Betriebsübertragungsmaß Crockmeters Pilling Tester (Box & Drum) Pilling Tester (Random) Burst Strength Tester + 3 more

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TÜV Rheinland Hong Kong

DAkkS D-PL-11180-01-01 Hong Kong, CN

DIN EN ISO 7971-3 DIN EN 16711-2 CD71 DIN EN ISO 717-1 DIN EN 1122 + 3 more

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ISO 4871 Acoustics — Declaration and verification of noise emission values of machinery and equipment
ISO 11201 Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions
IEC 61672-1 Electroacoustics — Sound level meters — Part 1: Specifications