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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ISO 9613-2
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Hochspannung - Wechselspannung Bereiche Rechteckspannung Amplitudenparameter + 3 more
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− Durchmesser − Parallelendmaße − Formabweichung − Strichmaße, Abstände − Virtuelle Koordinatenmessgeräte + 3 more
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DIN 19698-1 DIN 19698-2 DIN ISO 11464 DIN EN ISO 54321 DIN EN 12457-4 + 3 more
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DAkkS D-K-15055-01-01 Hanau, DE
- Gleichspannung / Messgeräte > 0 V > 0,22 V > 2,2 V + 3 more
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Positiver und negativer Positiver Überdruck p e 1) In den CMC sind die erweiterten Messu
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DAkkS D-K-21115-01-00 Zwickau, DE
Industrielle Messtechnik ≤ 860 mm GmbH, Oberkochen, D
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iLF Magdeburg

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DAkkS D-PL-18869-01-01 Magdeburg, DE
DIN EN ISO 9117-3 DIN EN ISO 9117-5 DIN EN ISO 1463 DIN EN ISO 2808 DIN EN ISO 2178 + 3 more
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DAkkS D-K-17060-01-00 Tettnang, DE
Taupunkttemperatur –0,91 bar bis Positiver und negativer Überdruck p *) (ein- oder mehrgängige + 3 more
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ift Rosenheim

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DAkkS D-PL-11349-01-01 Rosenheim, DE
ASTM E 330/E 330M ASTM E 283/E283M DIN 4103-1 DIN 68706-1 UNE-EN 12211 + 3 more
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DAkkS D-K-15219-01-02 Helmstadt, DE
Taupunkttemperatur fixpunktzellen Railway braking — urban guided transport Railway vehicle body structural requirem SPRT-Sensor + 3 more
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Absolutdruck p abs > 0,8 bar > 1,2 bar > 20 bar + 3 more
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DAkkS D-K-21204-01-00 Hofheim am Taunus, DE
Taupunkttemperatur direktanzeigende −45 °C Railway vehicle body structural requirem Widerstandssensor direktanzeigende > 200 °C + 3 more
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Großes Blutbild TSH Immunglobulin E 25-OH-Vitamin D Vitamin B12 + 3 more
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DAkkS D-K-22604-01-01 Neumünster, DE
Kraft (WPM) Vibration measuring instruments — test m Werkstoffprüfmaschinen Acoustics — tonality assessment (DIN 456 Measurement of traffic noise immissions + 3 more
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DAkkS D-ML-13067-01-00 Berlin, DE
Basophile Eosinophile Erythrozyten Hämatokrit Leukozyten (Zellzahl) + 3 more
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DAkkS D-K-21619-01-00 Leer, DE
Durchflussmess- 13 m³/h - Hochspannungsmessgrößen > 25 m³/h Volumendurchfluss > 40 m³/h + 3 more
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DAkkS D-K-22590-02-01 Hamburg, DE
nichtselbsttätige elektronische Waagen − Waagen
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DAkkS D-PL-12064-01-01 Bonn, DE
DIN EN 55016-1-4 VDE 0877-16-1-4 DIN EN 55016-2-1 VDE 0877-16-2-1 DIN EN 55016-2-2 + 3 more
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DAkkS D-ML-13149-01-00 München, DE
Blutungszeit 5-Hydroxyindolessigsäure Aminosäuren Carbohydrate-Deficient-Transferrin Everolimus + 3 more
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DAkkS D-K-15210-01-00 München, DE
Gleichspannung 0,01 V Messgeräte 0,33 V 3,3 V 330 V Gleichstromstärke 30 µA + 3 more
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tecsis

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DAkkS D-K-17205-01-00 Offenbach am Main, DE
Kraft 50 N Kraftaufnehmer und 0,25 kN Kraftmessgeräte 0,5 kN 0,2 kN 1 kN + 2 more
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DAkkS D-PL-21341-01-00 Bremerhaven, DE
DIN 45645-2
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Industries

Manufacturing and industrial production Construction and heavy equipment operation Mining and quarrying operations Transportation and logistics Entertainment and live event production

Related Standards

  • 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

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