Scope
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
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DIN EN ISO 4871
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BS EN ISO 4871
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NF EN ISO 4871
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UNI EN ISO 4871
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UNE EN ISO 4871
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NEN EN ISO 4871
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DIN EN ISO 11201
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BS EN ISO 11201
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NF EN ISO 11201
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UNI EN ISO 11201
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UNE EN ISO 11201
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NEN EN ISO 11201
1,670
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1A CAL
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Josephson-Josephson
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cartridges, based on HTM 2030
9.201 to 9.212 and BS EN ISO
35 °C/3 days based on HTM 2030
section 9.201 to 9.212, BS EN
ISO 15883-1:2009 6.4.2.3 and
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3-Rath Kalibrier+Prüftechnik
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Sound intensity — scanning method (ISO 9
Härteprüfmaschinen
Knoop- und
70 HR15N
42 HR30N
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Münchingen, D
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Holos, Software von Carl
Metrologic, Software
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(HSG 248) – 2021
E203 based on HSG 248
(PCM) based on HSG 248
E200 based on HSG 248
E201 based ISO 14966:2019 using
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Laterale Größe von
Tiefenmaß/
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DIN ISO 1817
ISO 4045
DIN EN ISO 20347
ISO 17697
ISO 4643
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A.Q.C. SRL
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ASTM E 415 21
DIN EN 10164
DIN EN ISO 3651-1
ASTM A 262-15
ASTM G48-11
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Kraft 0,5 N
Zug- und Druckkraft
Vibration measuring instruments — requir
Sound power — in-situ using reference so
20 kN
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-95 kPa ≤ P < -1 kPa -1 kPa ≤ P < -100 P
5 kPa ≤ P < 80 kPa 80 kPa ≤ P ≤ 120 kPa
0 MPa ≤ P ≤ 2 MPa 2 MPa < P ≤ 20 MPa 20
Punto triple del agua (0,01 °C)
Punto de fusión del hielo (0,00 °C) -80
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A2L ENVIRONNEMENT
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NF X 43-269
NF X 43-264
DIN EN ISO 16017-2
NF X 43-257
NF X 43-267
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UNE-EN ISO 3744
UNE-EN ISO 3746
UNE-EN ISO 11200
UNE-EN ISO 11201
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UNE-EN ISO 16283-2
UNE-EN ISO 16283-1
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Absolutdruck p
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positiver Überdruck
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Überdruck p
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ABIT Ingenieure Trautmann
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DIN ISO 8297
DIN 45645-1
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ISO 11338-2
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BS EN ISO 16283-1:2014+A1:2017BS EN ISO
ISO 10052
BS EN ISO 16283-2:2020
DIN EN ISO 16283-3
DIN 4109-4
ABLE Calibration Services
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TEMPERATURE
PRESSURE
AC VOLTAGE (continued)
DC VOLTAGE
Generation only
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staining based on HSG 248
QP23 based on HSG 248
(PCM) based on HSG 248
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