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
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Thyreoidea stimulierendes
(TSH)
17-α-OH-Progesteron
(17-OH-P)
Immunreaktives Trypsin
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Liquid-in-glass thermometers
ASTM D4052 (Digital density
CheckImmune
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Leukozytenzahl
B-Zellzahl (Immunstatus
Rezeptor-Besatz
HLA-DR
Leukozytensubpopulationen
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DIN 38402-A 13
DIN ISO 5667-5 (A 14)
DIN 38402-A 30
DIN 19643-1
ISO 5667-11
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Cirrus Research
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Sound Calibrators
Sound Level Meters
One-third octave band filters
(HSG 248) – 2021
SRV-002 based on HSG 248
(PCM) based on HSG 248
CoMech Metrology
Active
Chronic progressive external
Depth
Internal
Dial gauges and dial test
Caliper
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Coesfeld
Active
Kraft (WPM)
Belastungseinrichtungen von
Werkstoffprüfmaschinen
Länge (WPM) 0,5 mm
messeinrichtungen von
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simulation.
parameters and ranges)
digital and analogue
Compli Group
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DC CURRENT
DC Resistance
Oscilloscope Calibration
DC VOLTAGE
CAPACITANCE
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Messgeräte 0,001 V
> 0,22 V
> 2,2 V
> 11 V
> 22 V
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BS EN ISO 16283-1:2014+A1:2017BS EN ISO
BS EN ISO 16283-2:2020
HTM 08-01 - 2013
BS EN ISO 140-4:1998
BS EN ISO 717-2:2020
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DIN EN 933-11
DIN EN 12390-3
DIN EN 933-3
DIN EN 12390-7
DIN EN 12697-5
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DC CURRENT
LENGTH
DC Resistance
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Cold junction compensation
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Chloride
Potassium
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Differential Blood Count
White Blood Cell Count
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Corserv Solutions
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DIN EN 933-1
(PCM) based on HSG 248
(HSG 248) – 2021
DIN EN 932-1
DIN EN 932-2
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