Scope
DIN 45680
Low-Frequency Noise Measurement and Assessment
DIN 45680 specifies procedures for measuring and evaluating low-frequency noise (typically 8 Hz to 160 Hz) immissions in buildings and indoor environments. Low-frequency noise from sources such as wind turbines, industrial equipment, traffic, and HVAC systems can cause annoyance and health effects even at sound pressure levels below conventional noise limits. The standard defines frequency-weighted assessment methods, measurement locations, and evaluation criteria specific to low-frequency phenomena. Accreditation for this test method enables laboratories to conduct specialized assessments required for wind energy projects, industrial operations, and building acoustics investigations in sensitive environments.
What it measures
- Sound pressure levels in the low-frequency range (8–160 Hz)
- Low-frequency weighted acceleration and vibration metrics
- Frequency content and tonal characteristics of low-frequency sources
- Indoor sound field distribution and room resonance effects
- Infrasound component presence and magnitude
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DIN EN ISO 389-7
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BS EN ISO 389-7
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NF EN ISO 389-7
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UNI EN ISO 389-7
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UNE EN ISO 389-7
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NEN EN ISO 389-7
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DIN EN ISO 226
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BS EN ISO 226
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NF EN ISO 226
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UNI EN ISO 226
🇪🇸
UNE EN ISO 226
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NEN EN ISO 226
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ESI Prüftechnik
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Sound intensity — scanning method (ISO 9
Härteprüfmaschinen
Kraft
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Vibration measuring instruments — test m
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ETAS
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Quellen und Messgeräte > 1 mV bis
> 10 mV bis
> 100 mV bis
> 10 V bis
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EXcorLab
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DIN EN ISO 1135-4
EN ISO 1135-5
DIN EN ISO 10993-1
DIN EN ISO 8637-1
DIN EN ISO 7199
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Eckert & Ziegler Nuclitec
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Aktivität
20 Bq
> 20 Bq
Spezifische Aktivität
radioaktiver Lösungen 20 Bq·g
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Elektro Struß
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Gleichspannung 30 mV
/ Messgeräte
> 0,33 V
> 3,3 V
> 33 V
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Elektro Wilhelm
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Taupunkttemperatur
für Widerstands- ˃ 500 °C
- Direktanzeigende Thermometer
Thermoelemente ˃ 500 °C
Widerstands- -50 °C
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Element Metech KDK
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Elektrische Messgrößen
Gleichstrom- und Niederfrequenzmessgröße
Railway brake — magnetic track brakes (U
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− Gleichstromstärke
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Elster
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Durchfluss von Gasen 0,5 m³/h
Volumendurchfluss
> 4 m³/h
Railway overhead lines — pantograph head
> 10 m³/h
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DIN EN ISO 14607
DIN EN 13687-2
DIN EN ISO 15912
ASTM E290-22
DIN EN ISO 19023
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Railway brake — magnetic track brakes (U
Railway brakes — conditions for homologa
− Durchfluss von Flüssigkeiten
Railway brakes — estimation of braking f
− Masse strömender Flüssigkeiten
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Endress+Hauser SE+
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IEC 61000-4-2: 2008
IEC 61000-4-3: 2006
IEC 61000-4-4: 2012
IEC 61000-4-5: 2005
IEC 61000-4-6: 2013
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CDC73
(NM_000384: c.1-c.82)
ID152
EN ISO 11925-2
DIN EN 350
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Innen- und Tiefenmaße
Konventioneller
0,11 G
> 2 G
> 5 g
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Thrombozytenfunktion
Agomelatin
Amisulprid (Psychopharmaka)
Amitriptylin (TZA)
Aripiprazol (Neuroleptika)
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Thrombozytenfunktion
Agomelatin
Amisulprid (Psychopharmaka)
Amitriptylin (TZA)
Aripiprazol (Neuroleptika)
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DIN EN 13141-4
DIN EN 13141-6
DIN EN 13141-7
DIN EN 13141-8
DIN EN 13141-11
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Glykohämoglobin A1C (HbA1c)
Basophile Granulozyten
Eosinophile Granulozyten
Erythrozytenverteilungsbreite
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Basophile Granulozyten
Basophile Granulozyten, Eosinophile Gran
Eosinophile Granulozyten, Erythrozyten,
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F.S. Fehrer Automotive
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DIN EN ISO 1798
DIN EN ISO 1856
Myopathie, Nemaline (TyP1, 3-10:
DIN EN ISO 14125
DIN EN ISO 179-1
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ISO 16750-3
DIN EN 60068-2-53
DIN EN 60068-2-64
ISO 20653
ISO 16750-4
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Frequenz
- Gleichspannung
Spannungsquellen 5 µV
1 mV
Messgeräte > 10 mV
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FILK Freiberg Institute g
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DIN ISO 48-4
ISO 21527-1
ISO 21527-2
DIN EN ISO 527-3
rs2066844
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