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

🇩🇪 DIN EN ISO 389-7 🇬🇧 BS EN ISO 389-7 🇫🇷 NF EN ISO 389-7 🇮🇹 UNI EN ISO 389-7 🇪🇸 UNE EN ISO 389-7 🇳🇱 NEN EN ISO 389-7 🇩🇪 DIN EN ISO 226 🇬🇧 BS EN ISO 226 🇫🇷 NF EN ISO 226 🇮🇹 UNI EN ISO 226 🇪🇸 UNE EN ISO 226 🇳🇱 NEN EN ISO 226

1,670 Accredited labs

18 Countries

Showing 151–175 of 183 labs

RAYMOND BIESOLD, S.L. (Unipersonal)

ENAC LC10.264 Sant Martí Sarroca, ES

(2,2 ± 0,1) ⋅ 10-2 mol/mol (99,5 ± 0,5) (15 ± 5) ⋅ 10-6 mol/mol (100 ± 5) ⋅ 10-6 (7,5 ± 0,2) ⋅ 10-2 mol/mol (15 ± 0,5) ⋅

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RED ELÉCTRICA DE ESPAÑA, S.A. (Unipersonal)

ENAC LC10.120 Tres Cantos, ES

5 mV ≤ U ≤ 10 V 10 V < U ≤ 1000 V 45 Hz ≤ f ≤ 60 Hz 10 mV ≤ U ≤ 10 V 10 V 100 µA ≤ I ≤ 400 mA 400 mA < I ≤ 10 A 10 300 mA ≤ I ≤ 15 A 45 Hz ≤ f ≤ 60 Hz 100 µA ≤ I ≤ 400 mA 40 + 2 more

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ROVIRA EQUIPOS

ENAC LC10.178 Madrid, ES

CEM Ed

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S.E. CARBUROS METÁLICOS

ENAC LC10.069 Sant Celoni, ES

0,03 · 10-2 mol/mol  C < 0,3 · 10-2 mol 0,3 · 10-2 mol/mol  C  1,1 · 10-2 mol/ 1,1 · 10-2 mol/mol ≤ C < 26 · 10-2 mol/m 1,1 · 10-2 mol/mol ≤ C < 26 · 10-2 mol/m 9 · 10-6 mol/mol  C < 75 · 10-6 mol/mol + 3 more

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SAUERMANN IBERICA PUMPS AND INSTRUMENTS, S.L. (Unipersonal)

ENAC LC10.221 Terrassa, ES

(15 ± 1) ⋅ 10-6 mol/mol (1000 ± 50) ⋅ 10 (8 ± 0,5) ⋅ 10-2 mol/mol (1,4 ± 0,1) ⋅ 1 (3000 ± 150) ⋅ 10-6 mol/mol (9 ± 1) ⋅ 10 (80 ± 8) ⋅ 10-6 mol/mol (100 ± 8) ⋅ 10-6 mol/mol

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SEQUOPRO

ENAC LC10.166 Tres Cantos, ES

0,015 l/min ≤ Q ≤ 40 l/min 0,0 · 10-9 mol/mol 20 ⋅ 10-9 mol/mol ≤ C ≤ 500 ⋅ 10-9 mol/m 0,00 · 10-6 mol/mol 0,5 ⋅10-6 mol/mol ≤ C ≤ 10 ⋅10-6 mol/mol + 3 more

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SERVICIO DE MEDICIONES CANARIAS

ENAC LC10.216 Palmas de Gran Canaria, ES

1 mg 2 mg 5 mg 10 mg 20 mg 50 mg 100 mg 10 g 20 g 50 g 100 g 200 g 500 g 1 kg 2 .1 mg 2 mg 5 mg 10 mg 20 mg 50 mg 100 mg

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SAICA

ENAC LC10.191 Puerto de Santa María, ES

CEM DI-021 CEM DI-004 CEM EL-007 CEM DI-003 CEM DI-008 + 3 more

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SIMETRYCAL

ENAC LC10.192 Sevilla, ES

EURAMET CG-6 CEM DI-021 CEM DI-004 CEM DI-013 CEM DI-012 + 3 more

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SGS TECNOS, S.A. (Unipersonal)

ENAC LE011 Madrid, ES

DIN EN 61010-2-010: 2015 DIN EN 60335-2-9 IEC 61000-4-8: 2009 IEC 61010-2-010: 2014 DIN EN 61010-2-101 + 3 more

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SIGNIFY MANUFACTURING SPAIN, S.L. (Unipersonal)

ENAC LE1992 Valladolid, ES

UNE-EN 13032-1 UNE-EN 13032-4 UNE-EN 62722-2-1 IEC 62722-2-1 IEC 62717 + 1 more

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SILENS SERVICIOS Y TECNOLOGÍA ACÚSTICA

ENAC LE1591 Valencia, ES

UNE-EN ISO 16283-1 UNE-EN ISO 16283-3 UNE-EN ISO 16283-2

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SISTEMAS ATEQ ESPAÑA, S.A. (Unipersonal)

ENAC LC10.203 Zaragoza, ES

-95 kPa ≤ P < 0 kPa 0 kPa ≤ P ≤ 1 kPa 1 -95 kPa ≤ P ≤ -5 kPa - 5 kPa < P < -1 kP

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SISTEMAS ELECTRÓNICOS DE DETECCIÓN Y ANÁLISIS

ENAC LC10.210 Cornellà de Llobregat, ES

(5 ± 0,2) · 10-2 mol/mol (1000 ± 50) · 10-6 mol/mol (15 ± 2) · 10-6 mol/mol

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SISTEMAS TECNOLÓGICOS AVANZADOS

ENAC LE2749 Zaragoza, ES

UNE-EN 12341 0,015 l/min ≤ Q ≤ 50 l/min 20 ⋅ 10-9 mol/mol ≤ C ≤ 500 ⋅ 10-9 mol/m 20 ⋅10-9 mol/mol ≤ C ≤ 100 ⋅ 10-9 mol/mo 100 ⋅ 10-9 mol/mol ≤ C ≤ 1000 ⋅ 10-9 mol + 3 more

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