Scope
ISO 3381:2013 / EN ISO 3381
Railway Interior Noise Measurement
ISO 3381 specifies standardized measurement procedures for determining sound pressure levels inside railbound passenger and freight vehicles under operating conditions. This test assesses passenger comfort, crew exposure, and compliance with occupational and environmental noise limits within train cabins and compartments. Manufacturers, operators, and occupational health consultants use these measurements to evaluate cabin acoustic quality, design noise control improvements, and ensure regulatory compliance. Accreditation guarantees consistent, defensible interior noise assessments that support both passenger safety and worker health protection.
What it measures
- A-weighted sound pressure level inside vehicle (dB(A))
- Noise levels at driver/operator positions
- Frequency analysis of interior noise (1/3 octave bands)
- Sound exposure level during typical operation
- Noise at passenger seating areas
🇩🇪
DIN EN ISO 3095
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BS EN ISO 3095
🇫🇷
NF EN ISO 3095
🇮🇹
UNI EN ISO 3095
🇪🇸
UNE EN ISO 3095
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NEN EN ISO 3095
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DIN EN ISO 14837-1
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BS EN ISO 14837-1
🇫🇷
NF EN ISO 14837-1
🇮🇹
UNI EN ISO 14837-1
🇪🇸
UNE EN ISO 14837-1
🇳🇱
NEN EN ISO 14837-1
1,516
Accredited labs
17
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Showing 226–250 of 799 labs
HbA1c
Eosinophile, Basophile, MCV, MCH)
Retikulozyten
Urinsediment
Elektrolyte (Kalium, Natrium, Chlorid)
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Plasma, Serum, Plasma 0,5 mmol/L
Plasma, Serum, Plasma 50 mmol/L
Plasma, Serum, Plasma
Material
Urin
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IEC 62271-1: 2017-07
DIN EN 62271-1
VDE 0671-1
IEC 62271-100: 2021
VDE 0671-100
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DIN EN 1230-1
EN 1230-2
DIN 10955
DIN ISO 8784-1
DIN 54378
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ISO 6508-1
Charpy impact test (ISO 148-1)
Tensile testing of metallic materials (I
BS EN ISO 9015-2
BS EN ISO 9016:2022
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- Gleichstromwiderstand
/ Messgeräte
Quellen
>100 Ω
> 10 kΩ
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Ingenieurbüro g o e b e l
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DIN 56912
DIN EN 12198-1
DIN EN 12198-2
DIN EN 12198-3
DIN EN 60825-1
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Taupunkttemperatur
Railway braking — urban guided transport
Railway vehicle body structural requirem
Railway bogies — wheelsets and bogies st
Elektrische
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DIN 38402-A 12
DIN ISO 5667-5 (A 14)
DIN EN ISO 5667-6 (A 15)
DIN EN ISO 19458 (K 19)
DIN 19643-1
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Basophile Granulozyten
Eosinophile Granulozyten
Erythrozyten
Lymphozyten
Leukozyten
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DIN EN ISO 1460
DIN EN ISO 2178
DIN EN ISO 2360
DIN 50905-1
DIN 50905-2
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Bacillus anthracis Antikörper
Direkter Coombstest polyvalent
Brucella spp. IgG, IgM Antikörper
Francisella tularensis-Antikörper
polyvalent, IgG, IgM
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Kurzschlussstrom 0,5 mA
0,1 V
Füllfaktor Solarzellen* 25 %
0,01 mW
THD U 0,1 %
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Erythrozyten im 1,5.10121-1
DIN EN ISO 10121-2
DIN EN ISO 16890-1
DIN EN ISO 16890-2
DIN EN ISO 16890-3
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DIN EN IEC 60255-1
VDE 0435-300
DIN EN 60255-151
VDE 0435-3151
IEC 60255-151
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Intertek Caleb Brett GERMANY
Active
DIN EN ISO 12185
ASTM D 4052
DIN EN ISO 3405
ASTM D 86
DIN EN 13016-1
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Intertek Consumer Goods
Active
IEC 62321-2
DIN EN 61340-4-4
DIN EN 12472
DIN EN 16711-1
DIN EN 1264-5
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Intertek Deutschland
Active
IEC 61000-3-2: 2014
IEC 61000-3-3
IEC 61000-3-11: 2017
IEC 61000-3-12: 2011
IEC 61000-4-2: 2008
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Isserstedt Prüfmaschinen
Active
Härte* 20 HRA
Härtevergleichsplatten
20 HRB
20 HRC
40 HRD
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Charpy impact test (ISO 148-1)
Salt spray / neutral salt fog test (ISO
elektronische Waagen
Innen- und Tiefenmaße
Konventioneller
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Ebenheitsabweichung
verkörperungen z.B.
platten nach DIN 876:1984
Geradheitsabweichung
ebener Flächen, z.B.
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Johs. Boss
Active
(ein- und mehrgängige
winde mit geradlinigen
unsymmetrischem Profil
0,5 mm bis 6 mm)
Außengewinde Nenndurchmesser
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Obligat anaerobe Bakterien
mikroaerophile Bakterien
ESBL-Bildner
(multiresistente gramnegative
säurefeste Stäbchen
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CD45 Percp+CD16+56+CD3
CD4
CD45 Percp+CD4+CD8
Adalimumab
Anti-Adalimumab Antikörper
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No matching labs found.