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
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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
1,273
Accredited labs
15
Countries
Showing 251–275 of 1,273 labs
DIANOVIS
Active
Kleines Blutbild (maschinell)
Differentialblutbild (maschinell)
Thrombozyten
Retikulozyten
Natriumchlorid
+ 3 more
Gleichspannung 10 mV
Quellen > 100 mV
> 1 V
> 10 V
> 100 V
+ 3 more
ASTM C 1166
IEC 60512-16-7
ID168
IEC 60512-16-9
AK gegen Sc1-70
+ 3 more
DIPE ELECTRÓNICA
Active
0 mV U < 330 mV 330 mV U < 3,3 V 3,3
0 mV U < 120 mV 120 mV U < 1,2 V 1,2
0 A I 330 A 330 A < I 3,3 mA 3,
20 A I 1025 A
20 A I 1025 A F = 50 Hz
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SM 5210 D
UNE-EN ISO 27888
SM 5220 D
SM 2130 B
UNE-EN ISO 11885
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DKMS Life Science Lab g
Active
Antikörper FILA-Klasse I
Lymphozytäre Kreuzprobe
E, -DRB1, -DQB1, -DPB1, DRB3/4/5, -DQA1,
KIR
MICA, MICB, CCR5832
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HLA-Typsierung (HLA-B*27)
Azoospermiefaktor
(AZFa/AZFb/AZFc)
Chorea Huntington (HTT)
OMIM# 143100
+ 3 more
DNKA
Active
staining based on HSG 248.
(PCM) based on HSG 248
(HSG 248) – 2021
QSOP 03 based on HSG 248
QSOP 01 based on HSG 248
DNV Energy Systems Germany
Active
− Stromstärkeverhältnis
- Gleichspannung
/ Messgeräte
- Wechselspannung
Gleichstromstärke > 100 µA
+ 3 more
Faktor-V-Mangel (F5 inklusive
Thrombozyten, PAC-1 Bindung
CASQ2, KCNJ2, CALM2, CALM3, TECRL )
dbSNP r6027 )
Kardiomyopathie (PKP2, DSG2, SCN5A )
+ 3 more
aller Untersuchungsverfahren im flexible
Webpräsenz des Medizinischen Laboratoriu
(VWF:CB)
vWF-Multimere
Erythrozyten
+ 3 more
CD34+ Stammzellen
Erythrozyten
Hämoglobin
Leukozyten
Bakterien- und Hefezellen
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Akkreditierungsbereich. Die Liste ist
Erythrozyten
Leukozyten
Hämatokrit
Thrombozyten
+ 3 more
AB0-System
Isoagglutinine
(Serumeigenschaften)
Rh-Merkmal D
Rh-Untergruppen
+ 3 more
(Serumeigenschaften)
Dithiothreithol-Behandlung
Absorption oder Elution
HNA (1a, 1b, 1c, 2a, 3a, Antikörperscree
Liquorzelldifferenzierung
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DSA Daten- und Systemtechnik
Active
am Standort DSA Daten- und Systemtechnik
Schreibendes
Bremsmessgerät
(HU-Adapter)
Beschleunigung
+ 1 more
50 ∙ 10-9 mol/mol ≤ C ≤ 237 · 10-9 mol/m
30∙ 10-9 mol/mol ≤ C ≤ 500 ∙ 10-9 mol/mo
50 ∙ 10-9 mol/mol ≤ C ≤ 1000 · 10-9 mol/
50 ∙ 10-9 mol/mol ≤ C ≤ 237∙ 10-9 mol/mo
0,5 ∙ 10-9 mol/mol ≤ C ≤ 15 ∙ 10-9 mol/m
+ 1 more
ASTM D 3227
DIN 3500
EN 14350-2
DIN EN 12350-9
DIN 53512
+ 3 more
(SPG42), SPAST (SPG4), SPG11, SPG7, VAMP
DIN EN 30-1-1
DIN EN 30-1-2
DIN 13013
DIN 13014
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Decus Research
Active
1) MS08P based on BS EN ISO
MS02P based on BS EN ISO
MS03P based on BS EN ISO
MS06P based on BS EN ISO
MF07P based on BS EN ISO
+ 3 more
Metrologic Group GmbH, nalen von:
Wernau, D
Neuss, D ≤ 1515 mm
Wetzlar, D
S.p.A., Turin, I
+ 3 more
ETSI EN 319 412
ETSI EN 319 401
ETSI EN 319 411-2
ETSI EN 319 411-1
DIN EN 60950-1
EN IEC 62368-1
DIN EN 60204-1
DIN EN 60825-1
DIN EN 61010-1
+ 3 more
IEC 60335-1: 2010
IEC 60335-2-29
DIN EN 60335-2-29
IEC 60335-2-65
DIN EN 60335-2-65
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