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
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DIN EN ISO 3095
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BS EN ISO 3095
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NF EN ISO 3095
🇮🇹
UNI EN ISO 3095
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UNE EN ISO 3095
🇳🇱
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 651–675 of 1,273 labs
London Borough of Enfield
Active
staining based on HSG 248
(HSG 248) – 2021
(PCM) based on HSG 248
London Laboratories
Active
(HSG 248) – 2021
ASB04 based on HSG 248
(PCM) based on HSG 248
Lucion Services
Active
staining based on HSG 248
(HSG 248) – 2021
(PCM) based on HSG 248
3492, ISO14966 and HSG 248
DIN EN 14629
+ 3 more
Ludwig Schneider Messtechnik
Active
Taupunkttemperatur
Fixpunktzellen *)
thermometer (SPRT) *)
meter, direkt anzeigende
thermometer und
+ 3 more
Cryptococcus neoformans
Cardiolipin AK
Escherichia coli K1-AG
Haemophilus influenzae
Metromec Software AG
+ 3 more
M E Broadstone Limited
Active
Plain ring gauges (taper)
Plain gap gauges (parallel)
Plain plug gauges (taper)
LENGTH
ANGLE
+ 3 more
MBS
Active
DIN EN ISO 16484-5
DIN EN ISO 16484-6
IEC 62386-101
IEC 62386-102
IEC 62386-103
+ 3 more
MCV
Active
0,005 l/min ≤ Q ≤ 50 l/min
0,5 m3/h≤ Q ≤ 2,8 m3/h
0,6 m3/h Q 2,8 m3/h
20 m3/h Q 30 m3/h
30 m3/h < Q 70 m3/h
+ 3 more
DIN EN 13018
DIN EN 50289-1-2
DIN EN 50289-1-3
DIN EN 50289-1-4
DIN EN 50289-1-5
+ 3 more
MDI Limbach Berlin
Active
17-OH-Carbazepin
Amiodaron, Desmethylamiodaron
Amitriptylin
Clobazam
Clomipramin
+ 3 more
Temperaturmessgrößen
auch direktanzeigend 35 °C
direktanzeigende > 200 °C
auch direktanzeigend
Temperaturmessgrößen −35 °C
+ 3 more
METROCAL CALIBRACIÓN
Active
1 g 2 g 5 g 10 g 20 g 50 g 100 g 200 g 5
5 kg
10 kg 20 kg
100 kg 200 kg 500 kg 1000 kg
1 g 2 g 5 g 10 g 20 g 50 g 100 g 200 g 5
+ 2 more
METROPACK
Active
ISO 11607-1 ASTM F1886
BS EN ISO 11607-1:2020+A11
NF EN 868-5 annexe D
ASTM F88
DIN EN 12758
+ 3 more
DIN EN ISO 12945-2
DIN EN ISO 5403-1
DIN EN ISO 2060
DIN EN ISO 13937-1
DIN EN ISO 11642
+ 3 more
DIN EN 14511-2
DIN EN 14511-3
DIN EN 14511-4
DIN EN 14825
NF EN 16147
MK-Kalibrierlabor
Active
1350 mm
Innen- und Tiefenmaße *
> 300 mm
Tiefenmessschieber * 0 mm
Höhenmessschieber * 0 mm
+ 3 more
MLL MVZ
Active
Berliner-Blau-Reaktion
Naphthylacetat-Esterase
Pappenheim-Färbung
Peroxidase-Reaktion
Schnellfärbung (Diff-Quick)
+ 3 more
MP Calibration Services
Active
Plain plug gauges (parallel)
length bars)
LENGTH (continued)
Micrometers
(enzephalomyopathische Form
+ 3 more
DIN EN 50178: 1998
DIN EN ISO 2813
DIN EN ISO 4628-4
DIN EN ISO 10456
DIN EN ISO 12572
+ 3 more
MPA Kalibrierdienst
Active
Drehmoment * 0,2 N∙m
> 10 N∙m bis
Kalibriereinrichtungen
> 100 N∙m
Drehmomentschlüssel, 0,2 N∙m
+ 3 more
MS Laboratories
Active
on BS 4401:Part 3:1970(1986)
ISO 936:1998
BS ISO 21528-2:2017
BS ISO 16649-2:2001
ISO 6888-1
+ 3 more
No matching labs found.