SIST EN ISO 5135:2020 PDF

Name: SIST EN ISO 5135:2020 — Acoustics - Determination of sound power levels of noise from air-terminal devices, air-terminal units, dampers and valves by measurement in a reverberation test room (ISO 5135:2020)
SKU: SIST EN ISO 5135:2020
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Acoustics - Determination of sound power levels of noise from air-terminal devices, air-terminal units, dampers and valves by measurement in a reverberation test room (ISO 5135:2020)

Название (английский):

SIST EN ISO 5135:2020

Acoustics - Determination of sound power levels of noise from air-terminal devices, air-terminal units, dampers and valves by measurement in a reverberation test room (ISO 5135:2020)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 22
Дата публикации:: 5 октября 2020 г.
ICS:: 17.140.20
Технический комитет:: AKU - Acoustics

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Описание (английский):

This document establishes general rules for the acoustic testing of air-terminal devices, air-terminal units, dampers and valves used in air diffusion and air distribution systems in order to determine sound power levels as defined in ISO 3741.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN ISO 5135:2020 - Acoustics defines general rules for measuring sound power levels of noise from air-terminal devices, air-terminal units, dampers and valves in a reverberation test room. It is an EN-adopted version of ISO 5135:2020 and is intended for precision-grade acoustic testing referenced to ISO 3741. The standard covers test installations, measurement procedures, frequency bands and reporting requirements used to quantify HVAC noise for product development, certification and building-acoustics assessment.

Key topics and technical requirements

Scope and applicability

Applies to air diffusion and air distribution components (air outlets/inlets, terminal units, dampers, valves).
Equipment must operate under steady-state conditions and occupy no more than 5% of the reverberation room volume. If >2% up to 5%, the room must be qualified with the equipment present.

Test environment

Measurements are performed in a reverberation test room qualified per ISO 3741 for precision determination of sound power in octave or one-third-octave bands.
Positioning relative to reflecting planes matters (install representative of normal use; note the 1.0 m guidance for proximity to reflectors).

Frequency range

Typical octave-band mid-frequencies between 125 Hz and 8 000 Hz (optional down to 63 Hz); one-third-octave options also supported.

Installations and procedures

Specific mounting arrangements for radiation directly from equipment, via connecting ducts, and for casing-radiated noise are defined.
Referenced measurement methods and flow/pressure requirements draw on companion documents (e.g., ISO 7235, ISO 5167) and HVAC aerodynamic test standards.

Measurements, calculations and uncertainty

Measurement, calculation steps and a dedicated clause on measurement uncertainty ensure repeatability and traceability.

Reporting

Standard specifies test-report elements to document test conditions, installation, measured sound power levels and uncertainty.

Applications - who uses it and why

HVAC product manufacturers - to quantify and publish sound power levels for ducts, terminal devices, valves and units.

Acoustic test laboratories - for accredited, repeatable measurements in reverberation rooms.

Consulting engineers and building acousticians - to predict and control HVAC noise in buildings.

Certification bodies and regulators - to verify compliance with noise performance requirements and label data sheets. Practical uses include product development, noise optimization, regulatory compliance and inclusion of sound data in technical literature and tender documents.

Related standards

ISO 3741 (reverberation-room sound power precision methods)

ISO 7235 (ducted silencers and air-terminal units)

ISO 5167 (flow measurement)

ANSI/ASHRAE 70 & 130; EN 12238, EN 12239, EN 1751

Keywords: EN ISO 5135:2020, ISO 5135, reverberation test room, sound power level, HVAC noise, air-terminal devices, acoustic testing.

SIST EN ISO 5135:2020 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications - who uses it and why

Related standards

Технические детали

ISO 5135:2020

Acoustics — Determination of sound power levels of noise from air-terminal devices, air-terminal units, dampe…

BS EN ISO 3741:2010

Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure.…

SIST EN ISO 7235:2009

Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, f…

SIST EN ISO 5167-5:2023

Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section condui…