NF EN ISO 2151

NF EN ISO 2151

July 2004
Standard Cancelled

Acoustics - Noise test code for compressors and vacuum pumps Engineering method (grade 2)

ISO 2151:2004 specifies methods for the measurement, determination and declaration of the noise emission from portable and stationary compressors and vacuum pumps. It prescribes the mounting, loading and working conditions under which measurements are to be made, and includes measurement or determination of the noise emission expressed as the sound power level under specified load conditions and the emission sound pressure level at the work station under specified load conditions. It is applicable to compressors for various types of gases, oil-lubricated air compressors, oil-flooded air compressors, water injected air compressors, oil-free air compressors, compressors for handling hazardous gases (gas compressors), compressors for handling oxygen, compressors for handling acetylene, high pressure compressors (over 40 bar/4 MPa), compressors for application at low inlet temperatures (i.e. below 0 °C), large compressors (over 1 000 kW input power), portable and skid-mounted air compressors, and rotary positive displacement blowers and centrifugal blowers and exhausters in applications of 2 bar/0,2 MPa or less. It is not applicable to compressors for gases other than acetylene having a maximum allowable working pressure of less than 0,5 bar/0,05 MPa, refrigerant compressors used in refrigerating systems or heat pumps, nor to hand-held portable compressors.

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Main informations

Collections

National standards and national normative documents

Publication date

July 2004

Number of pages

35 p.

Reference

NF EN ISO 2151

ICS Codes

17.140.20   Noise emitted by machines and equipment
23.140   Compressors and pneumatic machines

Classification index

S31-020

Print number

1 - 19/07/2004

International kinship

ISO 2151:2004

European kinship

EN ISO 2151:2004
Sumary
Acoustics - Noise test code for compressors and vacuum pumps Engineering method (grade 2)

ISO 2151:2004 specifies methods for the measurement, determination and declaration of the noise emission from portable and stationary compressors and vacuum pumps. It prescribes the mounting, loading and working conditions under which measurements are to be made, and includes measurement or determination of the noise emission expressed as the sound power level under specified load conditions and the emission sound pressure level at the work station under specified load conditions.

It is applicable to compressors for various types of gases, oil-lubricated air compressors, oil-flooded air compressors, water injected air compressors, oil-free air compressors, compressors for handling hazardous gases (gas compressors), compressors for handling oxygen, compressors for handling acetylene, high pressure compressors (over 40 bar/4 MPa), compressors for application at low inlet temperatures (i.e. below 0 °C), large compressors (over 1 000 kW input power), portable and skid-mounted air compressors, and rotary positive displacement blowers and centrifugal blowers and exhausters in applications of 2 bar/0,2 MPa or less. It is not applicable to compressors for gases other than acetylene having a maximum allowable working pressure of less than 0,5 bar/0,05 MPa, refrigerant compressors used in refrigerating systems or heat pumps, nor to hand-held portable compressors.

Replaced standards (1)
S31-020
February 1987
Published document Cancelled
Acoustics. Measurement of airborne noise emitted by compressor units including prime movers. Method for checking compliance with noise limits.

Le présent fascicule de documentation décrit une méthode de mesurage du bruit aérien émis par les motocompresseurs, basée sur les principes généraux de la norme NF S 31-061. Il spécifie les conditions de fonctionnement pour les essais, les caractéristiques de l'environnement d'essai et les conditions de mesurage des niveaux de pression acoustique autour de la machine.

Standard replaced by (1)
NF EN ISO 2151
December 2008
Standard Current
Acoustics - Noise test code for compressors and vacuum pumps - Engineering method (Grade 2)

<p>ISO 2151:2004 specifies methods for the measurement, determination and declaration of the noise emission from portable and stationary compressors and vacuum pumps. It prescribes the mounting, loading and working conditions under which measurements are to be made, and includes measurement or determination of the noise emission expressed as the sound power level under specified load conditions and the emission sound pressure level at the work station under specified load conditions. </p> <p>It is applicable to compressors for various types of gases, oil-lubricated air compressors, oil-flooded air compressors, water injected air compressors, oil-free air compressors, compressors for handling hazardous gases (gas compressors), compressors for handling oxygen, compressors for handling acetylene, high pressure compressors (over 40 bar/4 MPa), compressors for application at low inlet temperatures (i.e. below 0 °C), large compressors (over 1 000 kW input power), portable and skid-mounted air compressors, and rotary positive displacement blowers and centrifugal blowers and exhausters in applications of 2 bar/0,2 MPa or less. It is not applicable to compressors for gases other than acetylene having a maximum allowable working pressure of less than 0,5 bar/0,05 MPa, refrigerant compressors used in refrigerating systems or heat pumps, nor to hand-held portable compressors.</p>

Table of contents
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  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    2
  • 3 Termes et définitions
    2
  • 4 Détermination du niveau de puissance acoustique
    5
  • 4.1 Généralités
    5
  • 4.2 Incertitude
    6
  • 4.3 Dispositions pour l'essai
    6
  • 5 Détermination du niveau de pression acoustique d'émission au poste de travail
    7
  • 5.1 Poste de travail
    7
  • 5.2 Détermination de LpWSA à partir de L WA
    8
  • 5.3 Méthode pour la détermination de LpWSA lorsque L WA n'a pas besoin d'être déterminé
    9
  • 6 Conditions de montage, de mise en charge et de fonctionnement d'un compresseur ou d'une pompe à vide pendant les essais de bruit
    9
  • 6.1 Généralités
    9
  • 6.2 Montage
    9
  • 6.3 Conditions de mise en charge et de fonctionnement
    9
  • 7 Rapport d'essai
    10
  • 8 Déclaration et vérification des valeurs d'émission sonore
    10
  • Annexe A (informative) Exemples de rapports d'essai
    11
  • Annexe B (informative) Modèle de formulaire pour les valeurs déclarées d'émission sonore
    17
  • Annexe C (normative) Surface de mesurage parallélépipédique
    18
  • Annexe D (normative) Surface de mesurage hémisphérique
    20
  • Annexe E (informative) Exemples de parallélépipèdes de référence pour différentes machines
    22
  • Bibliographie
    25
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