NF EN ISO 2151

NF EN ISO 2151

December 2008
Standard Current

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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National standards and national normative documents

Publication date

December 2008

Number of pages

37 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 - 18/11/2008

International kinship

ISO 2151:2004

European kinship

EN ISO 2151:2008
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)
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.

Table of contents
  • 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 LWA
    8
  • 5.3 Méthode pour la détermination de LpWSA lorsque LWA 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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