NF ISO 14695

NF ISO 14695

September 2003
Standard Current

Industrial fans - Method of measurement of fan vibration

ISO 14695:2003 describes a method of measuring the vibrational characteristics of fans of all types, except those designed solely for air circulation, for example, ceiling fans and table fans. However, it is limited to fans of all types installed with a power of less than 300 kW. For fans of greater power than this, the methods described in ISO 10816-1 and the applicable limits given in ISO 10816-3 may be used. ISO 14695:2003 gives a general method only and does not give criteria for interpretation of data (see ISO 14694).ISO 14695:2003 specifies the measurement of vibration that may be recorded as overall root-mean- square (r.m.s.) velocity, acceleration or displacement, or in terms of a frequency spectrum, within the appropriate frequency range. Methods of testing when suspended on elastic ropes or when installed on resilient mountings are included.It is recognized that the oscillatory forces at mounting points can be a useful measurement for analysing the effects on support structures; but such measurements are outside the scope of ISO 14695:2003.

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Collections

National standards and national normative documents

Publication date

September 2003

Number of pages

40 p.

Reference

NF ISO 14695

ICS Codes

17.160   Vibrations, shock and vibration measurements
23.120   Ventilators. Fans. Air-conditioners

Classification index

E51-005

Print number

1 - 30/09/2003

International kinship

ISO 14695:2003
Sumary
Industrial fans - Method of measurement of fan vibration

ISO 14695:2003 describes a method of measuring the vibrational characteristics of fans of all types, except those designed solely for air circulation, for example, ceiling fans and table fans. However, it is limited to fans of all types installed with a power of less than 300 kW. For fans of greater power than this, the methods described in ISO 10816-1 and the applicable limits given in ISO 10816-3 may be used. ISO 14695:2003 gives a general method only and does not give criteria for interpretation of data (see ISO 14694).

ISO 14695:2003 specifies the measurement of vibration that may be recorded as overall root-mean- square (r.m.s.) velocity, acceleration or displacement, or in terms of a frequency spectrum, within the appropriate frequency range. Methods of testing when suspended on elastic ropes or when installed on resilient mountings are included.

It is recognized that the oscillatory forces at mounting points can be a useful measurement for analysing the effects on support structures; but such measurements are outside the scope of ISO 14695:2003.

Table of contents
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    2
  • 4 Symboles et unités
    2
  • 5 Montage du banc d'essai
    5
  • 5.1 Généralités
    5
  • 5.2 Montage de ventilateur sur base élastique
    5
  • 5.3 Montage de ventilateur avec corde élastique
    7
  • 5.4 Montage rigide de ventilateur
    9
  • 5.5 Manchettes souples de raccordement
    9
  • 6 Équipement de mesurage
    9
  • 6.1 Généralités
    9
  • 6.2 Étalonnage
    9
  • 6.3 Instrumentationlappareillage
    10
  • 6.4 Transducteurs
    11
  • 6.5 Accéléromètres piézoélectriques
    11
  • 6.6 Préamplificateurs
    11
  • 6.7 Analyseurs
    11
  • 6.8 Indicateurs
    12
  • 6.9 Sorties
    12
  • 7 Fixation du transducteur
    12
  • 7.1 Généralités
    12
  • 7.2 Fixations
    13
  • 8 Choix de positions de mesurage
    15
  • 8.1 Généralités
    15
  • 8.2 Montage sur base combinée
    15
  • 8.3 Montage des transducteurs sur d'autres ventilateurs
    15
  • 9 Environnement d'essai et données de fonctionnement
    17
  • 10 Mode opératoire
    17
  • 10.1 Généralités
    17
  • 10.2 Paramètres de mesures
    18
  • 10.3 Analyse de fréquence
    18
  • 11 Présentation des résultats
    19
  • Annexe A (informative) Lignes directrices pour le calcul des positions de montage élastique et des fréquences propres de corps rigides
    20
  • Annexe B (informative) Méthodes de mesures supplémentaires pour essais in situ ou classement de qualité
    26
  • Annexe C (informative) Positions de mesurage recommandées pour les diagnostics des machines
    28
  • Annexe D (informative) Relations entre niveaux vibratoires absolus et niveaux exprimés en décibels des caractéristiques vibratoires
    30
  • Annexe E (informative) Relations entre grandeurs de vibration d'un signal de fréquence unique
    32
  • Bibliographie
    34
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