ISO 7919-3 PDF

ISO MECHANICAL VIBRATION – EVALUATION OF MACHINE VIBRATION BY MEASUREMENTS ON ROTATING SHAFTS – PART 3: COUPLED . Mechanical vibration – Evaluation of machine vibration by measurements on rotating shafts – Part 3: Coupled industrial machines (ISO. Full text of “IS/ISO Mechanical vibration – evaluation of machine vibration by measurements on rotating shafts, Part 3: Coupled Industrial Machines”.

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To specify the magnitude of vibration beyond which further operation of the machine may cause damage. Sometimes getting the OEM recommendation may involve making a phone call or an email.

If the TRIP limit is exceeded, immediate ido should be taken to reduce the vibration or the machine should be shut down.

In such cases, it is normally necessary to explain the iao for this and, in particular, to confirm that the machine will not 7919-33 endangered by operating with higher vibration values. This Indian Standard has been developed from Doc No.: However, they provide guidelines for ensuring that gross deficiencies isso unrealistic requirements are avoided. MED 28 1 Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee.

In downloading this file, parties accept therein the respons bility of not infringing Adobe’s licensing policy. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

When Criterion II is applied, the vibration measurements being compared shall be taken at the same transducer location and orientation, and under approximately the same machine operating conditions. Caution should be exercised when using the criteria presented in Annex A to ensure that no contact occurs between the rotating shaft and stationary parts.


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However, it should be noted that for diagnostic purposes it might be desirable to cover a wider frequency range. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. The values chosen will normally be set relative to a baseline value determined from experience for the measurement position or direction for that particular machine.

John from PA Leader. The work of preparing International Standards is normally carried out through ISO technical committees. The values presented are the result of experience with machinery of this type and, if due regard is paid to them, acceptable operation can be expected. Machine behavior can be very much dependent on construction details, hence why I suggest you research the OEM guidelines.

A decision on what action can be taken, if any, should then be made after consideration of the maximum value of vibration and whether the machine has stabilized at a new condition. Specifications like the ISO spec you site are going to be generic in nature since the construction of a machine may have considerable affect on its behavior.

ISO 7919-3 | AMP Maintenance Forums

These values are not intended to serve as acceptance specifications, which shall be subject to agreement between the machine manufacturer and the customer. In this adopted standard, reference appear to the following International Standard for 79919-3 Indian Standard also exists.

The vibration of newly commissioned machines normally falls within this zone.

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For undated references, the latest edition of the referenced document including any amendments applies. Revisions British Standards are updated by amendment or revision. Machines with vibration within this zone are normally considered unsatisfactory for long-term continuous operation.

BS ISO 机械振动.通过对旋转轴的测量评估机械振动.耦合工业机械 – MBA智库文档

Such changes can be instantaneous or progressive with time and can indicate that damage has occurred or be a warning of an impending failure or some other irregularity. Evaluation criteria, based on previous experience, are given for use as guidelines for assessing the vibratory conditions of such machines. This second edition cancels and replaces the first edition ISO Different operational limits, reflecting differences in dynamic loading and support stiffness, may be specified for different measurement positions and directions.

Rotodynamic pumps for industrial applications, including measurements on rotating shafts????? Where there is no established baseline for example, with a new machine the initial ALARM setting should be based either on experience with other similar machines or relative to agreed acceptance values.

If the TRIP limit is exceeded, immediate action should be taken to reduce the vibration or the machine should be shut down. No part of these publications may be reproduced in any form without the prior permission in writing of BIS.

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Therefore, unless stated otherwise, this part of ISO always refers to relative vibration displacement. Various BSI electronic information services are also available which give details on all its products and services. In such cases the evaluation zone limits should be adjusted accordingly.