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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These values are not intended to serve as acceptance specifications, which shall be subject to agreement between the machine manufacturer and the customer. If the TRIP limit is exceeded, immediate action should be taken to reduce the vibration or the machine should be shut down.

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. The recommended values illustrated in Figure A. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

Generally, the machine may be operated for a limited period in this condition until a suitable opportunity arises for remedial action.

Different operational ALARM settings may then exist for different bearings on the machine, reflecting differences in 79193 loading and bearing support stiffnesses.

Coupled industrial machines 1 Scope This part of ISO gives guidelines for applying evaluation criteria of shaft vibration under normal operating conditions, measured at or close to the bearings of coupled industrial machines. Actually as I look online at the title ofit is for industrial machines, and since you are doing a 55mW you probably should be using Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.

Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing 719-3 either ISO at the address below or ISO’s member body in the country of the requester.

Search the history 79193- over billion web 77919-3 on the Internet. Higher values of vibration can be permitted at iwo measuring positions and under transient conditions, such as start-up and run-down including passage through critical speed ranges. On the attach given at Annex A, Table A. This 7919- can be more sophisticated than that used for normal supervisory monitoring and its use and application requires specialist knowledge.

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The vibration magnitude is the higher value of the peak-to-peak displacement measured in two selected orthogonal measurement directions. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. 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.

If the steady-state baseline changes for example, after a machine overhaulthe ALARM setting should be revised accordingly. Details and advice can be obtained from the Copyright and Licensing Manager.

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

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.

Users of Indian Standards should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of ‘BIS Catalogue’ and ‘Standards: Therefore, although monitoring the change in broad-band vibration will give some indication of potential problems, it might be necessary in certain applications to use measuring and analysis equipment which is capable of determining the trends of the vector changes that occur in individual frequency components of the vibration signal.

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.

To provide a warning that a defined value of vibration has been reached or a significant change has occurred, at which remedial action may be necessary. Different operational limits, reflecting differences in dynamic loading and support stiffness, may be specified for different measurement positions and directions. Adobe is a trademark of Adobe Systems Incorporated. Copyright BIS has the copyright of all its publications. The values used will, therefore, generally be the same for all machines of similar design and would not normally be related to the steady-state baseline value used for setting ALARMS.

BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. However, it should be noted 791-3 for diagnostic purposes it might be desirable to cover a wider frequency range. For undated references, the latest edition of the referenced document including any amendments applies. For dated references, only the edition cited applies.

Vibration values within this zone are normally considered to be of sufficient severity to cause damage to the machine. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee.

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If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. A general description of the principles that are generally applicable for the measurement 7919–3 evaluation of shaft vibration of non-reciprocating machines is outlined in ISO Part 1 General guidelines For the purpose of deciding whether a particular requirement of this standard is complied with the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS 2: In particular, it should be recognized that the allowable vibration can be related to the journal diameter since, generally, running clearances will be greater for larger diameter bearings.

This Indian Standard has been developed from Doc No.: For dated references, only the edition cited applies. These values are not intended to serve as 799-3 specifications, which shall be subject to izo between the machine manufacturer and the customer.

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For details of these and other benefits contact Membership Administration. To specify the magnitude of vibration beyond which further operation of the machine may cause damage. Consequently, it can be difficult to identify the effects of the crack propagation by looking at the change in the broad-band vibration only.

In industrial machines, shaft vibration relative to the bearing is normally measured. Criterion II is specified on the basis of the change in shaft vibration magnitude occurring under steady-state operating conditions.

Therefore, although monitoring the change in broad-band vibration will give some indication of potential problems, it might be necessary in certain applications to use measuring and analysis equipment which is capable of determining the trends of the vector changes that occur isso individual frequency components of the vibration signal.

Different manufacturers may also have their ido guidelines for limits when passing through critical speeds. Machines with vibration within this zone are normally considered unsatisfactory for long-term continuous operation. This equipment can be more sophisticated than that used for normal supervisory monitoring and its use and application requires specialist knowledge. Machines with vibration within this zone are normally considered unsatisfactory for long-term continuous operation.

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