The main target of condition monitoring and machinery protection systems is to ensure the health and continuous operation of the plant machinery. In this regard vibration measurement systems along with vibration transducers are installed for continuous measurement and analysis of machine vibrations. To this end users need a reference to compare machine vibration with it to evaluate the state of each machine. ISO provides a reference like allowable vibrations and alarm or trip conditions for various machinery based on some statistical analysis of historical data gathered by ISO TC ISO General Machines ISO is a basic document which sets out general guidelines for the measurement and evaluation of mechanical vibration of machines, as measured on non-rotating parts.
|Published (Last):||18 September 2006|
|PDF File Size:||2.5 Mb|
|ePub File Size:||7.24 Mb|
|Price:||Free* [*Free Regsitration Required]|
Vikinos The maximum vibration magnitude observed at each bearing or pedestal is assessed against four evaluation zones established from international experience.
It should be noted, however, that the vibration of a gas turbine can be influenced by its mounting system and coupling arrangement to driven machines. It also includes any driven equipment not included in the exclusion list below.
Shaft vibration measurement requirements and criteria for gas turbine sets are addressed in separate documents, ISO and ISO However, for long-term condition monitoring purposes and for diagnostics, the use of vibration vector information is particularly useful for detecting and defining changes in the dynamic state of the machine.
If the vibration consists mainly of one frequency component, a simple relationship exists between the peak and r. All standards are subject to revision, and parties to agreements based on this part of ISO are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
Get fast, free shipping with Amazon Prime. The values in table A. If the steady-state baseline changes for example after a machine overhaulthe ALARM setting should be revised accordingly.
Amazon Drive Cloud storage from Amazon. Need more than one copy? The basis for this is that the TRIP value is a fixed value corresponding to —4 maximum vibration to which the machine should be subjected.
The following are excluded from this part of ISO Figure 1 shows typical measurement positions. The difference between the shaft absolute and shaft relative measurements is related to the bearing housing vibration but may not be numerically equal to it because of phase angle differences.
This title may contain less than 24 pages of technical content. Click here to sign up. Gas turbine driven sets excluding aircraft derivatives — Part 5: Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your , and attract new followers and customers.
Read more Read less. Such conditions allow for small changes in variables such as generator power output at the normal operating speed. The common measurement parameter for assessing machine vibration severity is velocity. The vibration of newly commissioned machines would normally fall within this zone.
Shopbop Designer Fashion Brands. Amazon Restaurants Food delivery from local restaurants. This part of ISO encompasses machines which may have gears or rolling element bearings but does not address the evaluation of the condition of those gears or bearings. Amazon Music Stream millions of songs. Significant changes from the normal vibration magnitudes should be investigated so that a dangerous situation may be avoided.
Remember me on this computer. However, experience with a specific machine may prescribe a different value. English Choose a language for shopping. Write a customer review. In such cases, it is normally necessary for the manufacturer to explain the reasons for this and, in particular, to confirm that the machine will not be endangered by operating with higher vibration values.
Would you like to tell us about a lower price? TOP Related Posts.