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marksl

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Hello,

I'm trying to setup alarm levels in an online vibration system which will be used to generate alarm notifications so I was wondering what part of the ISO 10816 is applicable to Industrial overhung fans. The research I have done using google would suggest 10816-3 would be the best suited. I'm assuming that 10816 hasn't been replaced

Thanks
George D

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ISO 14694...
trapper

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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 14695:2003ISO 10816-3:2009 gives criteria for assessing vibration measurements when made in situ. The criteria specified apply to machine sets having a power above 15 kW and operating speeds between 120 r/min and 15 000 r/min..

Shoveldr

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10816 has been replaced... by 20816, but I haven't seen that much difference between the two.

I bought it out of spite, someone kept throwing 10816 at me, so I pointed out they were using an obsolete specification.

Alex

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Shoveldr, a little off topic but the biggest difference I can see is to pay more money [wink] And all the confusion that it brings along. Standards shouldn't change like changing the underwear. Only IMO.
OLi

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Oh it's every 3 years I think, for each part of underwear but yes I agree it is costly and drives confusion that is really not needed, there seem to be a fair amount of bean counters involved?
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Good Vibrations since early 1950's, first patented vibrometer 1956 in the US.
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George D

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I believe the current version of ISO 10816-3 has remained unchanged since 2009? By my understanding this is the version most useful for casing vibration of industrial machines... when other, more specific, standards are not offered.  The revision that occurred in 2009 was, I believe, a useful update... splitting out both casing and shaft thresholds for pumps into 10816-7.
As far as the original question, I believe ISO 14694 serves the need for recommended casing vibration thresholds for fans.  Although I don't have a copy, I believe AMCA 204-20 (Air Movement and Control Association) provides similar recommended vibe thresholds.
marksl

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Quote:
Originally Posted by trapper

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 14695:2003ISO 10816-3:2009 gives criteria for assessing vibration measurements when made in situ. The criteria specified apply to machine sets having a power above 15 kW and operating speeds between 120 r/min and 15 000 r/min..



Is there any acceleration alarm levels in ISO 14695 all I can find on google is Velocity alarms 
MarkL

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Pretty nigh impossible to get any type of acceleration alarm tables/standards bar the General motors standard, and those are mainly for machine tools.
And for that you'll need to pack for a long read..take some coffee.

https://www.maintenance.org/fileSendAction/fcType/0/fcOid/399590942963972104/filePointer/399590942964810069/fodoid/399590942964810067/GMVibeStandard.pdf
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