Evaluation of machine vibrations based on DIN ISO 10816-3

Vibration Standard Iso 10816-3 Pdf
Iso 10816 1
Vibration Standard Iso 10816-3 Pdf Free Download
Iso 10816 3 Pdf
Iso 10816 3

I appreciate all of the responses and I guess I should have been more specific since there are multiple ISO-10816 standards that addresses different equipment. I am using ISO-10816-3 for motors and centrifugal pumps. ISO 2372 (10816) Standard Comparison The ISO 2372 (10816) Standards provide guidance for evaluating vibration severity in machines operating in the 10 to 200 Hz (600 to 12,000 RPM) frequency range. ISO 2372 (10816) Standards provide guidance for evaluating vibration severity in machines operating in the 10 to 200Hz (600 to 12,000 RPM) frequency range. Examples of these types of machines are small, direct-coupled, electric motors and pumps, production motors, medium motors, generators, steam and gas turbines, turbo-compressors, turbo-pumps and fans. ISO 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. This Part of ISO 10816 is no longer to be used as the vibration standard for pumps; it has now been superseded by part 7. 11/1/15 10:22 AM Last edited by Registered Member 11/1/15 10:26 AM.

Vibration Standard Iso 10816-3 Pdf

The scope of this standard includes steam turbines up to 50 MW, electric motors and fans. Because the scope is quite wide, the standard is explained in more detail below. The standard aims to classify the machine state in four different classes by means of vibration data for acceptance measurements and operational monitoring.

Iso 10816 1

Assessment criteria according to the standard are the RMS value of the vibration velocity and the RMS value of the vibration displacement. Usually it is sufficient to measure the vibration velocity. The additional evaluation of the vibration displacement is recommended if low frequency components are encountered. If both vibration parameters are logged and analyzed, the poorer of the two determined classes is applied.

The frequency range of the vibrations to be captured depends on the machine speed:

Vibration Standard Iso 10816-3 Pdf Free Download

10 Hz to 1000 Hz for speeds of more than 600 rpm
2 Hz to 1000 Hz for speeds of less than 600 rpm

Suitable measuring points are characterized by the fact that they reflect the dynamic forces of the machine as purely as possible. For example, locations where local resonances occur are not suitable. Suitable locations tend to be bearing stands and bearing covers; measurements are usually carried out in two orthogonal directions.

The classification also takes into account the machine substructure, subdivided into rigid and elastic substructures. If the lowest natural frequency of the whole system consisting of machine and substructure is at least 25% higher than the main exciting frequency (generally the rotational frequency), the substructure can be regarded as rigid, otherwise as elastic. This evaluation should be carried out separately for each measuring direction (two orthogonal directions, see above).

DIN ISO 10816-3:2009 describes four evaluation zones (A, B, C, D), with limit values as listed in the following table.

Machine group		1		2
Installation		rigid	elastic	rigid	elastic
RMS value of the vibration velocity in mm/s	11.00 . ∞	D	D	D	D
	7.10 . 11.00	D	C	D	D
	4.50 . 7.10	C	B	D	C
	3.50 . 4.50	B	B	C	B
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	2.30 . 2.80	B	A	B	B
	1.40 . 2.30	A	A	B	A
	0.00 . 1.40	A	A	A	A

Iso 10816 3 Pdf

Machine group		1		2
Installation		rigid	elastic	rigid	elastic
Auto type. RMS value of the vibration displacement in µm	140 . ∞	D	D	D	D
	113 . 140	D	C	D	D
	90 . 113	D	C	D	C
	71 . 90	C	B	D	C
	57 . 71	C	B	C	B
	45 . 57	B	B	C	B
	37 . 45	B	A	B	B
	29 . 37	B	A	B	A
	22 . 29	A	A	B	A
	0 . 22	A	A	A	A

Iso 10816 3

Zone A	The vibrations of recently commissioned machines tend to be in this zone.
Zone B	Machines with vibrations in this zone are usually regarded as suitable for continuous operation without restrictions.
Zone C	Machines with vibrations in this zone are usually regarded as unsuitable f