Vibration control Standards for measurements

Requirements for instruments GOST General-purpose measuring instruments for determination of main vibration parameters. General requirements GOST ISO Mechanical vibration of rotating and reciprocating machinery. Requirements for instruments for measuring vibration severity. GOST Vibration. Portable balancing equipment. Technical requirements.

Vibration criteria GOST ISO Mechanical vibration. Evaluation of machine vibration by measurements on non-rotating parts. Part 1. General guidelines GOST R Mechanical vibration. Evaluation of machine vibration by measurements on non-rotating parts. Part 2. Land-based steam turbines and generators in excess of 50 MW with normal operating speeds of 1500 r/min, 1800 r/min, 3000 r/min and 3600 r/min GOST ISO Vibration. Evaluation of machine vibration by measurements on non-rotating parts. Part 3. Industrial machines with nominal power above 15 kW and nominal speeds between 120 r/min and r/min GOST ISO Vibration. Evaluation of machine vibration by measurements on non-rotating parts. Part 4. Gas turbine driven sets GOST ISO Vibration. Evaluation of machine vibration by measurements on non-rotating parts. Part 5. Machine sets in hydraulic power generating and pumping plants GOST ISO Vibration. Evaluation of machine vibration by measurements on non-rotating parts. Part 6. Reciprocating machines with power above 100 kW GOST Land-based steam turbine-generator sets. Evaluation of machine vibration by measurement on non-rotating parts and general requirements for the measurement of vibration GOST Mechanical vibration. Centrifugal feed pumps for thermal stations. Evaluation of machine vibration and requirements for the measurement of vibration Others

ISO This is the base group of standards where general guideline for evaluation of machine vibration is given when vibration is measured on non-rotating parts such as bearing housings. The standard is utilized 3 main vibration parameters: acceleration, velocity and displacement and described rules for applying limits. Following to guidelines in most cases allow to expect working condition of equipment.

Measurement parameters Frequency range: 10 – 1000 Hz Magnitude units - А,V,S Levels Points

Measurement points on bearing housing

Measurement points on small motor

Measurement points motor and vertical machine

Evaluation criteria Criteria 1 – magnitude level Criteria 1 is related to limits of absolute vibration levels with respect to dinamic loads on the bearing and transition of vibration through foundation. Max value taken on every bearing is compared to limits existing for 4 zones related to machinery condition.

Classification of zones Zone А – Newly commissioned machinery. Zone В – Machine could operate with no limits. Zone С – Machine needs for maintanence and could operated limited period of time. Zone D – Serious malfunction of machine is expected.

Limits for machinery condition zones

Criteria 2 – changing of measured values Criteria is relied on changes of values compare to referencies. Great changes of vibration (increase or decrease) in broadband frequency range could be the signal to inspect condition of machine even if limits of zone C are still not exceeded. Evaluation criteria

Alarm levels for vibration «ALARM» - overall vibration level exceeded limits when machine need inspection and maintenance action to be done. Operation of machine is limited. «FAULT» - overall vibration level exceeded limits when further machine operation could lead to breakdown. Action to lower vibration is required immediately or machinery should be stopped.

Machinery classification Class 1 – Small machines to 15 kW Class 2 – Machines up to 75 kW on light foundations and machines up to 300 kW on heavy foundations Class 3 – Machines above 300 kW on heavy and rigid foundations Class 4 - Machines above 300 kW on flexible foundations (soft mount)

Table of vibration severity A B C D

HARDWARE (Devices, Systems and Software for vibration mesurments)

Types of measurement equipment Vibrometers and vibration analyzers On-line (stationary) systems

Виброметр BALTECH VP-3405(-2) (overall displacement, velocity, acceleration) Peak value of acceleration - (A) RMS value of vilocity - (V) Pk-Pk value of displacement - (S) Frequency range Hz Build-in accel sensor

Виброметр BALTECH VP-3410 (overall displacement, velocity, acceleration) Peak value of acceleration - (A) HF value of acceleration RMS value of vilocity - (V) Pk-Pk value of displacement - (S) Frequency range Hz Accel sensor with cable

BALTECH VP-3450 Bearing condition checker Shock pulse method Bearing and oil failure Audible output (for noise evaluation by ears)

BALTECH VP ch vibrometer with balancing function and time waveform capturing Two channel measurement and vibration analysis (2 vibration channels, 1 tach channel). Vibration meter mode: vibration overall level measurement (velocity, acceleration, displacement, RMS, Peak, excess). Phase meter mode. Vector calculator. Multi plane balancing (4 planes - 16 measurement points, test run, dynamic influence coefficient). Test weight calculation. Balancing mass and angle calculation. Stroboscope connection. Waveform measurement (oscilloscope). Spectral analysis (velocity, acceleration, displacement). Waveform and spectral analysis of envelope. The measured data can be transferred from BALTECH VP-3470 to the BALTECH Expert software for data analysis, trending, diagnostics and reporting. Computer control with extended analysis opportunities.

Software BALTECH-Expert 1) Multi-level configuration database 2) Create a route 3) Enter data manually 4) Vibration monitoring in accordance with ISO Standard 10816, 25364, ) Set the threshold vibration levels 6) Analysis of the trends and levels of vibration spectra, time signals of vibration of any scalar quantities 7) Analysis and diagnostics across all levels of the hierarchy 8) Analysis of the thermograms and trending by any parameters (for example, by setting the oil) 9) Reporting on all types of measurement (vibration, alignment, balancing, thermography)

Software BALTECH-Expert

BALTECH BCM-6150 Bearing Check Machine Automatic diagnostics of condition of rolling bearings of various modifications. Reject and return of illiquid bearings. Registration and analysis of vibration signals from sensors installed on the bearing under test, in order to identify the features of a technical condition of rolling bearings. Storing database rolling bearing, the selection of similar to the geometric dimensions, in order to replace the bearings.

BALTECH on-line systems On-line monitoring of technology parameters

BALTECH Germany Kronsforder Allee 45, 23560, Lübeck Tel: +49 (0) , Fax: +49 (0) , Internet: Russia St. Petersburg, , Chugunnaya, 40 Tel/fax: +7 (812) , Internet: Kazakhstan Astana city, Pobeda Avenue (Avenue Jenis) 79B, office number 408 Tel/fax: +7 (7172) , , , Internet: