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BS EN 60994:1993

Current

Current

The latest, up-to-date edition.

Guide for field measurement of vibrations and pulsations in hydraulic machines (turbines, storage pumps and pump-turbines)

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

15-02-1993

€322.53
Excluding VAT

Cooperating organizations
National foreword
Foreword
Introduction
Section One - General
1. Scope and object
1.1 Scope
1.2 Object
1.3 Excluded topics
2. Terms, definitions, symbols and units
2.1 Units
2.2 Terms
2.3 List of terms specific to this guide
2.4 Classification of hydraulic machines
3. Guarantees
Section Two - Execution of tests
4. Test conditions to be fulfilled
4.1 Operating conditions under which measurements are
     performed
4.2 Checks on the machine before the beginning of tests
5. Test procedure
5.1 Parameters determining the operating point
5.2 Vibration and pulsation quantities to be measured
     and locations of measuring points
5.3 Personnel
5.4 Agreement of test procedure
5.5 Test programme
5.6 Preparations for tests
5.7 Observations
5.8 Repetition of tests
Section Three - Methods of measurement, data acquisition
and processing
6. Considerations relating to the methods of measurement
6.1 Vibrations
6.2 Radial vibrations of the shaft relative to the
     bearings
6.3 Pressure pulsations
6.4 Stresses
6.5 Shaft torque pulsations
6.6 Rotational speed pulsations
6.7 Power pulsations
6.8 Guide vane torque pulsations
6.9 Radial thrust pulsations measured at the guide
     bearings
6.10 Axial thrust pulsations measured at the thrust
     bearing
6.11 Measured quantities defining the machine operating
     point
7. Calibration
7.1 General
7.2 Direct calibration
7.3 Calibration by electrical reference signals
8. Recording
8.1 Graphical recorders
8.2 Magnetic tape recorders
8.3 Digital recording
9. Data acquisition and processing
9.1 General
9.2 Selection of data processing methods
10. Measurement uncertainties
11. Final report
Appendices
A. Formulae for calculating principal stresses and
     signal processing for dynamic strain measurements
     with rosettes
B. Formulae for calculating the torque on a cylindrical
     solid shaft and the axial load on a rectangular or
     circular section link using the strain gauge
     technique
C. Example of final report
D. Distortion of pressure pulsation measurements for
     transducers mounted with connecting pipe
Annex ZA - (normative) Other international publications
quoted in this standard with the references of
the relevant European publications
National annex NA (informative) Committees responsible
National annex NB (informative) Cross-references

Provides guidance to establish uniform rules, measuring methods and test data processing to be applied when carrying out standard tests.

Committee
MCE/15
DevelopmentNote
Also numbered as IEC 60994. Supersedes 86/77922 DC. (12/2005)
DocumentType
Standard
Pages
66
PublisherName
British Standards Institution
Status
Current

Standards Relationship
UNE-EN 60994:1998 Identical
NF EN 60994 : 1993 Identical
NBN EN 60994 : 1993 Identical
EN 60994:1992 Identical
SN EN 60994 : 1992 Identical
I.S. EN 60994:1993 Identical

HD 178 : 200S1 METHODS FOR SPECIFYING THE CHARACTERISTICS OF ELECTROMECHANICAL TRANSDUCERS FOR SHOCK AND VIBRATION MEASUREMENTS
IEC 60184:1965 Methods for specifying the characteristics of electro-mechanical transducers for shock and vibration measurements
IEC 60222:1966 Methods for specifying the characteristics of auxiliary equipment for shock and vibration measurement
ISO 3945:1985 Mechanical vibration of large rotating machines with speed range from 10 to 200 r/s — Measurement and evaluation of vibration severity in situ
ISO 7919-1:1996 Mechanical vibration of non-reciprocating machines Measurements on rotating shafts and evaluation criteria Part 1: General guidelines
ISO 5347-0:1987 Methods for the calibration of vibration and shock pick-ups Part 0: Basic concepts
IEC 60027-1:1992 Letters symbols to be used in electrical technology - Part 1: General
ISO 2041:2009 Mechanical vibration, shock and condition monitoring Vocabulary
BS 6749-1:1986 Measurements and evaluation of vibration on rotating shafts Guide to general principles
BS 6955-0:1988 Calibration of vibration and shock pick-ups Guide to basic principles
IEC 60617-1:1985 Graphical symbols for diagrams. Part 1: General information, general index. Cross-reference tables
BS 7119:1989 Specification for shock and vibration measurements: characteristics to be specified for seismic pick-ups
ISO 8042:1988 Shock and vibration measurements Characteristics to be specified for seismic pick-ups
ISO 5348:1998 Mechanical vibration and shock Mechanical mounting of accelerometers
BS 7129:1989 Recommendations for mechanical mounting of accelerometers for measuring mechanical vibration and shock

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