BS EN 60994:1993
Current
The latest, up-to-date edition.
Guide for field measurement of vibrations and pulsations in hydraulic machines (turbines, storage pumps and pump-turbines)
Hardcopy , PDF
English
15-02-1993
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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