BS 7041:1989
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for characteristics and calibration of hydrophones for operation in the frequency range 0.5 MHz to 15 MHz
Hardcopy , PDF
30-05-2008
English
28-02-1989
National foreword
Committees responsible
List of symbols
1 Scope
2 Object
3 Definitions
3.1 Free field
3.2 Far field
3.3 Acoustic centre
3.4 Hydrophone (or receiver)
3.5 Reversible transducer
3.6 Reciprocal transducer
3.7 Open-circuit voltage at hydrophone
3.8 Free-field sensitivity of a hydrophone
3.9 Free-field sensitivity level
3.10 Transmitting response to current of a projector
3.11 Reciprocity coefficient
3.12 Direction response of a hydrophone
3.13 End-of-cable leakage resistance
3.14 Mechanical Q of hydrophone element
4 General introduction
4.1 Choice of measurement method
4.2 Basis of recommendations
4.3 Effect of the finite size of hydrophones
4.4 Hydrophone calibration
5 Hydrophone characteristics
5.1 Sensitivity
5.2 Directivity
5.3 Electrical characteristics
5.4 Mechanical characteristics
6 Specification of performance of a hydrophone
6.1 Free-field voltage sensitivity
6.2 Directivity
6.3 Electrical aspects
6.4 Mechanical and environmental aspects
7 Hydrophone calibration
7.1 Reciprocity techniques
7.2 Principle of the two-transducer reciprocity method
7.3 Calibration measurement conditions
7.4 Experimental method
7.5 Calculation of results
7.6 Accuracy
Appendices
A Rationale for the reciprocity procedure
B Plane wave reciprocity
C Details of the recommended experimental procedures
D Evaluation of the correction factor, k
E Bibliography
Figures
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