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Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Specification for characteristics and calibration of hydrophones for operation in the frequency range 0.5 MHz to 15 MHz
Hardcopy , PDF
English
28-02-1989
30-05-2008
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
Defines performance characteristics of hydrophones for use in a specified range of applications, particularly those associated with the measurement of pulsed and continuous-wave ultrasonic fields used in medical diagnosis. Establishes a scheme for specification of performance and standard procedure for calibration.
| Committee |
EPL/87
|
| DevelopmentNote |
Also numbered as IEC 60866. (09/2005)
|
| DocumentType |
Standard
|
| Pages |
28
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| BS EN 61102:1994 | Specification for measurement and characterisation of ultrasonic fields using hydrophones in the frequency range 0.5 MHz to 15 MHz |
| BS 7887:1997 | Ultrasonics. Real-time pulse-echo systems. Guide for test procedures to determine performance specifications |
| BS EN 61266:1995 | Ultrasonics. Hand-held probe Doppler foetal heartbeat detectors. Performance requirements and methods of measurement and reporting |
| BS EN 61101:1994 | Specification for absolute calibration of hydrophones using the planar scanning technique in the frequency range 0,5 MHz to 15 MHz |
| BS 5652:1979 | Specification for the calibration of hydrophones |
| BS 5653:1978 | Specification for hydrophones for calibration purposes |
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