What is BS EN IEC 60565-1 - Hydrophones about?
BS EN IEC 60565-1 is the first part of the BS EN IEC 60565 series of documents that specifies methods and procedures for free-field calibration of hydrophones, as well as individual electroacoustic transducers that can be used as hydrophones (receivers) and/or projectors (source transducers). Two general types of calibration is covered within BS EN IEC 60565-1 : absolute calibration using the method of the transducer spherical-wave reciprocity, and relative calibration by comparison with a reference to the device which has already been the subject of an absolute calibration.
The maximum frequency range of the methods specified in BS EN IEC 60565-1 is from 200 Hz to 1 MHz. The lowest acoustic frequency of application will depend on a number of factors and will typically be in the range of 200 Hz to 5 kHz depending mainly on the dimensions of the chosen test facility, The highest frequency of application for the methods described here is 1 MHz.
BS EN IEC 60565-1 presents a description of the requirements for free-field calibration in terms of the test facility, equipment and instrumentation, signal processing, and frequency limitations. A description of achievable uncertainty and rules for the presentation of the...
Open preview (PDF)Underwater acoustics. Hydrophones. Calibration of hydrophones - Procedures for free-field calibration of hydrophones
