2008BS EN 62127-1:2007+A1:2013 Ultrasonics. Hydrophones. Measurement and characterization of medical ultrasonic fields up to 40 MHz
2008BS EN 62127-1:2007 Ultrasonics — Hydrophones — Part 1: Measurement and characterization of medical ultrasonic fields up to 40 MHz
2002BS EN 62092:2002 Ultrasonics - Hydrophones - Characteristics and calibration in the frequency range from 15 MHz to 40 MHz
1995BS EN 61220:1995 Ultrasonics - Fields - Guidance for the measurement and characterization of ultrasonic fields generated by medical ultrasonic equipment using hydrophones in the frequency range 0.5 MHz to 15 MHz
1994BS EN 61102:1994 Specification for measurement and characterisation of ultrasonic fields using hydrophones in the frequency range 0.5 MHz to 15 MHz
1989BS 7041:1989 Specification for characteristics and calibration of hydrophones for operation in the frequency range 0.5 MHz to 15 MHz