EN 61161:2013 Ultrasonics - Power measurement - Radiation force balances and performance requirements
IEC 60050 Amendment 3 - International Electrotechnical Vocabulary (IEV) - Part 904: Environmental standardization for electrical and electronic products and systems*, 2019-10-17 Update
IEC 62127-2 Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields up to 40 MHz*, 2017-03-01 Update
ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
BS EN 62555:2014 history
2014BS EN 62555:2014 Ultrasonics. Power measurement. High intensity therapeutic ultrasound (HITU) transducers and systems