DIN EN 61161:2007 Ultrasonics - Power measurement - Radiation force balances and performance requirements (IEC 61161:2006); German version EN 61161:2007
2013DIN EN 61161:2013-11 Ultrasonics - Power measurement - Radiation force balances and performance requirements (IEC 61161:2013); German version EN 61161:2013 / Note: DIN EN 61161 (2007-09) remains valid alongside this standard until 2016-03-06.
2013DIN EN 61161:2013 Ultrasonics - Power measurement - Radiation force balances and performance requirements (IEC 61161:2013); German version EN 61161:2013
2007DIN EN 61161:2007 Ultrasonics - Power measurement - Radiation force balances and performance requirements (IEC 61161:2006); German version EN 61161:2007