Measurment system and method

摘要: System and methods are disclosed for fluid measurements which may be utilized to determine mass flow rates such as instantaneous of a stream. In preferred embodiment, the present invention compare an input output drilling circulation one rate is determined by utilizing microwave detector in combination with acoustic sensor. The signal eliminate 2 π phase ambiguities reflected signal. another detecting shift across two different predetermined transmission paths. A density calibrated through fluid. second transmitted define particular 2π range defines shift. comprise multiple transmitters/receivers operating at frequencies measure fuel levels cryogenic fuels within containers positioned zero or near gravity environments. moveable flexible collar transmitter/receivers inhomogenuities solid rocket tubes.