RADAR PULSE RECIRCULATION LEVEL INDICATOR Russian patent published in 2001 - IPC

FIELD: measurement of level of liquid an loose substances in tanks of oil production, petroleum refining, chemical and other enterprises. SUBSTANCE: level indicator is inserted with reflector of reference signal, channel of selection of reflected pulses enabling recirculation in level indicator to be carried out either by reference signal or by information signal depending on preset delay of selected pulse, selected automatic gain control securing constancy of amplitude of selected signals across output of receiver and processor forming instruction controlling selected pulses, making required calculations and forming output information in specified form. EFFECT: raised accuracy of measurement of level. 3 dwg