Ultrasonic Level Meters

ultrasonic level meters are compact measurement devices including an electroacoustics converter, central processor
unit and display module. Using the electroacoustics converter, the level meters transmit the sequence of ultrasonic pulses
that spread towards the surface level. The converter recuperates refl ected acoustic waves that are subsequently processed in
the electronic module. The intelligent evaluation block fi lters out interfering signals, compares the cleaned received signal with
the false refl ection map (e.g. from mixers, ladders, reinforcement etc.) and selects a suitable refl ection (echo). Based on the
period during which the individual pulses spread towards the surface level and back and based on the measured temperature
in the tank, the instant distance to the surface level is calculated. According to the level height, the level meter output is set and
the measured value is displayed on the display.