Appliance and method for monitoring filling level employs electromagnetic waves of defined wave length spectrum and intensity

摘要

A position adjustable angle mounting embraces a container (10) and carries a transmitter (28) on one limb and a receiver (32) on the other. Electromagnetic waves of defined wave length spectrum and intensity are beamed at the fluid and reflected waves from the fluid surface are processed by an electronic system (38) an evaluator (40) comparing the reflected signals with the original transmitted signal determines the fluid level.