초록 ▼

A parabolic antenna for measuring the level in containers is proposed, a transmitted pulse from a transmitting and receiving device being focused via the parabolic antenna and directed onto the surface of a filled material whose level is to be determined, and the pulse reflected at the surface of th

A parabolic antenna for measuring the level in containers is proposed, a transmitted pulse from a transmitting and receiving device being focused via the parabolic antenna and directed onto the surface of a filled material whose level is to be determined, and the pulse reflected at the surface of the filled material being received again by the receiving device via the parabolic antenna. For the purpose of introducing the measuring instrument through an opening in the container, the parabolic antenna can be folded and unfolded by being positively moved.

대표청구항 ▼

[ I claim:] [1.] A parabolic antenna for focusing transmitted and reflected pulses during measurement of a level of a material in a closed container, the closed container having an instrument opening, antenna comprising a parabolic reflector moveable between a closed position and an open position, a

[ I claim:] [1.] A parabolic antenna for focusing transmitted and reflected pulses during measurement of a level of a material in a closed container, the closed container having an instrument opening, antenna comprising a parabolic reflector moveable between a closed position and an open position, and an adjusting device coupled to the parabolic reflector, wherein the adjusting device folds the parabolic reflector by positive movement to the closed position for insertion through the instrument opening, and the adjusting device can be operated through the instrument opening to unfold the parabolic reflector by positive movement to the open position and to fold the parabolic reflector by positive movement to the closed position while the parabolic antenna is inside the container.