RADAR LEVEL GAUGE

摘要

Control and measuring of liquid and free-flowing substances levels in reservoirs is described. A radar level gauge is equipped with a level sensor, a detection pattern control unit of the microstrip antenna, an interface converter and a control device. A control unit of the detection pattern control unit is installed on its internal side and contains controllable phase shifting devices and an angular position measurement unit. The position of the microstrip antenna detection pattern is changed via phase control of a sounding signal produced by groups of elementary radiators. The phase shifting devices are controlled through a control device. A control signal is generated based on data provided by a measurement unit on the current angular position of the plane of the microstrip antenna and on the required inclination angle of the detection pattern sent by the level sensor.

主权项

1. A radar level gauge containing the level sensor with the usage of the microstrip antenna, interface converter and control device, characterized in that it is additionally equipped with the detection pattern control unit of the microstrip antenna which signal input is connected with the level sensor and the signal output is connected with the microstrip antenna, while the control input and data output of the detection pattern control unit are connected with the control device.