Working principle

The radio frequency admittance level meter is a continuous level measurement product based on the principle of radio frequency admittance. The product has the advantages of high stability, high sensitivity and wide application. Compared with the traditional capacitive level meter, it adopts modular design, which can realize simple and convenient instrument setting. Once the setting is completed, it can be used normally and maintenance-free for life. It enables users to intuitively understand the operation of the equipment and deal with the problems in time. It is also safe and reliable in complex industrial occasions.

Radio frequency admittance measurement technology is a level measurement technology with unique advantages. Although the concept is very similar to the general capacitive measurement technology, the RF admittance technology adds a Driving-Shield circuit and a chopper circuit in the electronic unit, so it can realize the independent measurement of impedance and capacitive reactance. It can be calculated by the laws of physics that the magnitude of the impedance and capacitive reactance of any hanging material is equal, so the effect caused by the hanging material can be measured and eliminated from the total output by the phase shift of the oscillating circuit.

The probe of the radio frequency admittance level meter is installed in the storage tank, and the change of the radio frequency signal caused by the change of the material level is obtained through the probe. The Driving-Shield end of the probe can prevent the RF current from forming a loop through the hanging material, which ensures the accuracy of the instrument measurement. 

Design Features

◎Anti-hanging material  Unique Driving-Shield circuit design improves  Anti-hanging ability

◎Power supply                  Power supply working range: 13~35VDC

◎Adaptability          Probe process temperature: -100℃~800℃

 No dead zone measurement. It can be applied to the level measurement occasions of ten centimeters or even a few centimeters.

 Large range, the maximum measurement range can reach hundreds of meters or even hundreds of meters.

The interface measurement of viscous materials is a huge advantage of this instrument

◎Stability             Stable and reliable output, resistant to fly ash, blanking, water vapor, crystallization, wax deposition

◎Maintenance free      No moving, no wear parts, no need for frequent cleaning,  no need for constant maintenance and debugging