What are the different principles on which level detectors are based?
The choice of a Transducer used for any particular level detector application depends on the characteristics of the service material and the conditions in the vessel and its environment. Since various types of materials are stored in a processing plant under varied conditions inside and outside the vessel, a universal solution is never possible. Leading technologies of level detection today are based on the following principles: Conductivity, RF Capacitance, RF Admittance, Electromechanical, Hydrostatic, Ultrasonic, Microwave and Nuclear. A deep study of the various parameters of the particular application is most essential for making the right choice. Normally, level instrument manufacturers are aware of the limitations of their products, and given the site conditions in detail they are the right people who can recommend the appropriate measuring system.
