I am doing some research work on level monitoring in chip silos. My assigment specifies research mainly on microwave/radar* units. What I would like to know is if there any drawbacks with microwave level sensors, compared to ultrasonic or radioactive sensors? How accurate will microwave sensors be over a period of years? How good are absolute measuring errors on typical microwave units? (when applied to a typical dry bulk silo). Do all microwave sensors work in the same way? What shaped silo is ideal? The most accurate mounting place?
Any replies are very welcome, as we are mainly looking for experienced results, not general data given from a manufacturer.
Paul Davis - paulgodf@stud.ntnu.no
Thomas Moldbrekke - moldbrek@stud.ntnu.no
of the Norvegian University of Science and Technology
*Some people say radar level sensors, others say microwave. We are doing research on sesors that work in the same way as radars do! (emitting microwaves e.g. between 9-26GHz)