The application of finite element to analyze the accuracy for radar system

Radar is one choice for level measurement in petrochemicals industry with high degree of accuracy. The radar provides a non-contact sensor that is virtually unaffected by change in process temperature, pressure or the gas vapor composition within a vessel. The measurement accuracy is unaffected by change in density, conductivity and dielectric constant of product being measure or by air movement above the product. These benefits have become more significant to the process industry since the advent of radar owing to low maintenance cost as there are no moving parts. This is the reason radar are so popular for industrial applications presently. However we found that some measurement value deviates from the actual level after the radar is in operation for few years. We have used Finite Element Technique to investigate for deviation, as our case study.