Microwave Doppler-Effect Flow Monitor

This paper contains a discussion of the capabilities and limitations of a modem solid-state microwave Doppler radar used for monitoring the flow rates of moving materials. Experimental results Of monitoring flow rates of paritculate solids are presented. It has been concluded that the average Doppler frequency is proportional to the average bulk velocity. When the bulk density and the crosssectional area of the pipe are known, the system-provides contactless means of-monitoring the mass flow rate of particulate solids.