The MWS-DP-3-24V Microwave Solids Flow Sensor detects moving solids utilizing microwave high penetrability and the Doppler effect.
The sensing head transmits microwaves toward the target material.
A portion of the microwaves are reflected back to the sensing head and analysed as to whether they are from a moving or stationary object.
The highly-penetrable microwave passes through a buildup on the head and even through pipe made of non-conducting materials such as plastics.
It is best suited for detecting such materials as powders, granules, etc, moving through a vacuum pipeline.