As a radar measurement device 100 for level and/or limit level monitoring, -A radar signal source 102 configured to generate and/or transmit a radar signal -An antenna device 104 configured to direct a radar signal, -A plano convex lens 106 having a flat surface configured to focus the aligned radar signal, The radar measurement device 100 has a flat surface at least partially lying on the surface of the container 118, and a contact surface 112 is formed between the plano convex lens 106 and the container 108.
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