The product information / comparison is always in the context of a concrete application.
Please select your relevant application:

Measuring task	Product name
Continuous / Liquids	Deltapilot M FMB50	Deltapilot M FMB53	Deltapilot M FMB52	Deltapilot M FMB51
Pressure	Deltapilot M FMB50	Deltapilot M FMB53	Deltapilot M FMB52	Deltapilot M FMB51