it doesn't matter if it cont or bendix both do the same job. fuel px is measured post pump and pre fcu. wf is measured post fcu. it can be measure as px and conveverted as I've said to read wf or you can have a vane or spool type that measures flow pre spider and post fcu and it must have a in and a out, if it doesn't have that its measuring px.
Perhaps you wont explain because you don't know ? but do enlighten me how then it measures its fuel air ratio to provide the correct settings.
Now yesterday I worked on 3 different engines including turbine types and one airframe and gave advise on one other airframe. Now its impossible for me to know each individual aeroplane that you all have but the principles are the same when setting up your system and how and what px are there. so if its read directly via px line or electrical via a transducer it still reads wf as a measurement of px unless you are using a spool/vane inline unit.