technical term, but I'm pretty sure that in
Scaling pressure sensor at inlet
Scaling pressure sensor at outlet
Scaling conductivity reading"
"scaling" means that these devices can show their reading in different "scales" as in "à des échelles différentes" i.e. these devices can do the "scaling=change of scale" of their output so that their reading can be directly displayed without any further conversion.
The fact that these "scaling sensors" are used in a descaler is just a big fat red herring / a nasty trap for the unwary ...
just look at what's on offer if you search to buy a "Scaling pressure sensor" and what kind of specs go with these devices ...
ALSO, there is not supposed to be any "scale = tartre" inside a descaler, so I can't see how you could measure "la pression du tartrage", even if that term made sense.
one example of "Scaling Pressure Sensor" that has nothing to do with "scale = tartre":
Negative Pressure Specification
For Virology..
look for
"805 x 505 jpeg 75kB |
Scaling Pressure Sensor | AVR Freaks"
nowhere any mention
whatsoever of any "scale = tartre"
http://hpssociety.info/news/negative-pressure-specification-...