Answer / solomon

Dry leg calibration and Wet Leg Calibration are used for
closed and pressurized vessels level measurement.
Difference:
Wet leg calibration is used for vapourised liquid(which
will be condensated by atmosphere)level.In LP side
Tapping ,liquid filled .
Dry leg calibration for the liquid under pressurised
condition which will not be condensated.

Answer / spencer

Dry leg is where the low pressure side is vented to ATM.,
and the vessel is open to ATM. Wet leg is where the vessel
is closed and the low side is connectd to the top bridle.
With each type the "legs" wil be filled with an inert fluid
with a higher density then the fluid in th evessel all has
to be taken into consideration when calibrating
instruments. I can normally hit a percent error of 1
%. Hope this helped the guy has no idea what he is talking
about.

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