Quote: (Originally Posted by paulraymaekers)
Hello,
the Meg at 200: handsets and batt compartment were filled up with oil... to resist the high pressure.
??has anyone idee how much the pressure inside increases??
I suppose not the whole pressure increase is transmitted inside the housing, as the housing also resists to deformation, and will take up part of the pressure, unless there is a 'flexible' part in the housing.
?? can LCD's and batteries take up high pressure increase??
regards
paul
Oooooo , Good Question!
I've wondered about how this practice works out in reality myself.
I would assume that it's hard to not have at least some small air space still left, and that deformation of the cases would be on the order of a few cubic millimeters, as the air is going to compress with deformation and act as a resisting force proprtional to the amount of deformation.
If all it does is to absorb some deformation, then the electronics may only be subjected to a pressure much less than the actual ambient.
With a slowly rising pressure, I'd think the oil may migrate into any air spaces, as opposed to just crushing components. How that may effect the component values thereafter, (hence accuracy of the instrument) would need to be checked often.
It would seem, impirically, that lcds and batteries can withstand at least some marked pressure above atmospheric.
How much pressure above atmospheric, and for how long, is probably the big unknown.
Darlene