thanks for reply
in fact i supposed to use MPX5100 but didn't find it on market so, i found MPX2200dp
i think schematic of MPX5100 was clear to me and it works greatfully on simulation , i use MPX sensor to mesure atmospheric pressure
just to see its influence on pv system (also i mesure current ,voltage , temperature and solar radiation )
so, do i need to use instumentation aop ? then how value will be calculated ?
if its possible show me a schematic !!plz
thanks