drbitboy
Lifetime Supporting Member
by "steam," do you mean small, visible, liquid water droplets above the water level i.e. i.e. the water/vapor interface?... the sensor when not placed over the tube gives stable readings. the only thing we can figure out is that the steam in the tube being seen as the water level. as it goes to the top of the tube, the sensor no longer sees the steam.
by "it," do you mean the water level?
by "no longer sees the steam," do you mean the sensor gives reasonable values?