Post Correcting a Level Reference in a Data File - Technical Note

In-Situ Inc. pressure sensors can output level data in three modes based on a pressure measurement. These modes include Depth, Level Surface Elevation, and Level Depth to Water. Level Surface Elevation and Level Depth to Water modes calculate level using a reference point that is either set when the sensor is programmed or when the instrument begins to log data. The reference that is set records a value, called Pressure Head at Reference, and all readings are relative to this value.