The distance from the wall after using the formula is the minimum distance allowable from the side wall based on the height of the tank.
To prevent the bouncing of the echo from the tapered bottom a Minimum Level can be set so there is a perpendicular reflection.
If it’s not possible to have a minimum level in a tank then you can use the Loss Of Echo function found in the TOOLS menu.
Either set the Loss of Echo for 2 mA or 22 mA depending on the full tank calibration setting.
