#$%^&*AU2013228017A120140403.pdf#####Abstract of the Disclosure TANK COMMIDITY VOLUME MEASUREMENT APPARATUS AND METHOD An apparatus and method for measuring the quantity of material in a tank such as a commodity air cart of an air seeder in which a sensor or sensors are used to measure the distance to the surface of the material, The distance data is then used to determine a surface profile of the material from which the volume of material 10 is calculated. The volume is converted to weight using known material density information,3/4 50 50 50 FIG. 4 56 Controller 58 FIG. 5 60 8 41 8 / \\ 62 62 44 62 - -* - 42 14
