Body tipping and weight
A body tipping sensor shows where and when the tipper unloaded. If the body was raised away from the field and away from the intake point, that is an event to be looked into. Fitting is covered on the tilt angle sensors page.
For accurate control of mass, axle load sensors are fitted: they show that the vehicle left the field loaded and arrived at the intake with the same weight. There is more in the section on fitting axle load sensors.