Accurate weight totalization requires that material velocity matches belt velocity. This may require that the scale be located a considerable distance from the loading point on a steeply inclined, high velocity systems handling certain materials. Conveyor length should not exceed that which assures that the belt will travel at least 3 circuits while delivering the minimum totalized load for which accurate weight information is required. All idlers should be of ridgid frame construction with a horizontal roller section. There shall be no tripper or moveable head pulleys in the conveyor.
Straight conveyors are preferable to curved conveyors.
Convex curves are permissible at a distance of 20 feet or 5 idler spaces beyond the scale. Calibration a. Weighed Load Test 2. Simulated Load Testing a. Roller Test Chain b. Static Test Weights c. Electronic Calibration Material test using a truck scale as the reference scale Material test using static hopper scale Weighed Load Test Advantages 1.