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Ring Torsion load cells; used in high accuracy hoppers, silos, platforms and pallet scales. Spoke Type load cells; used in low profile, high precision application. High forces varying from 1t-500t. Onboard load cells; used for onboard weighing systems on trucks, tractors and other vehicles.
Load-cell scales are based on electronic load cell transducers, and can be mechanical or strain-gauge. There is a wide variety of scale types that can be built with load cell technology. For example, in vehicles with spring suspension, payload scales commonly use load cells.
This kind of system charges an inductive coil, effectively floating the weigh bed in an electromagnetic field. When the weight is added, the movement of a ferrous material through that coil causes a fluctuation in the coil current proportional to the weight of the object. Other technologies used include strain gauges and vibrating wire load cells.
The mass measured by the load cells is integrated with the belt speed to compute the mass of material moving on the belt, after allowing for the mass of the belt itself. [3] Belt weighers generally include the necessary electronics to perform this calculation, often in the form of a small industrialized microprocessor system.
A silo (from Ancient Greek σιρός (sirós) 'pit for holding grain') is a structure for storing bulk materials. Silos are commonly used for bulk storage of grain, coal, cement, carbon black, woodchips, food products and sawdust. Three types of silos are in widespread use today: tower silos, bunker silos, and bag silos.
Strain gauges are used to measure the flexure in bending plates and the deformation in load cells. The strip sensor systems use piezo-electric materials in the groove. Capacitive systems measure the capacitance between two closely placed charged plates. [41] More recently, weighing sensors using optical fiber grating sensors have been proposed.
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