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A load cell is a transducer that converts a mechanical force or load into an electrical output signal. Metal foil strain gauges are bonded onto a flexure or structural member that deforms when weight or load is applied. In most cases, four metal foil strain gauges are used to obtain maximum sensitivity and temperature compensation. Two of the gauges are usually in tension, and two in compression, all four strain gauges are wired in a Wheatstone bridge configuration with compensation adjustments that correct for temperature errors.