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Patient scales that include separate (e.g., four) transducer units (cells or pods) connected to a central unit that contains the electronic circuitry for weighing, the controls (e.g., for taring), and a display. The individual units with the transducers fit under the legs of a bed, stretcher, crib, chair, or platform. These scales usually have a total weighing capacity of up to 450 to 600 kg (1,000 to 1,300 lb) and an accuracy of 100 g (0.25 lb) in patient weighing; most of them can measure and display changes in patient weight up to several kilograms, with accuracy of 10 g (0.025 lb). Modular transducer patient scales are used to weigh patients when they are bedridden, disabled, weak, under dialysis procedures, or in other situations where they cannot stand on a conventional scale.
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