Load cell is based on strain gauges and the principle of Wheatstone bridge.A load cell is a sensor that converts force or weight into a measurable electrical output, the most common output signal is mV/V.

The rated capacity is the maximum recommended load for a particular load cell. All load cells have a range of loads where the output signal is proportional to the load; that is the deformation of the strain gauge caused by the load produces an output signal having an approximately linear relationship to the strain. By keeping the rated capacity in this range, the strain gauge produces outputs within the errors printed on the accompanying load cell data sheet.

① Load Cell: A device which produces an output signal proportional to the applied weight or force. ② Natural Frequency: The frequency of free oscillations under no--load load conditions. ③ Nonlinearity: The maximum deviation of the calibration curve from a straight line drawn between the no--load an

① Creep Recovery The change in no--load output occurring with time after removal of A load which had been applied for a specific period of time. Usually measured over a specific time period immediately following removal of rated load and expressed as a percent of rated output over a specific period of time. ② Deflection The change of length along the primary axis of the load cell between no--load and rated load conditions. ③ Drift A random change in output under constant load conditions.