Measurement errors can be caused by many factors

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      Why is it important to calibrate load cells and torque sensors?

      A weighing transducer calibration is an adjustment or set of corrections performed on a load cell or instrument (amplifier) ​​to ensure that the sensor operates as accurately or error-free as possible.

      Every weighing transducer is prone to measurement errors. These structural uncertainties are simple algebraic differences between the value indicated by the sensor output and the actual value of the measured variable or a known reference load. Measurement errors can be caused by many factors:

      Zero offsets (or zero balance of load cell)

      Linear (or non-linear)

      Hysteresis

      Repeatability (or non-repeatability)

      Temperature shift span and zero position

      Each pressure load cell has a "characteristic curve" or "calibration curve", which defines the sensor's response to the input. During regular calibration using the load cell calibration machine, we check the zero offset and linearity of the sensor by comparing the sensor output under the reference weight and adjusting the sensor response to the ideal linear output. When the customer requires it to be used in certain critical force measurement applications, the load cell calibration equipment will also check for hysteresis, repeatability, and temperature changes.