A force sensor used on the instrument. It can be applied to the measured object gravity by a certain percentage into a measurable output signal. Considering the influence of gravity acceleration and air buoyancy on the conversion of different use sites, the performance indexes of the load cell mainly include linearity error, hysteresis error, repeatability error, creep, zero temperature characteristic and sensitivity temperature characteristic. In a variety of weighing and quality metering systems, the integrated error is often used to comprehensively control the sensor accuracy and to correlate the error band with the instrument error in order to use a load cell corresponding to an accuracy meter.