What does a load cell calibration consist of?
There is no specific standard for load cell calibration except ASTM E74 which is targeted toward the force testing machines. A number of large companies and organizations such as Boeing and the USAF also have standards for load cell calibration. Standards such as ISO 17025 and Z54 lay out guidelines for calibration but do not specifically address load cells. As a result each manufacturer has their own standard of load cell calibration. However a typical calibration will indicate sensitivity while more comprehensive calibration might indicate linearity, error, best fit straight line hysteresis. A more elaborate calibration might calibrate the load cell in tension and compression and might use more data points.
