The FPG8601 uses a precision load cell to measure the force resulting from the pressure across its piston-cylinder. In normal operation, the only adjustments to the load cell that are necessary to maintain in tolerance measurements is to zero and span using the built in tools. The linearity of the load cell is set at the factory and cannot be adjusted by the user. If a linearity problem with the load cell is suspected, it can be verified by loading masses directly onto the load cell throughout its operating range. This allows the load cell to be verified independently of the behavior of the FPG8601 piston-cylinder and without requiring a precision pressure reference.
A spreadsheet is provided to facilitate the linear regression of the verification data.