Glossary

Best straight line

Symbol

BSL

A line midway the two parallel straight lines closest together and enclosing all output versus measurand values on a calibration curve. In addition, it must pass through the zero point based on the assumption that zero measurand results in zero output signal.

Best straight line

Note: The slope of this center line corresponds to the sensitivity of the sensor. Half the distance between the two parallels (measured in the ordinate direction) is the linearity.