Reliability - Calibration is a Curve
Tip 50: When an "approved instrument" is calibrated at the factory, the manufacturer doesn't simply adjust the electronics in the instrument to one concentration of ethyl alcohol. The electronics in a new instrument must be tweaked (using a screwdriver pre-2000 and software post-2000) so that electrical signals coming from the detector and other circuitry are accurately and precisely read by the instrument's software to output values corresponding to ethyl alcohol values of m