Method and apparatus for aligning a mirror of a carbon in fly ash sensor

This invention relates to sensors that measure the Carbon content of the fly ash produced by the combustion process in a pulverized coal-fired steam generator and more particularly to the alignment of the mirrors used in such a sensor. A method and apparatus for aligning the axis of a mirror of a carbon in ash sensor. The method first executes a series of steps that causes a stepper motor connected to an axis of the mirror to move the mirror through a first coarse alignment procedure and then executes a second series of steps that that moves the mirror through a second fine alignment procedure.