Burner Alignment
In
order to make sure that burner is correctly aligned check that the slot in the
burner head is parallel to, and slightly below the sample beam. This procedure will only need to be carried
out when changing burner heads.
1. In the
control panel, set the SIGNAL control knob to
ABS and the MODE control to continuous. Press the AZ
(auto zero) key to set the display to zero.
2. Raise the
burner head with the VERTICAL ADJUST KNOB
until an absorbance is indicated on the display.
3. Slowly lower
the burner head with the vertical adjust until it’s just below the source beam.
The display must be at zero.
4. Ignite gases
as describe in the GAS IGNITION section.
5. Aspirate a
standard that provides an absorbance of 0.2 to 0.6 units and adjust the
position of the burner head by turning the HORIZONTAL
ADJUST KNOB until maximum absorbance is indicated.
6. Turn the ROTATIONAL ADJUST KNOB to obtain maximum
absorbance.