Spectrophotometer gas control system
AssigneeThe Perkin-Elmer Corporation
InventorCharles M. Wittmer
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Abstract
This invention relates to a spectrophotometer which includes a burner adapted for burning a gaseous fuel and for atomizing a sample to be analyzed in a burner compartment, mechanical elements or electrical circuitry serving to periodically pass a beam of light through the burner compartment, a detector, electrical circuitry for energizing the detector during the period of absence of the beam of light through the burner compartment, said detector being adapted when energized to produce an electronic signal representative of the presence of a flame in the burner compartment; and control elements responsive to the electronic signal for controlling the feeding of fuel to the burner.
Claims6
A spectrophotometer comprising, in combination:
- a burner for burning a gaseous fuel and for atomizing a sample to be analyzed in a burner compartment;
- means for periodically passing a beam of light through the burner compartment;
- a detector;
- means for energizing said detector during the period of absence of said beam of light through said burner compartment;
- said detector being adapted when energized to produce an electronic signal representative of the presence or absence of a flame in said burner;
- and
- means responsive to said electronic signal, for controlling the feeding of the fuel to said burner.
Dependencies are inferred from the claim text.