Safety apparatus for an atomic absorption spectrometer burner

Details Safety apparatus for an atomic absorption spectrometer burner Safety apparatus for an atomic absorption spectrometer burner

2005-07-05

2005-07-05

Evans, F. L. (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

Reexamination Certificate

active

06914673

ABSTRACT:
A burner assembly and a gas box for an atomic absorption spectrometer are disclosed. The burner assembly has a spray chamber (12) for receiving oxygen, fuel and sample material and a burner (11) located on the spray chamber for receiving the mixture so the mixture can be ignited to produce a flame to facilitate analysis of the sample material by atomic absorption of radiation. Pressure transducer (30) is provided for measuring the pressure in the spray chamber so that the pressure is not of a predetermined level the burner can be shut off. A fuel line (29) supplies fuel to the spray chamber (12) and an airline (28) supplies air to the chamber (12). The lines (28) and (29) include flow restrictors (38) and (54) creating an accurate pressure drop thereby ensuring correct mixture of air and fuel.

REFERENCES:
patent: 4568267 (1986-02-01), Kendall-Tobias
patent: 4640677 (1987-02-01), Huber
patent: 182258 (1986-05-01), None
patent: 1822948 (1993-06-01), None

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