Calibration of dust monitoring instruments

Details Calibration of dust monitoring instruments Calibration of dust monitoring instruments

1977-01-14

1980-04-08

Corbin, John K.

Optics: measuring and testing

For light transmission or absorption

Of fluent material

250252, 250573, G01N 2128

Patent

active

041970136

ABSTRACT:
Disclosed is a method and apparatus for calibrating and recalibrating a photometric measurement instrument which supervises the presence of dust in a particular location as produced by a process during which dust is developed on an irregular basis. The method is characterized in that the calibration is initiated upon the detection of a condition in which dust concentration is expected to be low. In a steel-making process, such a condition occurs upon termination of the blowing phase of a converter. In the case of smoke in a flue, such a condition occurs when there is an absence of gas flow in the flue.

REFERENCES:
patent: 2244507 (1941-06-01), Thomas
patent: 3885162 (1975-05-01), Geertz
patent: 4126396 (1978-11-01), Hartmann et al.

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