MASS FLOW METERS/CONTROLLERS AND METHODS HAVING IMPROVED ACCURACY
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United States of America Patent
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Issued Date -
Jul 6, 2023
app pub date -
Mar 13, 2023
filing date -
Jun 19, 2020
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An example method to perform optical measurements involves: emitting a first light beam via a first light source; performing first measurements by detecting the first light beam via a first optical sensor; emitting a second light beam via a second light source; performing second measurements by detecting the second light beam via a second optical sensor, the first and second measurements comprising variable components; performing third measurements by detecting a third light beam emitted from the second light source via a third optical sensor, the third measurements comprising a first steady state component representative of light intensities of the first and second light sources; and compensating a first light output of the first light beam and a second light output of the second light beam by controlling one or more currents to the first and second light sources based on the first steady state component of the third measurements.
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