Patent ID: 11874221
Assignee: YOKOGAWA ELECTRIC CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method comprising:
controlling an optical source to emit optical radiation into an interior, of a container, the interior containing a liquid,
wherein the optical source is located outside of the container, and
wherein the optical radiation comprises radiation at a wavelength that conforms to a dissolved oxygen absorption band, the wavelength being in the infrared spectrum;

generating optical measurements, the generating being by a photodetector that is located outside of the container but that is in optical communication with the liquid in the interior of the container, and the optical measurements including at least one optical measurement that is based on detection of luminescent light that is emitted by dissolved oxygen in the liquid and that is emitted from luminescence of the dissolved oxygen in the liquid, the luminescence being induced by the optical radiation; and
analyzing the optical measurements to determine whether the liquid contains dissolved oxygen.