Method and device for tuning optical measurements on continuously mixed reactors

A method for tuning (8) optical measurements on continuously mixed reactors (1),

• wherein a reactor content (2) of the reactor (1) has at least one optically detectable measured variable,
• wherein at least one optical measuring arrangement (3) can carry out optical measurements of at least one of the optically detectable measured variables,
• wherein at least one optical measurement is to be tuned to a form, distribution, or movement state of at least one phase (2A, 2B) of the reactor content (2),
• wherein mixing the reactor content (2) causes local changes in the permittivity within the reactor (1),
• characterized in that,
• a local permittivity is detected at at least one location having a known distance from the at least one optical measuring arrangement (3) to be tuned based on a permittivity signal (6), and
• the detected permittivity signal (6) of at least one location having a known distance from the at least one optical measuring arrangement (3) to be tuned is used to tune at least one optical measurement to the form, distribution, or movement state of the reactor content (2).