Patent ID: 11953476
Assignee: POLYMER CHARACTERIZATION, S.A.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. A method for obtaining a refractive index measure of a flowing sample liquid, comprising:
generating a beam of light;
receiving a sample liquid in a sample chamber of a measuring cell with inlet and outlet ports for receiving a flowing sample liquid, the measuring cell being arranged such that the beam of light impinges on the sample chamber and is deflected after traversing two non-parallel faces of the sample chamber;
moving a platform to detect the deflected beam of light using an optical sensor mounted on the platform, wherein the optical sensor is a position sensing detector configured to output a signal indicating a relative position of the deflected bean of light with respect to the sensing area;
measuring the displacement of the platform to obtain a platform position;
continuously calculating the deflection of the beam of light from the platform position combined with the relative position of the deflected bean of light on the optical sensor; and
obtaining a refractive index signal over time of the sample liquid using the calculated deflection.