An All-Fiber Fabry–Pérot Sensor for Emulsion Concentration MeasurementsPevec, Simon (Avtor) Kunaver, Janez (Avtor) Budinski, Vedran (Avtor) Njegovec, Matej (Avtor) Đonlagić, Denis (Avtor) optical fiber sensorsFabry–Pérot interferometerrefractive indextemperatureemulsion concentrationThis paper describes a Fabry-Perot sensor-based measuring system for measuring fluid composition in demanding industrial applications. The design of the sensor is based on a two-parametric sensor, which enables the simultaneous measurement of temperature and refractive index (RI). The system was tested under real industrial conditions, and enables temperature-compensated online measurement of emulsion concentration with a high resolution of 0.03 Brix. The measuring system was equipped with filtering of the emulsion and automatic cleaning of the sensor, which proved to be essential for successful implementation of a fiber optic RI sensor in machining emulsion monitoring applications.MDPI20232024-02-06 09:36:26Znanstveno delo86997UDK: 535COBISS_ID: 141109507DOI: 10.3390/s23041905ISSN pri članku: 1424-8220sl