The Flexim PIOX R721 is a specialized transmitter for demanding refractometer applications. With ATEX, IECEx and FM certification it enables operation of both the transmitter and R500 sensor in hazardous conditions. Expanding the functionality of the R532, it offers multiple communication options and upgraded processing, allowing for the combination of several inputs and outputs to obtain additional analytic measurements. The integrated high-power processing can provide detailed analysis of multicomponent liquids based on these values.