The Endress Hauser FDU91-RG1AA is a reliable ultrasonic level and flow sensor designed to handle a range of industrial applications. Known as the Prosonic S FDU91, this sensor operates effectively in process temperatures from -40 to +80 degrees Celsius, making it suitable for various challenging environments. It can measure liquid levels up to 10 meters and solids up to 5 meters, with a process pressure tolerance between 0.7 and 4 bar absolute. The device includes a 5-meter (16-foot) cable and features a standard ISO228 G1 threaded connection. This particular model does not include a built-in heater. Distributed by BSP Automation, the FDU91-RG1AA combines robust design with precise ultrasonic measurement technology, supporting accurate monitoring in many industrial settings.