The Operating Terminal (OT) and the Remote Operating Terminal (ROT) are flexible evaluation units for the Anton Paar Smart Sensors used in viscosity measurement (L-Vis 510) for dynamic and kinematic viscosity and in CO2 measurement for beverages (Carbo 510) such as beer, wine or FABs. The OT is directly mounted on the Smart Sensor, the ROT and the Smart Sensor are separated units with a distance of up to 250 m. The OT and ROT provide several interfaces for external communication.