Yokogawa

Single Loop Controllers

Single loop controllers are used in a variety of industrial facilities such as power plants, oil refineries, petrochemical plants, chemical plants, and iron and steel plants.  These controllers receive temperature, flow rate, pressure, and other types of measurement readings from sensors and send corresponding instructions to control elements such as valves in order to maintain these values within a desired range.  Each control loop has its own controller.  Single loop controllers are widely used in industry today to control small plant facilities and serve as back-ups to distributed control systems.