The present invention discloses a liquid-level control system for crystallizer of conticaster. Said invented system includes crystallizer, support, liquid-level sensor, driver, controller, digital electric cylinder, stopper mechanism, press bar and hand-held controller. The above-mentioned devices are formed into a closed loop system by using digital signal and by means of control system to trace and control the change of liquid level accurately at all times. Said invented system adopts digital control technique, has no hydraulic and clutch mechanism, so that it is simple and reliable in structure, rapid in response rate, high in control accuracy, low in cost and energy consumption and safe in use. |