| 摘要 |
PURPOSE:To control the concentration of laver well and to raise the accuracy extremely high, by fixing the cycle time of intermittent drive and the reading time of concentration measurement in such a way that they are related to the time constant of stirring. CONSTITUTION:A blender is provided with a laver feed machanism, a water feed mechanism, a blending tank, a stirring machanism for a blend solution in the blending tank, a concentration detecting machanism, a detector for the liquid level in the blending tank, a mechanism for charging and discharging water to control the concentration of the blend solution, and the regulator 13A for controlling the concentration. In the blender, the cycle type Tt of intermittent drive for the mechanism for charging and discharging water and the reading time TR of concentration measurement are fixed in such a way that they are related to the time Tb, which starts at the water charge or discharge from the blend solution in the blending tank and finishes at the stabilization of the concentration of the blend solution in the blending tank. Consequently, the concentration control with good controlling characteristics and high controlling accuracy can be carried out. |
