| 摘要 |
PURPOSE:To enable to prepare and feed diluted nutrient solutions respectively optimal for plural different cultivation media by detecting the levels of the solutions with electrodes capable of being freely moved with a microcomputer in the preparation of the diluted nutrient solutions to be fed into the cultivation media. CONSTITUTION:Electrodes [a liquid level-detecting means DF and a diluted nutrient solution-preparing, feeding or stopping means (a mixing tank C)] having driving means for freely changing the positions of the electrodes with the output signals of a microcomputer is brought into contact with liquids to detect the liquid levels and the detected signals are fed into the microcomputer. Thus, diluted nutrient solutions having different components in different mixing ratios and amounts are continuously automatically effectively fed in plural independent media or same media at the most necessary times and data such as the feeding times for the media, feeding periods, the components of the diluted nutrient solutions, mixing ratios and amounts are recorded and treated, thereby permitting to prepare a support software required for a complex environmental control system. |
