| 摘要 |
PURPOSE:To detect an empty level without an empty level detector and simplify the level setting by comparing a value obtained by subtracting the discharged volume of a stored object from the filled level detected by a filled level detector attached to a storage bottle with the set value. CONSTITUTION:A filled level signal SM from the filled level detector of an intermediate storage bottle 31 is sent from a counter control panel 80 to a computer system 90. A command outputted from the computer system 90 starts the feeding of concrete materials from a storage bottle 30 to a counter 40. An operating control part 84 starts the subtraction of feeding volume XR from a filled level from the moment that the signal SM is erased, and when the difference is reduced lower than the stored set value, the feeding is stopped through a power panel 102. Thus, the empty level can be detected without the empty level detector in the storage bottle 30 and the level setting also is easily performed. |
