Document Type and Number:
Japanese Patent JPS5114055
Kind Code:
A
Abstract:
The invention provides an automatic weighing machine for weighing out a predetermined quantity of fluid materials into a container. The machine includes a fluid material valve of the downward delivery type comprising a closure member having a plurality of selectable positions corresponding to different flow rates through the valve. A weighing control system is adapted to control the valve so as to dispense an appropriate weight of fluid material into the container in accordance with a predetermined program. The control system comprises one or more load cells arranged to provide an electrical output dependent upon the weight of the container plus its contents, and a comparator for comparing the signal from the load cell or cells with a predetermined target weight to be achieved in accordance with the program whereby to provide an electrical error signal instantaneously representative of the additional weight of fluid material to be dispensed. A control means sequentially adjusts the valve to lower flow rate positions in dependence upon both the magnitude of the error and the rate of change of the error.
Inventors:
TOOMASU UIRIAMU UIRUSON
MAIKERU JONSUTON TOTSUPUHAMU
MAIKERU JONSUTON TOTSUPUHAMU
Application Number:
JP7421375A
Publication Date:
February 04, 1976
Filing Date:
June 18, 1975
Export Citation:
Assignee:
TOOTAL LTD
International Classes:
G01G19/30; G01G13/285; G01G13/29; G01G13/295; G01G19/22; G01G19/38; (IPC1-7): G01G13/00