Measuring and testing – Volume or rate of flow – Weir type
Patent
1989-11-06
1991-06-18
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
Weir type
162198, G01F 120
Patent
active
050240846
ABSTRACT:
A testing device for determining the amount of liquid having been doctored through the Fourdrinier fabric or wire at the wet end of a Fourdrinier-type paper machine. Included is a pick-up for insertion beneath the foil blades of the paper machine, having an opening for insertion into the stream of the liquid being doctored from the pulp. A container is connected in liquid communication with the pick-up. A weir is positioned within the container to divide the container into a collection well upstream from the weir and a discharge well downstream from the weir. The container includes a still well positioned in liquid communication with the collection well. A proximity sensor is provided, and positioned with respect to the still well to sense the level of liquid in the still well. A microprocessor controlled display is provided for receiving a signal from the proximity sensor and displaying a flow rate based on the level of the liquid in the still well. The size and shape of the weir opening, and of the pick-up opening, are adjustable to bring the flow rate through the device into a suitable range for purposes of the display.
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Appleton Specialty Products Inc.
Goldstein Herbert
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