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AN INTEGRATING COUNTER FOR LIQUID FLOW MEASUREMENT
Author(s) -
Krausman David
Publication year - 1968
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.1968.tb02829.x
Subject(s) - flow (mathematics) , reset (finance) , mechanics , amplitude , representation (politics) , optics , simulation , physics , computer science , politics , political science , financial economics , law , economics
This device provides a graphic representation of liquid flow in much the same manner as does a cumulative recorder. The output is in the form of an ascending staircase voltage, whose amplitude is a direct function of the accumulated number of drops of liquid flow. Reset occurs at exact time intervals which can be varied from 1 to 120 seconds. The flow is formed into tiny droplets by means of a large bore, long taper hypodermic needle. The droplets fall freely interrupting a light beam directed at a highly sensitive photo‐Darlington cell. The electrical portion of the device provides for automatic registry and graphic write‐out of both the event of the drop in the flow and for the integral of the flow over time.