Device for detecting air in fluid conducting tubing
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United States of America Patent
Stats
-
Apr 27, 1993
Grant Date -
N/A
app pub date -
Oct 15, 1991
filing date -
Oct 17, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for detecting air in large bore thin walled transparent tubing, including a body providing accommodation for the tubing; an LED in a passage body for transmitting light energy towards the tubing; a phototransistor mounted in an orthogonally extending passage for receiving light transmitted by LED and modified by changes in the constituency of fluid passing through tubing; and an optical spacer in the form of a slotted collar of material optically matched to the material of tubing occupying space between LED and the tubing and phototransistor.
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