Device for detecting air in fluid conducting tubing
US5206522A · kind A · utility
76Cited by
6References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1991 |
| Grant date | Apr 27, 1993 |
| Priority date | — |
| Expiry date | Oct 15, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/255
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.