Gas bubble detector
US5455423A · kind A · utility
57Cited by
5References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1993 |
| Grant date | Oct 3, 1995 |
| Priority date | — |
| Expiry date | Aug 25, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/85
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas bubble detector having a modulated IR source focused through a bandpass filter onto a venturi, formed in a sample tube, to illuminate the venturi with modulated filtered IR to detect the presence of gas bubbles as small as 0.01 cm or about 0.004" in diameter in liquid flowing through the venturi. Means are provided to determine the size of any detected bubble and to provide an alarm in the absence of liquid in the sample tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.