Arrangements for measuring the height of a layer of floating liquid
US5572326A · kind A · utility
Inventors
Key dates
| Filing date | Nov 10, 1993 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Nov 10, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/292
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An arrangement for the measurement of the height of a layer of a first liquid floating on a second liquid which comprises projection means for projecting a beam of optical radiation along an inspection path which is horizontal when the arrangement is in use, detector means for detecting radiation of the said beam after transmission along the inspection path, means for providing relative displacement in a direction which is vertical when the arrangement is in use between the said layer and the said inspection path whereby the said layer traverses the inspection path, the detector means being capable of observing the upper and lower surfaces of the said layer by detecting changes in an optical transmission property of the said beam occurring at the said surfaces and means for measuring the said relative displacement between the locations of the observed upper and lower surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.