Dew point hygrometer with continuous balancing system
US4345455A · kind A · utility
9Cited by
10References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1980 |
| Grant date | Aug 24, 1982 |
| Priority date | — |
| Expiry date | Mar 28, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N25/68
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A dew point hygrometer wherein separate reflective surfaces reflect light from separate light sources to a single light sensor. One surface is cooled to develop a coating of condensation. The other surface provides a standard to detect contamination build-up on both surfaces, and to detect variations in the operation of the single light sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.