Apparatus and method for automatically replenishing liquid and measuring the rate of evaporation of a liquid
US4418576A · kind A · utility
10Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 21, 1983 |
| Grant date | Dec 6, 1983 |
| Priority date | — |
| Expiry date | Jun 21, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A90/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An evaporimeter formed of a capillary tube hydraulically coupled to a sheet of filter paper to form a capillary system establishing hydraulic continuity of liquid between the tube and the surface of the filter paper is automatically replenished with the liquid as the liquid evaporates. The rate of evaporation from the surface of the filter paper of a liquid, such as water, in the tube and filter paper is automatically measured using a photoelectric sensor as the air-liquid interface moves upwardly in the tube as the water is drawn from the tube to replace the evaporated water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.