Apparatus for controlling the temperature of a liquid body
US4013038A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1975 |
| Grant date | Mar 22, 1977 |
| Priority date | — |
| Expiry date | Jul 21, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/19
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for controlling the temperature of an open liquid body when actual measurement of that temperature is not possible. A thermal analog of the liquid body, which is exposed to the same heating or cooling source as the liquid body, is incorporated into a sensor which provides controlling feedback to the heating or cooling source. The sensor, which is disposed in the atmosphere which surrounds or flows by the liquid body, includes a dry element and a wet wick, body of which are in thermal contact with a temperature sensing element. The dry element senses the temperature of the atmosphere and the wet wick has a cooling effect on the sensing element that is related to the rate of evaporation of liquid from the body. This sensor is advantageously employed in a system for regulating the temperature of a reagent film on a microscope slide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.