Apparatus and method for detecting characteristics of a working fluid
US5335513A · kind A · utility
9Cited by
12References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 19, 1993 |
| Grant date | Aug 9, 1994 |
| Priority date | — |
| Expiry date | Jan 19, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/24
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A heat transfer system includes a high side pressure sensor in the form of a temperature dependent resistance in heat exchange with the system working fluid to locally heat the fluid in response to a control signal. Control means are provided for applying the control signal to the resistance and detecting a minimum thermal resistance between the thermistor and the working fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.