Temperature sensor for determining mass transfer rate and/or temperature rate of a flowing medium
US4498337A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1983 |
| Grant date | Feb 12, 1985 |
| Priority date | — |
| Expiry date | Feb 28, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/692
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thin tantalum foil is sufficiently stable mechanically for supporting a bridge of thin film resistors with a glass insulating layer interposed between them and the foil, while a fluid medium flows past the resistors for measurement of its temperature or for thermal measurement of the rate of flow of the mass of the medium. The resistors form a bridge one half of which is heated to maintain a predetermined temperature for measurement of the rate of flow by means of the heating current, while the other half provides a reference for the regulation of the heating current. A slot in the metal foil between the halves of the bridge provides thermal decoupling between the heated and unheated parts of the bridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.