Direct-heated gas-flow measuring apparatus
US4735099A · kind A · utility
6Cited by
15References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1986 |
| Grant date | Apr 5, 1988 |
| Priority date | — |
| Expiry date | Nov 24, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/698
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A direct-heated gas-flow measuring apparatus including a measuring tube disposed in the gas stream, a film resistor for generating heat and detecting the temperature thereof, and a feedback control circuit for controlling the heat generated by the film resistor so that the temperature of the film resistor is a predetermined value. Provided in a supporting portion of the film resistor for supporting it to the measuring tube is an aperture for throttling the heat transfer thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.