Patent US3930398A successfully refreshed from Google Patents.
US3930398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for continuous temperature measurement of dew point of flue gases
Assignee: Individual
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Filing: 1972-07-17
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Granted: 1976-01-06
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Expires: 1992-07-17
Abstract
Abstract A device for continuous temperature measurement of the dew point of flue gases, in which the signal of the sensitive unit, carrying information on the appearance of a condensate film on the condensation surface of the dew point temperature transmitter, is applied simultaneously to the regulator of the heating element and the regulator of the cooling element. Both of these are included in the condensation surface temperature control unit, wherein temperature control of the condensation surface is attained by the heating and cooling means operating simultaneously. The transmitter is provided with heating and cooling means.
Inventors
- 👤 Tatyana Abramovna Levina
- 👤 Mikhail Borisovich Serkh
- 👤 Ivan Georgievich Guzynin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:52
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/56; G01N25/66; G01N25/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
213 words
A device for continuous temperature measurement of the dew point of flue gases comprising in combination, a dew point temperature transmitter having a condensation surface; means for heating said transmitter, said heating means being located under said condensation surface; means for cooling said transmitter and applied to said condensation surface; s sensitive unit of said transmitter located on said condensation surface thereof; electrodes of said sensitive unit; a thermo-electric element of said sensitive unit; a unit for controlling the temperature of said condensation surface and comprising a heating regulator connected electrically to said electrodes and said heating means, and a cooling regulator connected electrically to said electrodes and said cooling means, a signal from said electrodes carrying information about the formation of a condensate film of flue gas on said condensation surface being applied simultaneously to said heating and cooling regulators, a signal from the output of said heating regulator being directly proportional to the thickness of the condensate film, and a signal from the output of said cooling regulator being inversely proportional to the thickness of said condensate film; and a register electrically connected to said thermo-electric element and adapted to register the condensate surface temperature that is maintained equal to the dew point temperature by said heating and cooling regulators simultaneously.
Claim 2
Independent Claim
213 words
A device for continuous temperature measurement of the dew point of flue gases comprising in combination, a dew point temperature transmitter having a condensation surface; means for heating said transmitter, said heating means being located under said condensation surface; means for cooling said transmitter and applied to said condensation surface; s sensitive unit of said transmitter located on said condensation surface thereof; electrodes of said sensitive unit; a thermo-electric element of said sensitive unit; a unit for controlling the temperature of said condensation surface and comprising a heating regulator connected electrically to said electrodes and said heating means, and a cooling regulator connected electrically to said electrodes and said cooling means, a signal from said electrodes carrying information about the formation of a condensate film of flue gas on said condensation surface being applied simultaneously to said heating and cooling regulators, a signal from the output of said heating regulator being directly proportional to the thickness of the condensate film, and a signal from the output of said cooling regulator being inversely proportional to the thickness of said condensate film; and a register electrically connected to said thermo-electric element and adapted to register the condensate surface temperature that is maintained equal to the dew point temperature by said heating and cooling regulators simultaneously.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |