US4003240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calibration device for vaporized liquids
Assignee: DANIEL ELECTRONICS INSTRUMENTATION
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Filing: 1975-06-13
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Granted: 1977-01-18
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Expires: 1995-06-13
Abstract
Abstract A calibration device having a thermally insulated storage receptacle for a liquid to be analyzed. The liquid is converted to a vapor form by passing a carrier gas through the liquid to be analyzed whereby the carrier gas is saturated with the liquid. The partial pressure of the liquid vapor in the gas is the function of the temperature of the liquid and the pressure of the saturated carrier gas. The saturated carrier gas is applied to the sample inlet of a vapor phase analyzer by a sample transport line that is maintained above the dew point of the saturated carrier gas. Since the concentration of the calibration liquid in the carrier gas can be precisely calculated by measuring the liquid temperature and the pressure of the saturated carrier gas, the response of the analyzer can be calibrated to this known concentration while maintaining the liquid to be analyzed in a liquid state.
Inventors
- 👤 Damien E. Durbin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:55
CPC Classifications
G; G01; G01N; G01N7/00; G01N33/00; G01N33/0004; G01N33/0009; G01N33/0011
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
86 words
A vapor phase analyzer system comprising thermally insulating means for storing a liquid to be analyzed, inlet means for introducing a carrier gas into the liquid to be analyzed in said insulating means, vapor phase analyzer means, outlet means for applying a saturated carrier gas leaving the liquid to be analyzed to said analyzer means, temperature sensor means for measuring the temperature of said liquid to be analyzed within said thermally insulating means, and pressure sensor means for measuring the pressure of said saturated carrier gas.
Claim 2
Dependent Claim
86 words
A vapor phase analyzer system comprising thermally insulating means for storing a liquid to be analyzed, inlet means for introducing a carrier gas into the liquid to be analyzed in said insulating means, vapor phase analyzer means, outlet means for applying a saturated carrier gas leaving the liquid to be analyzed to said analyzer means, temperature sensor means for measuring the temperature of said liquid to be analyzed within said thermally insulating means, and pressure sensor means for measuring the pressure of said saturated carrier gas.
Claim 3
Dependent Claim
30 words
A vapor phase analyzer system as set forth in claim 1 wherein said inlet means includes a heat exchanger within said thermally insulating means above the liquid to be analyzed.
Claim 4
Dependent Claim
57 words
A vapor phase analyzer system as set forth in claim 2 wherein said inlet means includes a gas diffuser located within said liquid to be analyzed and said outlet means includes a thermally insulated gas line for maintaining the saturated carrier gas above its dew point between said thermally insulating means and said vapor phase analyzer means.
Claim 5
Dependent Claim
41 words
A vapor phase analyzer system as set forth in claim 3 wherein said thermally insulating means includes a vacuum bottle and bottle cap means for sealing said bottle while admitting said inlet means, said temperature sensor means and said outlet means.
Claim 6
Independent Claim
59 words
The method of operating vapor phase analyzer system including the steps of storing a liquid to be analyzed within a thermally insulated container, passing a carrier gas through the liquid, guiding a carrier gas leaving the liquid to a vapor phase analyzer, measuring the temperature of the liquid and measuring the pressure of the carrier gas leaving the liquid.
Claim 7
Independent Claim
59 words
The method of operating vapor phase analyzer system including the steps of storing a liquid to be analyzed within a thermally insulated container, passing a carrier gas through the liquid, guiding a carrier gas leaving the liquid to a vapor phase analyzer, measuring the temperature of the liquid and measuring the pressure of the carrier gas leaving the liquid.
Claim 8
Dependent Claim
28 words
A method as set forth in claim 5 and including the further step of passing the carrier through a gas diffuser before the carrier gas enter the liquid.
Claim 9
Dependent Claim
34 words
A method as set forth in claim 6 and including the further step of passing the carrier gas through a heat exchanger located above the liquid before the carrier gas enters the gas diffuser.
Claim 10
Dependent Claim
82 words
A carrier gas saturating device comprising thermally insulating means for storing a liquid to be analyzed, inlet means for introducing a carrier gas into the liquid to be analyzed in said insulating means, outlet means for applying a saturated carrier gas leaving the liquid to be analyzed to an outlet port, temperature sensor means for measuring the temperature of said liquid to be analyzed within said thermally insulating means, and pressure sensor means for measuring the pressure of said saturated carrier gas.
Claim 11
Dependent Claim
82 words
A carrier gas saturating device comprising thermally insulating means for storing a liquid to be analyzed, inlet means for introducing a carrier gas into the liquid to be analyzed in said insulating means, outlet means for applying a saturated carrier gas leaving the liquid to be analyzed to an outlet port, temperature sensor means for measuring the temperature of said liquid to be analyzed within said thermally insulating means, and pressure sensor means for measuring the pressure of said saturated carrier gas.
Claim 12
Dependent Claim
69 words
A carrier gas saturating device as set forth in claim 8 wherein said inlet means includes a heat exchanger within said thermally insulating means above the liquid to be analyzed and a gas diffuser located within said liquid to be analyzed and said outlet means includes a thermally insulated gas line between said thermally insulated means and said port for maintaining said saturated carrier gas above its dew point.
Claim 13
Dependent Claim
42 words
A carrier gas saturating device as set forth in claim 9 wherein said thermally insulating means includes a vacuum bottle and a bottle cap means for sealing said bottle while admitting said inlet means, said temperature sensor means and said outlet means.
References Cited (Backward Citations)
US3592060A
Cited
US3824836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |