Patent US5423817A successfully refreshed from Google Patents.
US3924442A
Expired / Lapsed
US
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Pollutant variation correcting system
Assignee: KVB Inc
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Filing: 1973-10-09
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Granted: 1975-12-09
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Expires: 1993-10-09
Abstract
Abstract A system for continuously measuring volumetric concentrations of gas which is automatically self-calibrating and will correct volumetric measurements to a predetermined reference level. This system performs corrections automatically by electronically operating on signals generated by analyzers which are coupled to probes disposed within the sample.
Inventors
- 👤 Stephen E Kerho
- 👤 Claude S Lindquist
- 👤 John R White
- 👤 Bernard P Breen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:51
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/0004; G01N33/0006
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
146 words
A system for monitoring effluent gas and for determining the concentration of at least one gas in said effluent gas at predetermined reference conditions comprising: a. sampling means for sampling said effluent gas and for providing a sample; b. an analyzing means for analyzing said sample to determine the concentration of at least one gas in said sample, and for generating at least a first electrical signal representative of the concentration of a first gas, said analyzing means being coupled to said sampling means; and, c. correcting means for electrically correcting at least said first electrical signal from said analyzing means to a standard reference gas level, said correcting means being electrically coupled to said analyzing means whereby, said corrected electical signal may be displayed or otherwise monitored, so that the concentration level of at least one gas in said effluent gas may be absolutely determined.
Claim 2
Independent Claim
146 words
A system for monitoring effluent gas and for determining the concentration of at least one gas in said effluent gas at predetermined reference conditions comprising: a. sampling means for sampling said effluent gas and for providing a sample; b. an analyzing means for analyzing said sample to determine the concentration of at least one gas in said sample, and for generating at least a first electrical signal representative of the concentration of a first gas, said analyzing means being coupled to said sampling means; and, c. correcting means for electrically correcting at least said first electrical signal from said analyzing means to a standard reference gas level, said correcting means being electrically coupled to said analyzing means whereby, said corrected electical signal may be displayed or otherwise monitored, so that the concentration level of at least one gas in said effluent gas may be absolutely determined.
Claim 3
Dependent Claim
52 words
The system described in claim 1, wherein said sampling means includes a pump for obtaining said sample and for forcing said sample through said system, a filter for separating particulate matter from said sample, a condensing means for removing moisture from said sample and a purge means for purging said sampling means.
Claim 4
Dependent Claim
15 words
The system described in claim 1, wherein said correcting means electrically performs the following computation:
Claim 5
Dependent Claim
57 words
The system described in claim 1 Having a calibrating means for automatically and periodically comparing a signal generated using a reference calibration gas with a predetermined calibration reference signal provided by said calibration means to generate an error signal, said calibrating means including means for resetting the analyzer means, as required, to obtain a zero error signal.
Claim 6
Dependent Claim
17 words
The system described in claim 4, wherein said calibrating means calibrates said analyzing means for zero conditions.
Claim 7
Dependent Claim
17 words
The system described in claim 4, wherein said calibrating means calibrates said analyzing means for span conditions.
Claim 8
Independent Claim
166 words
A system for monitoring effluent gas for determining the concentration of at least a first and second gas in said effluent gas comprising: a. a sampling means for sampling said effluent gas and for providing a sample; b. a plurality of analyzing means for analyzing said sample to determine the concentration of at least said first and second gas in said sample, and for generating at least a first electrical signal representative of the concentration of said first gas, and a second electrical signal representative of the concentration of said second gas, said analyzing means being coupled to said sampling means; and c. a correcting means for electrically correcting at least said first electrical signal from said analyzing means to a standard reference gas level, said correcting means being electrically coupled to said analyzing means whereby, said corrected electrical signals may be displayed or otherwise monitored, so that the levels of concentrations of at least said first and second gas in said effluent may be known.
Claim 9
Independent Claim
166 words
A system for monitoring effluent gas for determining the concentration of at least a first and second gas in said effluent gas comprising: a. a sampling means for sampling said effluent gas and for providing a sample; b. a plurality of analyzing means for analyzing said sample to determine the concentration of at least said first and second gas in said sample, and for generating at least a first electrical signal representative of the concentration of said first gas, and a second electrical signal representative of the concentration of said second gas, said analyzing means being coupled to said sampling means; and c. a correcting means for electrically correcting at least said first electrical signal from said analyzing means to a standard reference gas level, said correcting means being electrically coupled to said analyzing means whereby, said corrected electrical signals may be displayed or otherwise monitored, so that the levels of concentrations of at least said first and second gas in said effluent may be known.
Claim 10
Dependent Claim
19 words
The system described in claim 7, wherein said correcting means comprises a summing means coupled to a dividing means.
Claim 11
Dependent Claim
39 words
The system described in claim 8, including a means for producing a constant reference signal corresponding to a predetermined corrected excess of reference gas, wherein said first electrical signal is summed with said reference signal in said summing means.
Claim 12
Dependent Claim
24 words
The system described in claim 9, wherein the output from said summing means is divided by said second electrical signal in said dividing means.
Claim 13
Dependent Claim
52 words
The system described in claim 7, wherein said sampling means includes a pump for obtaining said sample and for forcing said sample through said system, a filter for separating particulate matter from said sample, a condensing means for removing moisture from said sample and a purge means for purging said sampling means.
Claim 14
Dependent Claim
15 words
The system described in claim 7, wherein said correcting means electrically performs the following computation:
Claim 15
Dependent Claim
59 words
The system described in claim 7 having a calibrating means for automatically and periodically comparing a signal generated using a reference calibration gas with a predetermined calibration reference signal provided by said calibration means to generate an error signal, said calibrating means including means for resetting the particular analyzer being calibrated, as required, to obtain a zero error signal.
Claim 16
Dependent Claim
16 words
The described in claim 13, wherein said calibration means calibrates said analyzing means for zero conditions.
Claim 17
Dependent Claim
17 words
The system described in claim 13, wherein said calibrating means calibrates said analyzing means for span conditions.
References Cited (Backward Citations)
US3634868A
Cited
US3756068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |