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5846836 Reversible detector for gaseous carbon dioxide
946
New Patents
to destabilize the oxide colloids, and a clear supernatant which results that can be recycled through the injection well without further waste treatment.
5846831 METHODS AND SYSTEMS FOR CONTROLLING FLOW OF A DILUTED SAMPLE AND DETERMINING POLLUTANTS BASED ON WATER CONTENT IN ENGINE EXHAUST EMISSIONS Silvis William M Ann Arbor, MI, UNITED STATES assigned to Horiba lnstuments lnc In a first embodiment of the present invention, a control method and system are provided in an exhaust emission sampling system for controlling a flow controller in order to compensate for the effects of changing water vapor content in a diluted sample having a predetermined dilution ratio. A water measuring device such as a relative humidity sensor. generates a water vapor signal based on the amount of water vapor in the diluted sample. The water vapor signal is then processed within a control unit to obtain a value for the amount of water in the diluted sample. A control signal is generated by the control unit based on the amount of water vapor, flow rate of the exhaust emissions, and also, on the type of fuel used in the combustion process to control the flow controller which is, preferably, a mass flow controller.
5846836 REVERSIBLE DETECTOR FOR GASEOUS CARBON DIOXIDE Helotes, TX, UNITED Mallow William A STATES assigned to Southwest Research Institute An apparatus and method for visually and continuously monitoring gaseous concentrations of electrophiles such as carbon dioxide. A coating composition comprising an organic binder,
filler/pigment, an activator, and carbon dioxide sensitive color indicator interacts with a primed substrate to which it is applied for support. The coated primed substrate may then be used for estimation of carbon dioxide concentration by the detection of a substantially instantaneous and reversible color change of the coated primed substrate.
5847292 SHEET FLOW WATER QUALITY MONITORING DEVICE Young George Kenneth; Graziano Frank R; Stein Stuart Springfield, VA, UNITED STATES assigned to GKY & Associates lnc A runoff water monitoring system for sampling sheet-flow from a generally flat surface having an edge comprises an elongated recess contiguous to the edge and depending below the generally flat surface. An insert in the recess has an upper end and an open frame plate member. A grate member is secured to the open frame and has a downwardly depending sample receptacle attachment sleeve and a grate plate having a predetermined number of sheet-flow metering apertures therein. A sample collection receptacle is releasably secured on the attachment sleeve to receive water flowing through the sheet-flow metering apertures. The sheet-flow metering apertures are preferably rectangular and have a rounded leading or upstream edge and square side and back edges. The sample receptacle over the attachment sleeve which has an endless groove in the sleeve and an endless elastic member is seated in the groove over the open end of the sample receptacle. The sample receptacle attachment sleeve includes an internal baffle for trapping floating pollutants. The sample receptacle has an indicia space to write collection data and a tongue-and-groove seal spaced a type predetermined distance below the mouth of the sample receptacle.
New Patents
to destabilize the oxide colloids, and a clear supernatant which results that can be recycled through the injection well without further waste treatment.
5846831 METHODS AND SYSTEMS FOR CONTROLLING FLOW OF A DILUTED SAMPLE AND DETERMINING POLLUTANTS BASED ON WATER CONTENT IN ENGINE EXHAUST EMISSIONS Silvis William M Ann Arbor, MI, UNITED STATES assigned to Horiba lnstuments lnc In a first embodiment of the present invention, a control method and system are provided in an exhaust emission sampling system for controlling a flow controller in order to compensate for the effects of changing water vapor content in a diluted sample having a predetermined dilution ratio. A water measuring device such as a relative humidity sensor. generates a water vapor signal based on the amount of water vapor in the diluted sample. The water vapor signal is then processed within a control unit to obtain a value for the amount of water in the diluted sample. A control signal is generated by the control unit based on the amount of water vapor, flow rate of the exhaust emissions, and also, on the type of fuel used in the combustion process to control the flow controller which is, preferably, a mass flow controller.
5846836 REVERSIBLE DETECTOR FOR GASEOUS CARBON DIOXIDE Helotes, TX, UNITED Mallow William A STATES assigned to Southwest Research Institute An apparatus and method for visually and continuously monitoring gaseous concentrations of electrophiles such as carbon dioxide. A coating composition comprising an organic binder,
filler/pigment, an activator, and carbon dioxide sensitive color indicator interacts with a primed substrate to which it is applied for support. The coated primed substrate may then be used for estimation of carbon dioxide concentration by the detection of a substantially instantaneous and reversible color change of the coated primed substrate.
5847292 SHEET FLOW WATER QUALITY MONITORING DEVICE Young George Kenneth; Graziano Frank R; Stein Stuart Springfield, VA, UNITED STATES assigned to GKY & Associates lnc A runoff water monitoring system for sampling sheet-flow from a generally flat surface having an edge comprises an elongated recess contiguous to the edge and depending below the generally flat surface. An insert in the recess has an upper end and an open frame plate member. A grate member is secured to the open frame and has a downwardly depending sample receptacle attachment sleeve and a grate plate having a predetermined number of sheet-flow metering apertures therein. A sample collection receptacle is releasably secured on the attachment sleeve to receive water flowing through the sheet-flow metering apertures. The sheet-flow metering apertures are preferably rectangular and have a rounded leading or upstream edge and square side and back edges. The sample receptacle over the attachment sleeve which has an endless groove in the sleeve and an endless elastic member is seated in the groove over the open end of the sample receptacle. The sample receptacle attachment sleeve includes an internal baffle for trapping floating pollutants. The sample receptacle has an indicia space to write collection data and a tongue-and-groove seal spaced a type predetermined distance below the mouth of the sample receptacle.