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US 4,723,438 AGranted
Spark spectroscopic high-pressure gas analyzer
AssigneeSpectral Sciences, Inc.
InventorsSteven Adler-Golden, Lawrence S. Bernstein, Fritz Bien
Life of this patent
Estimating the term…
Abstract
A spark spectroscopic high-pressure gas analyzer including a spark chamber, having a pair of electrodes, for receiving a sample of the pressurized gas to be analyzed. A voltage is provided across the electrodes for generating a spark in the pressurized gas sample. A selected wavelength band of radiation emitted from the spark discharge in the pressurized gas corresponding to a component to be sensed in the gas is detected. The intensity of the emission in the wavelength band is integrated during the afterglow time interval of the spark emission and a signal representative of the integrated intensity of the emission in the selected narrow wavelength band is employed to determine the proportion of the component in the gas.
Claims36
A spark spectroscopic high-pressure gas analyzer comprising:
- a spark chamber including a pair of electrodes for receiving a sample of pressurized gas to be analyzed;
- means for providing a voltage across said electrodes for generating a spark in said pressurized gas sample;
- means for detecting a first selected narrow wavelength band of the radiation emitted from the spark discharge in said pressurized gas corresponding to a component to be detected in the gas;
- means for integrating the intensity of the emission in the first wavelength band;
- control means for enabling said means for providing and for subsequently enabling said means for integrating during the afterglow time interval of the spark emission;
- and
- means responsive to a signal representative of the integrated intensity of the emission in the selected narrow wavelength band for determining the proportion of the component in the gas.
4 more elements
A spark spectroscopic high-pressure helium analyzer comprising:
- a spark chamber including a pair of electrodes for receiving a sample of pressurized helium to be analyzed;
- means for providing a voltage across said elecctrodes for generating a spark in said pressurized helium sample;
- means for detecting a selected narrow wavelength band of the radiation emitted from the spark discharge in said pressurized helium corresponding to water to be detected in the helium;
- means for integrating the intensity of the emission in the selected narrow wavelength band;
- control means for enabling said means for providing and for subsequently enabling said means for integrating during the afterglow time interval of the spark emission;
- and
- means responsive to a signal representative of the integrated intensity of the emission in the selected narrow wavelength band for determining the proportion of water in the helium.
4 more elements
A spark spectroscopic high-pressure gas analyzer comprising:
- a spark chamber including a pair of electrodes for receiving a sample of pressurized gas to be analyzed;
- means for providing a voltage across said electrodes for generating a spark in said pressurized gas sample;
- means for detecting a first selected narrow wavelength band of the radiation emitted from the spark discharge in said pressurized gas corresponding to a component to be detected in the gas;
- means for integrating, during the afterglow time interval of the spark emission, the intensity of the emission in the first wavelength band;
- means responsive to a signal representative of the integrated intensity of the emission in the selected narrow wavelength band for determining the proportion of the component in the gas;
- and
- means for compensating the intensity of the emission in the first wavelength band for variations not due to variations in the proportion of the component being detected in the gas.
4 more elements
A spark spectroscopic high-pressure gas analyzer comprising:
- a spark chamber including a pair of electrodes for receiving a sample of pressurized gas to be analyzed;
- means for providing a voltage across said electrodes for generating a spark in said pressurized gas sample;
- means for detecting a first selected narrow wavelength band of the radiation emitted from the spark discharge in said pressurized gas corresponding to a component to be detected in the gas;
- means for integrating, during the afterglow time interval of the spark emission, the intensity of the emission in the first wavelength band;
- means responsive to a signal representative of the integrated intensity of the emission in the selected narrow wavelength band for determining the proportion of the component in the gas;
- and
- means for sensing the pressure of said gas to be analyzed, said means for determining being further responsive to said means for sensing the pressure for determining the proportion of the component in the gas at the sensed pressure.
4 more elements
A spark spectroscopic high-pressure gas analyzer comprising:
- a spark chamber including a pair of electrodes for receiving a sample of pressurized gas to be analyzed;
- means for providing a voltage across said electrodes for generating a spark in said pressurized gas sample;
- means for detecting a first selected narrow wavelength band of the radiation emitted from the spark discharge in said pressurized gas correponding to a component to be detected in the gas;
- means for integrating, during the afterflow time interval of the spark emission, the intensity of the emission in the first wavelength band;
- means responsive to a signal representative of the integrated intensity of the emission in the selected narrow wavelength band for determining the proportion of the component in the gas;
- and
- means for sensing the temperature of said gas to be analyzed, said means for determining being further responsive to said means for sensing the pressure for determining the proportion of the component in the gas at the sensed temperature.
4 more elements
A spark spectroscopic high-pressure gas analyzer comprising:
- a spark chamber including a pair of electrodes for receiving a sample of pressurized gas to be analyzed;
- means for providing a voltage across said electrodes for generating a spark in said pressurized gas sample;
- means for detecting a first selected narrow wavelength band of the radiation emitted from the spark discharge in said pressurized gas corresponding to a component to be detected in the gas;
- means for integrating, during the afterglow time interval of the spark emission, the intensity of the emission in the first wavelength band;
- and
- means responsive to a signal representative of the integrated intensity of the emission in the selected narrow wavelength band for determining the proportion of the component in the gas, said means for determining including means for retrieving a stored predetermined proportion of the component in the gas corresponding to a signal representative of the integrated intensity of the emission in the first band.
3 more elements
A spark spectroscopic high-pressure gas analyzer comprising:
- a spark chamber including a pair of electrodes for receiving a sample of pressurized gas to be analyzed;
- means for providing a voltage across said electrodes for generating a spark in said pressurized gas sample;
- means, including monochromator means, for detecting a first selected narrow wavelength band of the radiation emitted from the spark discharge in said pressurized gas corresponding to a component to be detected in the gas;
- means for integrating, during the afterglow time interval of the spark emission, the intensity of the emission in the first wavelength band;
- and
- means responsive to a signal representative of the integrated intensity of the emission in the selected narrow wavelength band for determining the proportion of the component in the gas.
3 more elements
Dependencies are inferred from the claim text.