Gas sampling device and gas analyzer employing the same
AssigneeAgilent Technologies, Inc.
InventorRaffaele Correale
Life of this patent
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Abstract
A gas sampling device has a high-vacuum tight chamber formed within its casing, which communicates with an ambient outside through an inlet hole for the gas flow to be ionized and the ambient downstream the ionization chamber with an outlet hole for the ionized gas. A high-vacuum tight membrane separates the inlet hole from the ambient outside the chamber. The membrane has at least one nanohole formed therethrough with a diameter in the order of nanometers.
Claims20
A gas sampling device comprising:
- a high-vacuum tight ionization chamber defined within a high-vacuum tight casing, said ionization chamber defining a first inlet hole for receiving the gas to be ionised from an ambient outside the ionization chamber and a second outlet hole for outputting an ionised gas downstream from the ionization chamber;
- and
- a high-vacuum tight membrane separating the first hole from the ambient outside the ionization chamber and having at least one nanohole with a diameter in the order of nanometers, wherein said at least one nanohole is formed through the membrane along a substantially rectilinear axis.
A gas analyzer having an entrance section, an ionization section, an analysis section and a detection section, the gas analyzer comprising:
- a high-vacuum tight casing;
- a high-vacuum tight ionization chamber defined within said casing, said ionization chamber defining a first inlet hole for receiving the gas to be ionised from an ambient outside the ionization chamber and a second outlet hole for outputting an ionised gas downstream from the ionization chamber;
- and
- a high-vacuum tight membrane separating the first inlet hole from the ambient outside the ionization chamber and having at least one nanohole with a diameter in the order of nanometers,
- wherein said at least one nanohole is formed through the membrane along a substantially rectilinear axis.
A gas sampling device, comprising:
- an ionization chamber maintained in a high-vacuum condition and configured to ionize gas, the ionization chamber having an inlet hole for receiving the gas to be ionized from an ambient outside the ionization chamber and an outlet hole for outputting ionized gas downstream from the ionization chamber, the outside ambient being at atmospheric pressure;
- and
- a membrane configured over the inlet hole to separate the ionization chamber from the outside ambient, the membrane defining at least one nanohole, with a diameter in the order of nanometers, enabling flow of the gas to be ionized into the inlet hole under differential vacuum conditions.
Dependencies are inferred from the claim text.