Back to results
US 7,253,413 B2Granted
Gas identification system
AssigneeSmiths Detection Inc.
InventorsTerence Sauer, Gregg Ressler, Robert Burch, William Desousa, Maxim Frayer, Kenneth Schreiber
Life of this patent
Estimating the term…
Abstract
A system for identifying a gas sample includes a canister, a docking station, a thermal desorption device, and a spectrometer. The canister includes a sorbent and a valve. The docking station is configured to removably engage the canister. When the canister is engaged with the docking station, the canister is capable of fluid communication with a gas cell via the valve.
Claims53
A system for identifying a gas sample, the system comprising:
- a canister including a sorbent and a valve;
- a docking station for removably engaging the canister, wherein the canister is capable of fluid communication with a gas cell via the valve when the canister is engaged with the docking station;
- a thermal desorption device disposed within the canister;
- and
- a spectrometer,
- wherein the system is capable of identifying a compound in the gas sample.
3 more elements
A method for identifying a gaseous sample, comprising:
- providing a sorbent disposed in a tube;
- adsorbing an atmospheric gas to the sorbent;
- desorbing the atmospheric gas from the sorbent to yield a gaseous sample;
- circulating a carrier gas through the tube so that the carrier gas mixes with the gaseous sample;
- transferring the gaseous sample to a gas cell;
- activating a spectrometer in optical contact with the gas cell;
- obtaining a spectrum of the gaseous sample;
- comparing the obtained spectrum of the gaseous sample with a set of known spectrum values;
- identifying a compound in the gaseous sample;
- and
- recirculating the gaseous sample or readsorbing the gaseous sample to the sorbent.
8 more elements
A portable device for analyzing a gaseous sample, comprising:
- a canister, wherein a sorbent is disposed within the canister;
- a thermal desorption device disposed within the canister;
- a gas cell in optical communication with a spectrometer;
- a docking station configured for removable engagement with the canister, wherein the canister is adapted for fluid communication with the gas cell when the canister is engaged with the docking station;
- and
- a computer system for analyzing data from the spectrometer, wherein the computer system is capable of identifying a compound in the gaseous sample.
3 more elements
Dependencies are inferred from the claim text.