Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_67fbb80e287b53eda353d8958423756b |
classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2291-011 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2291-0215 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2291-02836 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-097 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2291-02872 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2291-02881 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2291-02818 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2291-0423 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N29-024 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N29-022 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-083 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61B5-087 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N29-4472 |
classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B5-097 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B5-087 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N29-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61B5-083 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N29-024 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N29-02 |
filingDate |
2000-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5870bee828e1e2f8f2b51ebb5902df40 |
publicationDate |
2000-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
CA-2362605-A1 |
titleOfInvention |
Methods and apparatus for real time fluid analysis |
abstract |
A gas analyzer (10) integrated into the main passageway (11) of a breathing circuit includes pressure-drop flow element (12) that measures a pressure drop across an orifice, an acoustic flowmeter (14) measures the speed of sound in the gas mixture, and a SAW device (20) from which the viscosity of the gas mixture is determined. The dielectric constant of the gas mixture is determined from the capacitance of spaced-apart charged plates of a capacitor (22) through which the mixture passes. The gas mixture density is determined from the measured pressure drop and flow rate, while the gas mixture specific heat is determined from the density and speed of sound in accordance with known relationships. The individual concentrations of five constituents of a mixture of gasses can be determined by solving five equations relating the independently measured properties of the gas mixture to the individual constituent concentrations. |
priorityDate |
1999-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |