http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2817813-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b051f9f7933c758e66f6ceda5c9fb2cc |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T137-7759 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F15-063 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F15-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F1-76 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F15-125 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F15-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F1-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F1-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F15-043 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F15-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01F15-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01F15-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01F15-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01F1-78 |
| filingDate | 2011-11-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e925d2c4eca32a1cfbe363b5e9327d4e |
| publicationDate | 2016-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2817813-C |
| titleOfInvention | Method of, and apparatus for, measuring the mass flow rate of a gas |
| abstract | There is provided a meter (200; 350) for measuring the mass flow rate of a gas. The meter comprises a conduit (206) through which the gas flows in use. The conduit has a flow restriction orifice (212) through which choked flow occurs in use. The flow restriction orifice divides the conduit into an upstream portion (214) upstream of said orifice and a downstream portion (216) downstream of said orifice. The meter further comprises a sensor assembly (204), the sensor assembly including a piezoelectric crystal oscillator (218) in said upstream portion such that said piezoelectric oscillator is in contact with said gas when the meter in use. The sensor assembly is arranged: to drive the piezoelectric crystal oscillator such that the piezoelectric crystal oscillator resonates at a resonant frequency; to measure said resonant frequency of said piezoelectric crystal oscillator; and to determine, from the resonant frequency, the mass flow rate through the orifice. |
| priorityDate | 2010-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.