http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9448090-B2
Outgoing Links
Predicate | Object |
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assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b051f9f7933c758e66f6ceda5c9fb2cc |
classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F1-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F1-76 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F1-3227 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F1-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F1-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01F1-88 |
classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01F1-76 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01F1-88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01F1-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01F1-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01F1-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01F1-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01F1-42 |
filingDate | 2013-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate | 2016-09-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e925d2c4eca32a1cfbe363b5e9327d4e |
publicationDate | 2016-09-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber | US-9448090-B2 |
titleOfInvention | Method of, and apparatus for, measuring the mass flow rate of a gas |
abstract | There is provided a meter for measuring the mass flow rate of a gas, the meter comprising a conduit through which the gas flows in use, the conduit having a flow restriction orifice through which choked flow occurs in use, the flow restriction orifice dividing the conduit into an upstream portion upstream of said orifice and a downstream portion downstream of said orifice, the meter further comprising a sensor assembly including a first piezoelectric crystal oscillator in said upstream portion such that said first piezoelectric oscillator is in contact with said gas when the meter in use, a second piezoelectric crystal oscillator in said downstream portion such that said second piezoelectric oscillator is in contact with said gas when the meter in use, said sensor assembly being arranged: to drive the first and second piezoelectric crystal oscillators such that each of the first and second piezoelectric crystal oscillators resonate at respective resonant frequencies; to measure the resonant frequency of the first piezoelectric oscillator and the resonant frequency of resonant frequency of the first piezoelectric oscillator and the the second piezoelectric oscillator; and to determine, from the resonant frequency of the second piezoelectric oscillator, the mass flow rate of gas through said orifice. |
isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2017059501-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10928287-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9804010-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2015323361-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2020049605-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10274472-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11549874-B2 |
priorityDate | 2012-05-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 93.