http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2583772-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0d72badef689a7069b5a443592e70a0a |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2021-0193 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01M15-108 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-6402 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01M15-10 |
| filingDate | 2019-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_526e36b731cbe4aa489fb548a4ed939b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ca56a1d42743d26c6b97ae630bbfbe04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6fd6fed85366a2965f3442d294adf3eb |
| publicationDate | 2020-11-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-2583772-A |
| titleOfInvention | Method to measure the concentration of nitrogen dioxide with a fast time response and a high degree of sample pressure independence |
| abstract | The invention relates to measuring NO2 concentration from a combustion engine by exciting the NO_2 using a laser, and then detecting the near-infrared light given off as it returns to its ground state; the near-infrared red light being produced proportional to the concentration of Nitrogen Dioxide. A sample probe 2 takes a sample from a source of emissions I such as an engine. The sample probe supplies sample gas to measurement chamber 8 via a thin capillary tube 7. Downstream of the entrance to capillary tube 7 is a chamber 5 held at constant pressure connected to a vacuum source 6, the aim being to keep the pressure at point 3 constant, and hence the flow into the capillary 7 constant. An ultraviolet or visible light source14 irradiates the gas sample in the measurement chamber 8 inducing fluorescence in nitrogen dioxide molecules present within the gas. This fluorescence is detected by a detector 10, producing a signal in proportion to the concentration of nitrogen dioxide at 1. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-116147875-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-116147875-B |
| priorityDate | 2019-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.