http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0879410-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d29e8250d20d8c342e084ce87022ae7a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N23-083 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N23-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N9-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N9-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N23-12 |
| filingDate | 1997-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a918530e0e2db95b19179300de75e511 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_32b35ef39909baf708517fe87d432ac1 |
| publicationDate | 1998-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0879410-A1 |
| titleOfInvention | Method and apparatus for remote density measurement |
| abstract | A Multiphoton Densitometer (MP-Densitometer) for remote density measurement uses special multiphoton sources with very low, licen se-exempt activity to measure the density of samples. For gas/oil/water mixture inside 3 inch steel pipes, the measurement precision, using a 2 microCi source, is substantially equivalent to that obtained by a prior-art gamma densitometer using a 30 milliCi source. Using a 1 microCi source the MP Densitometer measures the density, with uncertainty less than 1 %, of fluids inside pipes with a range of diameters up to 10 inches. The invention achieves very low background (orders of magnitude lower than for prior-art gamma densitometers) through selection of densitometer elements, geometry, electronics, and software. Reduction of system uncertainties, a temperature compensation scheme, active temperature regulation, real-time statistical analysis, and smoothing of the output signal allowed the elimination of temperature effects and pile-up artifacts. With a very low activity source, the MP-Densitometer has an accuracy in density measurements of 1 % for oil/water laminar flow. The uncertainty is 0.5 % for longer measurement tim es on the order of a few minutes. |
| priorityDate | 1996-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.