http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0253872-A4
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cd76e31f0913fb6364e6f3cbefc3d45f |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2021-3166 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2201-1273 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2201-126 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2021-3159 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N2201-12769 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-3504 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-274 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-31 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-35 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01J1-44 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-27 |
| filingDate | 1987-01-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cb5224af7c359479be11f73d452a0cc0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cb27b27978215853a15fc04b296ec647 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5fa1b984f546a1caeb6f08c339a4c42a |
| publicationDate | 1990-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0253872-A4 |
| titleOfInvention | INFRARED GAS ANALYZER WITH AUTOMATIC ZERO ADJUSTMENT. |
| abstract | Automatic zeroing apparatus zeroes an infrared gas analyzer automatically upon the occurrence of preselected conditions to indicate zero in the absence of absorption of infrared radiation by a gas mixture being analyzed. The gas analyzer has a sample cell (11) for containing a gas mixture to be analyzed. Infrared radiation directed through the sample cell (11) is detected at a preselected wavelength to produce a detection signal. A signal processor outputs a signal systematically related to the difference between the detection signal and a reference signal. For zeroing the sample cell (11) is filled with gas substantially nonabsorbent of infrared radiation at the respective characteristic wavelength. A comparator produces an error signal when the output signal differs from zero. A gain control (DAC 21) automatically controls the signal level of the detection signal to reduce the output signal substantially to zero with the nonabsorbent gas filling the sample cell (11). The preselected conditions may include the passage of a predetermined time and a temperature drift beyond a predetermined limit. |
| priorityDate | 1986-01-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.