FIELD: physics.
SUBSTANCE: thermochemical detector comprises operating and comparative sensitive elements in the form of platinum filaments, one of which - the operating sensitive element - is coated with a thin layer of an oxidation process catalyst. The operating and comparative platinum filaments are placed in one cylindrical housing in which two diametrically lying holes are drilled for a gas stream; one of the holes is intended for inserting a capillary which feeds eluate from a column opposite the electric lead with a welded middle point of series-connected platinum filaments, which are connected in a bridge measuring circuit. The eluate-feeding capillary is provided with two baffles arranged in parallel to the platinum filaments, and has a special cross-sectional shape for uniform distribution of the gas stream from the column to the platinum filaments, and the feed capillary is sealed in the cylindrical housing with an inorganic silicate adhesive.
EFFECT: high sensitivity and precision of detection.
1 dwg, 2 tbl
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| THERMOCHEMICAL DETECTOR | 0 |
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| PLANARY MICRODOSER FOR GAS CHROMATOGRAPHY | 2016 |
|
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| SYSTEM AND A METHOD OF MEASURING AND QUANTITATIVE ANALYSIS OF OXYGEN AND IMPURITIES CONTAINED IN MEDICAL GASEOUS OXYGEN | 2022 |
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RU2797786C1 |
| THERMOCHEMICAL DETECTOR | 0 |
|
SU1068793A1 |
| THERMOCHEMICAL DETECTOR | 0 |
|
SU934340A1 |
