Thermal conductivity detector and detector module
US10060866B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2016 |
| Grant date | Aug 28, 2018 |
| Priority date | — |
| Expiry date | Jul 24, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/3053
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thermal conductivity detector for a gas chromatograph includes a heatable resistive detector element configured to be physically arranged in a flow of analytes eluting from a chromatography column and electrically arranged together with resistors in separate arms of a measuring bridge, wherein to provide a new configuration of the thermal conductivity detector to allow high detector sensitivity and to meet intrinsic safety requirements, the detector element includes at least two equal detector sub-elements that are configured to be physically arranged in series in the flow of analytes and electrically arranged in parallel with each other, where the detector element in one arm and a reference resistor in the other arm of the same half of the measuring bridge are configured such that the total resistance of the parallel detector sub-elements at operating temperature is at least approximately equal to the resistance of the reference resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.