Thermal conductivity detector
US7347080B2 · kind B2 · utility
3Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2005 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Apr 24, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N30/66
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thermal conductivity detector (TCD) utilizes a modular thermistor assembly that mounts to the TCD body. The thermistor assembly is easily replaceable in the TCD. Within the TCD, a thermistor bead is always held in the same relative location in a gas flow path, which is designed to produce laminar, low velocity gas flow across the thermistor bead. Two TCDs, each having a heater, are mounted in an insulated enclosure. The heaters are activated to bring the TCDs to operating temperature, and are then deactivated during analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.