Device for measuring the water content of a moving gas
US4222261A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jan 15, 1979 |
| Grant date | Sep 16, 1980 |
| Priority date | — |
| Expiry date | Jan 15, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N25/62
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A psychrometer or pick-up for measuring the content of water in a gas flow comprises a first sensor or probe for measuring the dry temperature of the gas and is arranged directly in the flow of gas, a second sensor or probe for measuring the wet temperature of the gas and is surrounded by a sheath of a material capable of absorbing a volatile liquid, the second sensor or probe with its sheath also being arranged in the flow of gas, a pair of screens mounted on opposite sides of the second sensor and the sheath for protecting the sheath against thermal radiation, and a wetting device, preferably formed by a dosing pump connected to a nozzle, for injecting successive doses of a predetermined amount of the volatile liquid directly into the interior of the sheath and onto the screens to prevent excessive and insufficient moistening of the sheath and the screens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.