Infrared sensor with explosion-proof protection for gas metering appliances
US7285782B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2003 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Jan 15, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/0385
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An infrared sensor for gas metering appliances consisting of a metering chamber with an infrared source and an infrared sensor. The metering chamber is connected to the atmosphere via an anti-dust and anti-damp filter. The metering chamber is arranged in a protective housing having gas inlets and outlets. Connection to the metering chamber via a gas exchanger orifice and an anti-dust and anti-damp filter is not of a pressure-proof design based on normal pressure conditions. The infrared source and the infrared detector are integrated in the wall of the metering chamber and held therein. The infrared source is a lamp. The infrared source and infrared detector have a fail-safe power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.