Electronic device for use in regions subject to explosion hazards
US6366436B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1999 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | Mar 16, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K7/1462
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A description is given of an electronic device for use in regions subject to explosion hazards, which is small and light, can be produced cost-effectively and offers a high degree of flexibility, having a housing (1) with a connecting chamber (3), which is designed in accordance with the safety class Ex-d or Ex-e, in which there is arranged a connecting element (6) to which electric lines can be connected, and in which there is arranged a circuit (9) for limiting a current, a voltage and a power which are fed to the device via the lines during operation, the limitation being performed in accordance with the requirements of safety class Ex-i, and having an electronics chamber (4), in which there is arranged an electronic system (11) designed in accordance with the safety class Ex-i, and which can be opened, in which housing (1) the connecting chamber (3) and the electronics chamber (4) are mutually separated, and a pressure-proof electric bushing (10) is provided through which at least one output line of the circuit (9) is led from the connecting chamber (3) into the electronics chamber (4), where it is connected to the electronic system (11) during operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.