Transmitter with moisture draining housing and improved method of mounting RFI filters
US5546804A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1994 |
| Grant date | Aug 20, 1996 |
| Priority date | — |
| Expiry date | Aug 11, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K5/069
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A transmitter transmitting a sensed process variable over a conductor includes a cylindrical housing having a terminal compartment and an electronics compartment separated by a bulkhead. The terminal compartment used for conductor connection is subject to moisture accumulation. An access channel fully intersects an internal surface of terminal compartment such that the access channel drains moisture from the terminal compartment across a range of mounting orientations. The transmitter includes a circuit in the electronics compartment for compensating a process variable and providing the compensated process variable via a feedthrough circuit assembly in the bulkhead, which in one embodiment, includes an encapsulated radio frequency interference filter, to terminals in the terminal compartment for coupling to a conductor that is connected to an external controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.