Apparatus for transmitting instrumentation signals over power conductors
US5539375A · kind A · utility
27Cited by
11References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1994 |
| Grant date | Jul 23, 1996 |
| Priority date | — |
| Expiry date | Jul 7, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08C15/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A downhole instrumentation system comprises one or more transducers coupled in a DC current circuit between the star point of an electrical submersible pump and the chassis. A sensing circuit including a DC power supply and an ammeter is arranged to monitor the current drawn. The system includes active electronic components which provide a sequence of signals that may include reference and measuring signals or multiplexed signals from the transducers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.