Transmitter with electrical circuitry for inhibiting discharge of stored energy
US5585777A · kind A · utility
4Cited by
11References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1994 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Jun 7, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D3/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A transmitter coupled to a control loop which carries a loop current senses a process variable which is transmitted over the loop. Circuitry in the transmitter presents an effective capacitance C.sub.eff to the control loop. The transmitter includes an isolation network coupled between the circuitry and the control loop which prevents discharge of energy stored in capacitance C.sub.eff into the control loop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.