Thermocouple measurement device with improved input ground characteristics
US5765949A · kind A · utility
6Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Dec 19, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K7/021
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for reducing the effects of ground loops in a thermocouple measurement device employing a differential amplifier for signal amplification. A resistor is coupled at the input of the differential amplifier to provide a DC ground reference. A capacitor is coupled in parallel to the resistor to compensate for AC noise and prevent the inputs from floating out of common mode range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.