Thermocouple open circuit detector
US4496250A · kind A · utility
4Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1983 |
| Grant date | Jan 29, 1985 |
| Priority date | — |
| Expiry date | Mar 3, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/54
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thermocouple open-circuit detector is made insensitive to noise pick-up in the thermocouple by increasing the bias on the detecting amplifier beyond the point where it would be affected by the noise and providing a means for reducing that bias during the period when the pulses that test the thermocouple are present. The test pulse will then trigger the detecting amplifier on when the thermocouple is open.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.