Dual-mode self-validating resistance/Johnson noise thermometer system
Patent
·
OSTI ID:6340632
A temperature measuring system is described comprising: a sensor having a resistor; first signal processor means, having a current source constantly coupled to the sensor, for continuously producing a first temperature signal based on the DC resistance of the sensor resistor; and second signal processor means, coupled to the sensor, for continuously producing a second temperature signal based exclusively on the AC Johnson noise generated by the sensor resistor, said sensor simultaneously and independently measuring DC resistance and AC Johnson noise voltage.
- Assignee:
- Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
- Patent Number(s):
- A; US 5228780
- Application Number:
- PPN: US 7-969057
- OSTI ID:
- 6340632
- Country of Publication:
- United States
- Language:
- English
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