Resonance thermometer
US4063150A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1976 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | Sep 14, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K7/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A resonance thermometer utilizing nuclear quadrupole resonance, nuclear magnetic resonance or like resonance-absorption phenomenon. The thermometer includes an oscillator for oscillatively detecting a resonance in a resonant material, a means for modulating the oscillation frequency of the oscillator at a low frequency, a first detecting means with a short time constant for detecting a component from the modulated output of the oscillator, and a second detecting means with a long time constant for detecting a component from the modulated output of the oscillator. The oscillator frequency is swept in linear ramp fashion at high speed until an output from the first detecting means occurs, at which point the frequency sweep is stopped. The precise resonance-absorption frequency of the resonant material then is found by using the output of the second detecting means, and the temperature is derived from the precise resonance-absorption frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.