Method for the in-situ calibration of a thermometer
US11371894B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 2017 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Jun 8, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure relates to a method and apparatus for in-situ calibration and/or validation of a thermometer having a temperature sensor and a reference element composed at least partially of a material that undergoes a phase transformation at a phase transformation temperature, wherein the material remains in the solid phase in the phase transformation, the method including detecting and/or registering a measured value from the temperature sensor; detecting and/or registering a reference variable of the reference element; detecting the occurrence of the phase transformation based on a change of the reference variable; ascertaining a phase transformation time at which the phase transformation occurs; determining a sensor temperature using the temperature sensor at a measurement time that has the shortest time separation from the phase transformation time; and comparing the sensor temperature with the phase transformation temperature and/or determining a difference between the sensor temperature and the phase transformation temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.