Patent classifications
G
PHYSICS
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G01
MEASURING; TESTING
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G01C
MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
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11/00
Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
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G01C11/06
by comparison of two or more pictures of the same area
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G01C11/12
the pictures being supported in the same relative position as when they were taken
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G01C11/22
with mechanical projection
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G01C11/22

Method and apparatus for calibrating a thermometer in situ
10495526 · 2019-12-03 · ·

The invention relates to an apparatus for the calibration of a thermometer in situ, wherein the apparatus has a temperature sensor (S) for determining a temperature (T); wherein a reference element (K) is provided for calibrating the temperature sensor (S); wherein the reference element (K) at least partially comprises a ferroelectric material (D), which experiences a phase transformation at at least one predetermined temperature (T.sub.Ph) in a temperature range relevant for calibrating the temperature sensor (S).

Method and apparatus for calibrating a thermometer in situ
10495526 · 2019-12-03 · ·

The invention relates to an apparatus for the calibration of a thermometer in situ, wherein the apparatus has a temperature sensor (S) for determining a temperature (T); wherein a reference element (K) is provided for calibrating the temperature sensor (S); wherein the reference element (K) at least partially comprises a ferroelectric material (D), which experiences a phase transformation at at least one predetermined temperature (T.sub.Ph) in a temperature range relevant for calibrating the temperature sensor (S).