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AssigneeTesto AG
InventorsMartin Stratmann, Sabine Hinkel, Daniel Auer, Patrick Zahn, Andreas Messerschmid
Estimating the term…
In a temperature measuring device (1) an IR-radiation detector (2) and a reference element (3) are provided, connected to a surface (6) of an object (7) in a heat-conducting fashion, with a first area (4) with high emissivity and a second area (5) with high reflectivity formed at the reference element (3), and the IR-radiation detector (2) is equipped for a separate detection of IR-radiation (9, 10, 11) from the first and second areas (4, 5) and a surface area (12) of the object (7). A computer (13) in the IR-radiation detector (2) is equipped to deduct a temperature measurement for the object (7), corrected for emissions and reflections from the detected IR-radiations (9, 10, 11).
A method for an IR-radiation-based temperature measurement in an object (7), comprising contacting the object (7) with a reference element (3) in a heat-conducting fashion, with the reference element (3) having a surface comprising a first area (4) with high emissivity and a second area (5) with high reflectivity, separately detecting a first IR-radiation (9) emitted by the first area (4) of the reference element (3), a second IR-radiation (10) emitted by the second area (5) of the reference element (3), and a third IR-radiation (11) emitted by a surface area (12) of the object (7), determining at least one measurement each from the IR-radiations (9, 10, 11) detected, and determining an emissivity of the surface area (12) as well as a portion of the reflected IR-radiation of the object (7) from the measurements.
An IR-radiation based temperature measuring device (1), comprising an IR-radiation detector (2) and a reference element (3), the reference element (3) has a surface comprises a first area (4) with a high emissivity and a second area (5) with a high reflectivity, an IR-detector unit (8) is provide, by which IR-radiation (9, 10, 11), respectively emitted by the first area (4) and the second area (5) of the reference element (3) applied to the object (7) and by a surface area (12) of the object (7) is separately recorded and evaluated, a measuring device that determines at least one measurement each from the detected IR-radiations (9, 10, 11), and a computer (13) equipped to determine an emissivity of the surface area (12) and a portion of the IR-radiation reflected by the environment of the object (7) using measurements determined.
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