首页>
外国专利>
Self-calibrating temp. measuring unit - uses at least two thermal sensors placed in different materials and first sensor with set reference temp. has exothermic or endothermic effect, whilst second sensor has different reference temp.
Self-calibrating temp. measuring unit - uses at least two thermal sensors placed in different materials and first sensor with set reference temp. has exothermic or endothermic effect, whilst second sensor has different reference temp.
An evaluation unit determines the temps. measured by the thermal sensors and the temp. difference, using the system for measuring or regulating the temp. with an independent calibration. This calibration is achieved with the passing through of at least one reference temp. In specified temp. zones, respectively the thermal sensor embedded in the material, having no reference temp. in this zone, communicates with the evaluation unit for the temp. measurement. Whilst a correction signal is derived from the temp. difference, which in conjunction with the output signal of the thermal sensor carrying out the temp. measurement, sets the output signal of the evaluation unit on a value corresp. to the reference temp. ADVANTAGE - Uses temp. fixed points occurring with chemical elements together with known differential thermal analysis. So that measuring unit repeatedly self-calibrates, is free from aging, ensures reliable determination of temp. in determined temp. zones.
展开▼
