低温用放射温度計の開発

概要

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The series of radiation thermometer, developed Daidos C.R.L., has covered a temperature range from 250°C to 2100°C. A new portable thermometer having another range of -50∼1000°C was recently developed to extend the measurement limit to lower temperature.Far-infrared radiation should be used in this thermometer, for which there is no suitable lens and a mirror system is adapted to collect the radiation energy. By selecting a sensitive detector and devising efficient optical system, the minimum target size can be reduced to 5mmφ. In addition, by means of rotating velocity control for the chopping motor or compensation for the influence of circumstance temperature, the thermometer is provided with a high accuracy (±1% of reading in absolute temperature) and small temperature drift (±0.04% of reading (K)/°C).
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