High-accuracy dew point meter with double optical path system
A dew point meter, high-precision technology, applied in the direction of material water content, can solve problems such as inability to achieve accuracy, nonlinear offset, error, etc., to achieve the effect of improving measurement accuracy
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[0011] See figure 1 , figure 1 It is a structural diagram of the present invention. In the present invention, the sensing system of the dew point meter includes a temperature sensor, a dual optical path detection system and an observation system. Wherein the temperature sensor is a platinum wire thermal resistance sensor, and its structure also includes two parts of a sensor preamplifier circuit and a single-chip circuit. The single-chip circuit part includes an A / D conversion circuit and a nonlinear correction software control system. The nonlinear correction software control system , the input signal is divided into different segments according to different temperature values, and then multiplied by different compensation coefficients according to the segments where they are located, for correction. The dual optical path detection system in the sensing system can measure reflected light and scattered light at the same time. The observation system includes an observation m...
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