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

Inactive Publication Date: 2011-06-29
上海莫克电子技术有限公司
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Problems solved by technology

The usual dew point meter, due to the nonlinear offset in the measurement process and the scattering of light, is likely to cause large errors.
At the same time, dew point measurement depends to a large extent on the timely and accurate observation of the measurement personnel. If the observation is not accurate, it will not be able to achieve better accuracy.

Method used

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  • High-accuracy dew point meter with double optical path system
  • High-accuracy dew point meter with double optical path system

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Embodiment 1

[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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PUM

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Abstract

The invention relates to a high-accuracy dew point meter with a double optical path system. A cold mirror dew point measuring principle is adopted; a sensing system of the dew point meter comprises a temperature sensor, a double optical path detection system and an observation system; the temperature sensor is a platinum wire thermal resistive sensor; and the dew point meter also comprises a sensor preamplification circuit and a singlechip circuit. The nonlinear deviation of the dew point meter can be well corrected; meanwhile, light ray measuring sensitivity is improved, and the measuring accuracy of the dew point meter is improved.

Description

technical field [0001] The invention relates to a dew point meter. Background technique [0002] Measurement accuracy is an important performance index of the dew point meter, especially in the process of laboratory use, the requirements for the measurement accuracy of the dew point meter are even higher. The usual dew point meter, due to the nonlinear offset in the measurement process and the scattering of light, is likely to cause large errors. At the same time, dew point measurement depends to a large extent on the timely and accurate observation of the measurement personnel. If the observation is not accurate, it will not be able to achieve better accuracy. Contents of the invention [0003] The object of the present invention is to solve the above problems and improve the accuracy of the measurement results of the dew point meter. To achieve this purpose, the present invention provides a high-precision dew point meter with a dual optical path system, which adopts th...

Claims

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Application Information

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IPC IPC(8): G01N25/66
Inventor 杨文举王志兰
Owner 上海莫克电子技术有限公司
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