Moisture content calibration method for resistance-capacitance humidity sensor

A technology of humidity sensor and calibration method, applied in instruments, measuring devices, scientific instruments, etc., can solve problems such as poor calibration effect of moisture content measurement value, and achieve the effect of solving poor calibration effect

Active Publication Date: 2022-03-15
QINGDAO MINGHUA ELECTRONICS INSTR
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Problems solved by technology

[0004] In view of this, the present disclosure provides a moisture content calibration method for a resistance-capacitance humidity sensor, which can effectively solve the

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  • Moisture content calibration method for resistance-capacitance humidity sensor
  • Moisture content calibration method for resistance-capacitance humidity sensor
  • Moisture content calibration method for resistance-capacitance humidity sensor

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[0033] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0034] It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. Meanwhile, in the description of the present application, relative terms such as "first", "second", etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements...

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Abstract

The invention provides a moisture content calibration method for a resistance-capacitance humidity sensor, and belongs to the technical field of gas measurement. The calibration method comprises the following steps: drawing a moisture content fitting curve in a coordinate system taking the moisture content measurement value of gas as an X axis and the theoretical moisture content of gas as a Y axis based on the moisture content measurement value and the theoretical moisture content of sample gas; selecting a first calibration point and a second calibration point on the moisture content fitting curve, and generating a first calibration model, a second calibration model and a third calibration model based on the coordinates of the first calibration point and the coordinates of the second calibration point; introducing gas to be measured into the resistance-capacitance humidity sensor, and calibrating the moisture content measurement value of the gas to be measured by adopting the first calibration model, the second calibration model or the third calibration model. By means of the method, the problem that in the prior art, a single-point calibration method is poor in calibration effect on the moisture content measurement value of the to-be-measured gas is effectively solved.

Description

technical field [0001] The disclosure relates to the technical field of gas measurement, in particular to a moisture content calibration method for a resistance-capacitance humidity sensor. Background technique [0002] At present, there are mainly methods for measuring the moisture content of flue gas, such as wet and dry bulb method, condensation method, gravimetric method, and resistance-capacity method. Among them, the principle of humidity measurement by resistance-capacitance method is: the gas to be measured collected by the sampling probe is transported to the resistance-capacitance humidity sensor through the transmission pipeline and the filter device in turn, and the humidity content of the gas to be measured is measured by the resistance-capacity humidity sensor. However, under this method, due to the loss of moisture content during gas transmission and the error of the resistance-capacity humidity sensor itself, there is a certain deviation between the measured ...

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Application Information

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IPC IPC(8): G01N27/04G01N27/22
CPCG01N27/048G01N27/223
Inventor 赵新鄂刘朋刚杨海毅姜坤鹏李淑华安瑞君冯庆浩梅小强窦灏丁万生李德安田红兵刘文亮徐军王悦滕书云刘景超
Owner QINGDAO MINGHUA ELECTRONICS INSTR
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