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Hydrogen measured value correction method based on hydrogen sensor

A technology for sensors and measured values, which is applied in the structural details of gas analyzers, measuring devices, standard gas analyzers, etc., and can solve cumbersome problems.

Pending Publication Date: 2022-05-13
HENAN RELATIONS
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Problems solved by technology

[0002] At present, most of the existing pressure correction methods are similar to the patent CN 110988272 A "Method for Correcting Measurement Values ​​of Hydrogen Sensors". During the pressure correction process, at least two point measurement calibrations need to be carried out under at least two known concentration gas conditions , and then calculate the measured gas concentration under the known pressure to measure the hydrogen concentration value under the unknown pressure; therefore, the correction method of the known document CN11098827.A is very cumbersome to implement, see Example 1 for details

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  • Hydrogen measured value correction method based on hydrogen sensor
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  • Hydrogen measured value correction method based on hydrogen sensor

Examples

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Embodiment 1

[0039] For the method of correcting the measured value of hydrogen based on the hydrogen sensor in this embodiment, please refer to Figure 1-3 shown, including the following steps:

[0040] S101: Complete the calibration of the hydrogen sensor under a fixed absolute pressure P0;

[0041] S102: record the ambient absolute pressure value P0 when calibrating the hydrogen sensor;

[0042] For example: the concentration calibration value under the absolute pressure P0 = 100kPa is 18% VOL;

[0043] S103: Assuming that X is the gas to be tested, measure the gas to be tested, and record the ambient absolute pressure value Px and the concentration value Cx under the pressure;

[0044] For example: the measured value of the concentration of a certain hydrogen under the absolute pressure Px1 = 140kPa Cx1 = 25.2% VOL;

[0045] Under the absolute pressure Px2=180kPa, the concentration measurement value Cx2=27%VOL of actually measuring another hydrogen gas;

[0046] S104: According to ...

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Abstract

The invention discloses a hydrogen measured value correction method based on a hydrogen sensor. The method comprises the following steps: completing calibration of the hydrogen sensor under a fixed absolute pressure P0; recording an environment absolute pressure value P0 when the hydrogen sensor is calibrated; and assuming that X is a gas to be measured, measuring the gas to be measured, and recording an environment absolute pressure value Px and a concentration value under the pressure during measurement. The invention provides a simple and reliable environmental pressure correction method which is characterized in that the hydrogen concentration usually changes along with the pressure change of a measurement environment in the detection process of a hydrogen sensor, and in order to ensure that an accurate hydrogen concentration value can be measured through the hydrogen sensor under different environmental pressures, the invention provides the simple and reliable environmental pressure correction method.

Description

technical field [0001] The invention relates to a method for correcting hydrogen measurement values ​​based on a hydrogen sensor. Background technique [0002] At present, most of the existing pressure correction methods are similar to the patent CN 110988272 A "Method for Correcting Measurement Values ​​of Hydrogen Sensors". During the pressure correction process, at least two point measurement calibrations need to be carried out under at least two known concentration gas conditions , and then the measured gas concentration under the known pressure is calculated to measure the hydrogen concentration value under the unknown pressure; therefore, the correction method of the known document CN11098827.A is very cumbersome to implement, see Example 1 for details. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a quick and easy method for correcting the measured value of hydrogen based on the hydrogen sensor. [0004...

Claims

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/0006G01N33/005
Inventor 汪献忠赫树开许雪锋宋杰李子明
Owner HENAN RELATIONS
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