Gas Analysis Calibration Curve Correction for Higher Boiling Compounds
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Solution Overview
Problem
Conventional gas analysis devices using FTIR spectroscopy face measurement errors due to the presence of higher boiling compounds in test gases, as their interference is not corrected in calibration curve data, leading to inaccurate concentration calculations.
Innovation Solution
A gas analysis device with a calibration curve data storage unit that stores corrected and uncorrected calibration curve data for higher boiling compounds, allowing the concentration calculation section to use the appropriate data based on the presence of these compounds, reducing measurement errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional calibration curve data (without correction for higher boiling compounds) is used, then the device complexity is reduced and ease of operation is improved, but measurement precision deteriorates due to uncorrected interference from higher boiling compounds
Solution Approach 1:
The calibration curve data is segmented into two distinct types: first calibration curve data that has been corrected for interference from higher boiling compounds, and second calibration curve data that has not been corrected. This segmentation allows the system to store multiple calibration datasets with different correction levels, enabling selective use based on the specific measurement requirements and presence of higher boiling compounds in the test gas.
Solution Approach 2:
The system dynamically selects which calibration curve data to use based on the actual measurement conditions. The concentration calculation section can switch between using first calibration curve data (when higher boiling compounds are present and correction is needed) and second calibration curve data (when higher boiling compounds are absent or correction is not required), making the calibration approach adaptive rather than static.
2Measurement precision
If first calibration curve data (corrected for higher boiling compounds) is used, then measurement precision is improved, but the device complexity increases due to storing and managing multiple calibration curve datasets
Solution Approach 1:
The concentration calculation section automatically determines which calibration curve data to use based on the characteristics of the test gas and measurement conditions. The system performs self-service by autonomously selecting the appropriate calibration dataset without requiring manual intervention or complex user configuration, thereby simplifying operation despite having multiple calibration datasets available.
Solution Approach 2:
The calibration curve data is prepared in advance with different correction levels. The first calibration curve data is pre-corrected for interference from higher boiling compounds, while the second is not corrected. This preliminary preparation of multiple calibration datasets allows the system to quickly select the appropriate one during measurement without performing complex real-time corrections, easing operational complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables accurate concentration calculations of components in test gases by accounting for the effects of higher boiling compounds, improving analysis accuracy and reducing errors.
Implementation Method 1
a gas analysis device that analyzes components to be measured that are contained in a test gas using a light spectrum obtained by irradiating light onto the test gas
Implementation Method 2
the pipes and analyzers are heated and are then held, for example, at a predetermined heating temperature
Data Source
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AI summary
In order to enable concentrations of components to be measured to be accurately calculated even when higher boiling compounds are contained in a test gas, a gas analysis device 100 that analyzes components to be measured that are contained in a test gas using a light spectrum obtained by irradiating light onto the test gas is provided with a calibration curve data storage section 21 in which is stored first calibration curve data in which effects on concentrations of the components to be measured from higher boiling compounds whose boiling point is higher than a heating temperature of an analyzer into which the test gas has been introduced have been corrected, and with a concentration calculation section 22 that calculates concentrations of components to be measured using the first calibration curve data.