Abstract: An analysis device analyzes a measurement sample based on spectral data obtained from that measurement sample. This analysis device includes a correlation data storage portion that stores correlation data that shows a correlation between spectral data for a reference sample in which total analysis values for a predetermined plurality of components are already known, and a total analysis value of the reference sample, and a calculation main unit that applies the correlation data stored in the correlation data storage portion to the spectral data obtained from the measurement sample, and then calculates the total analysis values of the predetermined plurality of components contained in the measurement sample. The reference sample includes a first reference sample that contains the predetermined plurality of components, and a second reference sample that is consisting of either one or a plurality of the components contained in the first reference sample.

Abstract: An exhaust gas analyzer to analyze exhaust gas discharged from an internal combustion engine includes an infrared light source, a photodetector, a CO2 concentration calculation part and an O2 concentration calculation part. The infrared light source irradiates infrared light to the exhaust gas. The photodetector detects infrared light after passing through the exhaust gas. The CO2 concentration calculation part calculates a CO2 concentration in the exhaust gas on the basis of a detection signal obtained by the photodetector. The O2 concentration calculation part calculates an O2 concentration in the exhaust gas from the CO2 concentration by using a fuel combustion reaction equation and an EGR rate in an exhaust gas recirculation system or a value related to the EGR rate.

Abstract: An analyzer analyzes a measurement sample on the basis of spectrum data obtained by irradiating light to the measurement sample. The analyzer includes a main analysis part, a correlation data storage part and a concentration calculation part. The main analysis part calculates a concentration of a predetermined hydrocarbon component contained in the measurement sample on the basis of the spectrum data of the measurement sample. The correlation data storage part stores therein a plurality of correlation data each indicating a correlation between a concentration of the predetermined hydrocarbon component or the spectrum data and a THC concentration. The concentration calculation part selects at least one correlation data from among a plurality of correlation data stored in the correlation data storage part according to the concentration of the predetermined hydrocarbon component, and calculates a concentration of the total hydrocarbon components in the measurement sample by using correlation data thus selected.

Abstract: An analyzer analyzes a measurement sample on the basis of spectrum data obtained by irradiating light to the measurement sample. The analyzer includes a main analysis part, a correlation data storage part and a concentration calculation part. The main analysis part calculates a concentration of a predetermined hydrocarbon component contained in the measurement sample on the basis of the spectrum data of the measurement sample. The correlation data storage part stores therein a plurality of correlation data each indicating a correlation between a concentration of the predetermined hydrocarbon component or the spectrum data and a THC concentration. The concentration calculation part selects at least one correlation data from among a plurality of correlation data stored in the correlation data storage part according to the concentration of the predetermined hydrocarbon component, and calculates a concentration of the total hydrocarbon components in the measurement sample by using correlation data thus selected.

Abstract: An exhaust gas analyzer to analyze exhaust gas discharged from an internal combustion engine includes an infrared light source, a photodetector, a CO2 concentration calculation part and an O2 concentration calculation part. The infrared light source irradiates infrared light to the exhaust gas. The photodetector detects infrared light after passing through the exhaust gas. The CO2 concentration calculation part calculates a CO2 concentration in the exhaust gas on the basis of a detection signal obtained by the photodetector. The O2 concentration calculation part calculates an O2 concentration in the exhaust gas from the CO2 concentration by using a fuel combustion reaction equation and an EGR rate in an exhaust gas recirculation system or a value related to the EGR rate.

Abstract: In order to attain a main objective of the present invention to provide an ion source capable of efficiently extracting ions, the ion source is configured to include: a conductive tubular body having an ion emitting aperture in a tip surface thereof and a penetration portion in a side wall thereof allowing thermo-electrons to pass through from an outside toward an inside; a mesh surrounding an outer periphery of the penetration portion; and a thermionic emission filament surrounding an outer periphery of the mesh, such that the thermo-electrons emitted from the thermionic emission filament pass through the mesh and reach the inside of the conductive tubular body through the penetration portion.

Abstract: In order to attain a main objective of the present invention to provide an ion source capable of efficiently extracting ions, the ion source is configured to include: a conductive tubular body having an ion emitting aperture in a tip surface thereof and a penetration portion in a side wall thereof allowing thermo-electrons to pass through from an outside toward an inside; a mesh surrounding an outer periphery of the penetration portion; and a thermionic emission filament surrounding an outer periphery of the mesh, such that the thermo-electrons emitted from the thermionic emission filament pass through the mesh and reach the inside of the conductive tubular body through the penetration portion.