Definition and classification of online analytical instruments
The online analytical instruments independently developed by Chengdu Jiuyin Technology include: online oxygen analyzer, online humidity analyzer, online explosion-proof oxygen analyzer, online dew point analyzer, online trace oxygen analyzer, online high-content oxygen analyzer, online oxygen concentration. How to choose the detector, online oxygen monitor, online humidity meter, online smoke moisture meter, online smoke moisture meter, online smoke moisture meter, etc. The answer lies in Chengdu Jiuyin Technology, the company provides you with a full set of technical solutions to help you solve problems! This article will detail the definition and classification of online analytical instruments.
1.1 Definition of online analytical instruments On-line analyzers, also known as process analyzers, are directly installed in industrial production processes or other source fluid sites, and the composition or physical parameters of the measured media are performed. A class of instruments that automatically measure continuously. Online analytical instruments are not only widely used in real-time analysis of industrial production, but also have broad application prospects in the continuous monitoring of environmental quality and pollution source emissions.
1.2 Classification of online analytical instruments There are many types of analytical instruments, their uses are different, and the development of analytical methods is rapid. There are more than 200 existing analytical methods, and different classification methods can be used from different angles.
According to the measurement principle and analysis method, the online analytical instruments can be roughly divided into the following categories.
(1) Optical analysis instruments include infrared gas analyzers using absorption spectroscopy, near-infrared spectroscopy, ultraviolet-visible spectrophotometers, laser gas analyzers, etc.; chemiluminescence methods using an emission spectroscopy method, ultraviolet fluorescence analyzers, and the like.
(2) Electrochemical analysis instruments include various electrochemical analysis instruments using potential, conductance, and current analysis methods, such as pH meter, conductivity meter, zirconia oxygen analyzer, fuel cell oxygen analyzer, and electrochemical toxic gas detection. And so on.
(3) Chromatographic analysis instrument The qualitative and quantitative analysis method for separating and detecting the mixed fluid by using the column and the detector is called chromatographic analysis. A distinguishing feature from other analytical instruments is that it uses chromatographic separation techniques and is classified as a separate type due to its large amount of use.
(4) Physical property analysis instrument In the analytical instrument, a class of instruments for quantitatively detecting the physical properties of a substance is called a physical property analysis instrument. Physical property analysis instruments are classified and named according to their test objects, such as moisture meters, hygrometers, densitometers, viscometers, turbidimeters, and petroleum product physical property analysis instruments. In view of the diversity and specificity of petroleum product physical analysis instruments, instruments other than general-purpose instruments such as moisture meters, densitometers, and viscometers, which are dedicated to petroleum product analysis, such as distillation range, vapor pressure, lightning, pour point, and symplectic Alkane analyzers are classified into one category, collectively referred to as oil property analysis instruments. China's refining industry is customarily called oil quality analysis instruments.
(5) Other analyzer instruments Combine online analytical instruments other than the above types of instruments into this category, including:
Paramagnetic oxygen analyzer It is made of high paramagnetic characteristics of oxygen, including thermomagnetic convection, magnetic mechanical, magnetic pressure oxygen analyzer;
Thermal analysis instruments such as thermal conductivity gas analyzers, catalytic combustion flammable gas detectors, calorimeters, etc.;
Radiation analysis equipment such as X-ray fluorescence spectrometer (also can be used to delineate optical analysis instruments), gamma ray densitometer, neutron and microwave moisture meter (also can be classified into physical property analysis instruments), smoke detectors, etc.;
Mass spectrometry instruments, such as industrial mass spectrometers, cannot be classified into a single class as in laboratory analytical instruments because they are currently used in small quantities.
According to the phase state division of the measured medium, the online analytical instrument can be divided into three categories: gas, liquid and solid analytical instruments; or divided into oxygen analyzer, sulfur analyzer and pH meter according to the measured components or parameters. , conductivity meter and many more.
1.1 Definition of online analytical instruments On-line analyzers, also known as process analyzers, are directly installed in industrial production processes or other source fluid sites, and the composition or physical parameters of the measured media are performed. A class of instruments that automatically measure continuously. Online analytical instruments are not only widely used in real-time analysis of industrial production, but also have broad application prospects in the continuous monitoring of environmental quality and pollution source emissions.
1.2 Classification of online analytical instruments There are many types of analytical instruments, their uses are different, and the development of analytical methods is rapid. There are more than 200 existing analytical methods, and different classification methods can be used from different angles.
According to the measurement principle and analysis method, the online analytical instruments can be roughly divided into the following categories.
(1) Optical analysis instruments include infrared gas analyzers using absorption spectroscopy, near-infrared spectroscopy, ultraviolet-visible spectrophotometers, laser gas analyzers, etc.; chemiluminescence methods using an emission spectroscopy method, ultraviolet fluorescence analyzers, and the like.
(2) Electrochemical analysis instruments include various electrochemical analysis instruments using potential, conductance, and current analysis methods, such as pH meter, conductivity meter, zirconia oxygen analyzer, fuel cell oxygen analyzer, and electrochemical toxic gas detection. And so on.
(3) Chromatographic analysis instrument The qualitative and quantitative analysis method for separating and detecting the mixed fluid by using the column and the detector is called chromatographic analysis. A distinguishing feature from other analytical instruments is that it uses chromatographic separation techniques and is classified as a separate type due to its large amount of use.
(4) Physical property analysis instrument In the analytical instrument, a class of instruments for quantitatively detecting the physical properties of a substance is called a physical property analysis instrument. Physical property analysis instruments are classified and named according to their test objects, such as moisture meters, hygrometers, densitometers, viscometers, turbidimeters, and petroleum product physical property analysis instruments. In view of the diversity and specificity of petroleum product physical analysis instruments, instruments other than general-purpose instruments such as moisture meters, densitometers, and viscometers, which are dedicated to petroleum product analysis, such as distillation range, vapor pressure, lightning, pour point, and symplectic Alkane analyzers are classified into one category, collectively referred to as oil property analysis instruments. China's refining industry is customarily called oil quality analysis instruments.
(5) Other analyzer instruments Combine online analytical instruments other than the above types of instruments into this category, including:
Paramagnetic oxygen analyzer It is made of high paramagnetic characteristics of oxygen, including thermomagnetic convection, magnetic mechanical, magnetic pressure oxygen analyzer;
Thermal analysis instruments such as thermal conductivity gas analyzers, catalytic combustion flammable gas detectors, calorimeters, etc.;
Radiation analysis equipment such as X-ray fluorescence spectrometer (also can be used to delineate optical analysis instruments), gamma ray densitometer, neutron and microwave moisture meter (also can be classified into physical property analysis instruments), smoke detectors, etc.;
Mass spectrometry instruments, such as industrial mass spectrometers, cannot be classified into a single class as in laboratory analytical instruments because they are currently used in small quantities.
According to the phase state division of the measured medium, the online analytical instrument can be divided into three categories: gas, liquid and solid analytical instruments; or divided into oxygen analyzer, sulfur analyzer and pH meter according to the measured components or parameters. , conductivity meter and many more.
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