Online total organic carbon analyzer is an instrument used for continuous monitoring of total organic carbon (TOC) content in water bodies, which plays an important role in water quality monitoring and control.
working principle
High temperature catalytic combustion oxidation method: Organic carbon in water samples is oxidized to carbon dioxide under high temperature (such as 680 ℃) and catalyst action, and the total organic carbon content is calculated by detecting the amount of carbon dioxide generated.
UV oxidation method: using ultraviolet light and oxidants (such as persulfate) to oxidize organic carbon in water samples into carbon dioxide, and then measuring the concentration of carbon dioxide through a non dispersive infrared detector to obtain the TOC content.
UV oxidation method and conductivity difference measurement method: Firstly, organic matter in water is converted into carbon dioxide through UV oxidation, and then the conductivity difference of the water sample before and after oxidation is measured to calculate the TOC content.
structural composition
Sample injection system: responsible for introducing water samples into the instrument, usually including sampling pumps, pipelines, filters, etc., to ensure that the water samples can accurately and stably enter the analysis unit.
Oxidation unit: It is a key component for achieving organic matter oxidation, and according to different principles, it includes components such as high-temperature combustion furnaces, ultraviolet lamps, oxidation reactors, etc.
Detection unit: used to detect carbon dioxide generated after oxidation. Common detection methods include non dispersive infrared detection, conductivity detection, etc. The corresponding detection components include infrared detectors, conductivity sensors, etc.
Data processing and control system: processes the detected signals, calculates the TOC content, and can achieve automatic control, data storage, display, transmission, and other functions of the instrument.
feature
Real time monitoring: It can continuously monitor water samples without interruption, provide real-time TOC data, and detect changes in water quality in a timely manner.
High precision: Some instruments have detection limits as low as 0.1 μ g/L and have high measurement accuracy and repeatability, which can meet the high-precision requirements of different industries for water quality monitoring.
High degree of automation: equipped with functions such as automatic calibration, automatic cleaning, and fault alarm, easy to operate, reducing manual intervention and labor intensity.
Remote monitoring: supports remote monitoring and data transmission through the network, making it convenient for users to obtain water quality information anytime and anywhere.