Introduction of Portable Dissolved Oxygens Detector:
Dissolved oxygens analyzer is based on electrochemical principles. That is, on two different metal electrodes in the measured electrolyte solution containing oxygen. Oxidation-reduction reaction will occur, and the resulting diffusion current has a certain relationship with the oxygen concentration in the solution. It is an instrument for measuring the oxygen content in water. Some instruments also use polarography in voltammetry, after applying voltage to the working electrode in the solution. It is produced based on the principle that the current on the polarogram generated by it has a certain relationship with the concentration of the substance to be measured in the solution.
The dissolved oxygen electrode can be used to measure the dissolved oxygen content in the sample aqueous solution to be tested in the field or in the laboratory. Since dissolved oxygen is one of the main indicators of water quality, dissolved oxygen electrodes can be widely used in the measurement of dissolved oxygen content in various occasions. Especially the aquaculture water, photosynthesis and respiration and on-site measurement.
When evaluating the ability of streams and lakes to support the survival of organisms, a biochemical oxygen demand test (BOD) is required. Measure the decay of the sample aqueous solution containing organic matter that consumes oxygen. And determine the relationship between the dissolved oxygen concentration and the temperature of the sample aqueous solution. The measurement range is 0~5, 10, 20 mg/L, the accuracy is ±3%~±5%, and the response time is about 30~120 s. There are two major categories of online continuous monitoring and laboratory instruments.
The functional characteristics of the dissolved oxygen meter:
0~40℃, automatic temperature compensation, the temperature will have a certain influence on the measurement. If the accuracy requirement is higher, the influence is greater, and temperature compensation can reduce this influence.
High-definition large-screen display, large viewing angle, clear writing, and moderate character size. It can clearly respond to the use of backlight and high-light daytime environment, quickly check the value, and the data is accurate.
Large storage, data export function, fast response, easy to carry.