Dissolved oxygen (DO) testing device and DO testing method
A technique of measuring device and measuring method, which is applied in the field of chemical measurement, and achieves the effect of easy implementation and small measurement error
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[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0025] The principle and method of the present invention are to carry out pressure-holding sampling, dilution and decompression treatment on the high-pressure and high-concentration dissolved oxygen solution, and then use a dissolved oxygen meter to directly measure the dissolved oxygen concentration of the diluted solution under normal pressure, and finally calculate the original high concentration The dissolved oxygen concentration of an oxygenated solution. The technical solution of the present invention is, a dissolved oxygen measuring device, such as figure 1 As shown, it includes the interface 3, the first shut-off valve 5, the dilution tank 6 and the hand pump 10 in sequence; among them, the interface 3 is used to connect the interface of the high-concentration dissolved oxygen fluid device 1 during measurement, and is used to connect the liquid ...
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