Trace moisture analyzer is the ideal instrument for testing moisture content in petroleum, chemical, electric power, medicine, pesticide industry and research institutes. It adopts Karl Fischer Coulomb titration detection principle, applies microcomputer automatic control technology, adopts large-screen LCD display, full Chinese menu prompt operation, has rich calculations, and prints experimental results. What is the specific principle of that trace moisture analyzer? The reagent solution is a mixture of predominant iodine and sulfur dioxide filled pyridine, methanol and the like. The reaction principle of Karl Fischer reagent with water is: based on the presence of water, iodine is reduced by sulfur dioxide, and in the presence of pyridine and methanol, pyridine hydroiodide and methyl hydrogensulfate are generated. The reaction is: H20+I2+SO2+3C5H5N → 2C5H5N•HI+C5H5N•SO3 (1) C5H5N • SO3 + CH3OH → C5H5N • HSO4CH3 ..................... (2) In the electrolysis process, the electrode reactions are as follows: Anode: 2I- - 2e → I2 .......................................(3) Cathode: 2H+ + 2e → H2↑................................................(4) The iodine produced at the anode reacts with water to form hydroiodic acid until the complete reaction of the water is completed. The end of the reaction is indicated by a detection unit consisting of a pair of platinum electrodes. According to the law of Faraday's electrolysis, the number of molecules of iodine participating in the reaction is equal to the number of molecules of water and is proportional to the amount of charge. The amount of water and charge have the following equation: W=Q/10.722 ................................................... (5) Where: W -- Moisture content in the sample Unit: Micrograms Q -- Electrolytic Power Unit: Milli Coulomb Understanding the specific principle of the trace moisture meter is very helpful for us to use this instrument for moisture determination. High Precision CNC Drilling Mahcine Gildemeister High Precision CNC Drilling Machine is one type of heavy duty CNC equipment which is mainly designed for Metal processing job .Machine has choose strong cast steel structures ,high level and wide enough rails ,high accurate Taiwan Ball screws .The High Precision CNC Drilling Machine spindle is also upgrade with lower speed mechanical spindles .Machine could be used to do Drilling ,milling and tapping job on all type of steel metals .Meanwhile ,the High Precision CNC drilling Machine has a high accurate because of its advanced structure design and higher level components adopted .Machine could be used to make flange ,machinery spare parts ,metal mold making ,meters making etc . Cnc Drilling Mahcine,Drilling Mahcine,Cnc Metal Part With Drilling,High Precision Machined Jinan Rapid CNC Machinery Co.,LTD , https://www.gildemeistercnc.com
Trace moisture meter working principle