The electrolysis cell (to determine the total sulfur content of the sulfur analyzer) is made of plexiglass. A pair of platinum electrolysis electrodes and a pair of platinum indication electrodes are fixed in the upper cover, and the upper cover and the shell are sealed with a rubber seal. The area of ​​the electrolysis electrode is 1×1.5 cm 2 , and the electrolytic cathode is placed in the center of the electrolysis cell. The anode is placed on the edge of the electrolysis cell so that the generated iodine can be diffused as soon as possible.
(1) The permeability of the glass melting plate. Its permeability directly affects the test results. Therefore, check the air permeability periodically. If the melting plate has black sinks, it should be cleaned in time. Remove the electrolytic cell (without opening the cover), and inject water into the electrolytic cell. The water should be less than the melting plate. Place the electrolytic cell at an angle, and use a pipette to inject the freshly prepared cleaning solution into the branch of the melting plate. (Formulation of lotion: 5g of potassium dichromate and 10ml of water are used for heating and dissolution. After cooling, 100ml of concentrated sulfuric acid is added slowly.) After the lotion is clean, repeat 2 or 3 times to remove the black precipitate. Then add tap water from the addition funnel and rinse it repeatedly with a shampoo ball until no wash liquid is left. At this time, the melting plate should be “as white as everâ€.
(2) Cleaning of the electrode. Frequently encountered in the use of electrode contamination, electrolyte yellow, resulting in unstable test results or easily lead to titration, so be careful to regularly scrub the electrode with acetone or ethanol. Rinse with distilled water after cleaning, and conduct leak detection after the electrolytic cell is installed. The specific operation is to fill the electrolytic cell with water, and connect the extraction pipe of the electrolytic cell with the sintered glass melting plate to take over the pipe by using a latex pipe; close the piston of the liquid addition funnel and open the discharge pipe of the electrolytic cell, if the water surface does not fall, Indicates that the electrolytic cell is airtight.
(3) Electrolytic cell electrode prone to failure and exclusion.
1 The electrolyte is whitish and not electrolyzed for a long time. The cause of this failure is the disconnection of the electrolysis electrode or the poor contact of the electrolytic cell plug.
2 The electrolyte is yellow to red and has been electrolyzed. The cause of this failure is indication of disconnection of the electrode or poor contact of the electrolytic cell plug. In both cases, check the peripheral plugs for moisture and sprinkle electrolyte. If the outside is normal, check whether the automatic tracking unit or the potential indicator and the terminal control unit board are faulty. In short, for all types of troubleshooting, it must be carefully and carefully calibrated with coal standards in order to ensure the accuracy of the measurement results.
The use of electrolysis cells for the measurement of sulfur instruments is of great relevance. If we want to improve the life of the sulfur analyzer, we must maintain the electrolysis cell. Only when she is well maintained, can the sulfur analyzer be used for longer periods of time and the results of Will be more accurate.
(1) The permeability of the glass melting plate. Its permeability directly affects the test results. Therefore, check the air permeability periodically. If the melting plate has black sinks, it should be cleaned in time. Remove the electrolytic cell (without opening the cover), and inject water into the electrolytic cell. The water should be less than the melting plate. Place the electrolytic cell at an angle, and use a pipette to inject the freshly prepared cleaning solution into the branch of the melting plate. (Formulation of lotion: 5g of potassium dichromate and 10ml of water are used for heating and dissolution. After cooling, 100ml of concentrated sulfuric acid is added slowly.) After the lotion is clean, repeat 2 or 3 times to remove the black precipitate. Then add tap water from the addition funnel and rinse it repeatedly with a shampoo ball until no wash liquid is left. At this time, the melting plate should be “as white as everâ€.
(2) Cleaning of the electrode. Frequently encountered in the use of electrode contamination, electrolyte yellow, resulting in unstable test results or easily lead to titration, so be careful to regularly scrub the electrode with acetone or ethanol. Rinse with distilled water after cleaning, and conduct leak detection after the electrolytic cell is installed. The specific operation is to fill the electrolytic cell with water, and connect the extraction pipe of the electrolytic cell with the sintered glass melting plate to take over the pipe by using a latex pipe; close the piston of the liquid addition funnel and open the discharge pipe of the electrolytic cell, if the water surface does not fall, Indicates that the electrolytic cell is airtight.
(3) Electrolytic cell electrode prone to failure and exclusion.
1 The electrolyte is whitish and not electrolyzed for a long time. The cause of this failure is the disconnection of the electrolysis electrode or the poor contact of the electrolytic cell plug.
2 The electrolyte is yellow to red and has been electrolyzed. The cause of this failure is indication of disconnection of the electrode or poor contact of the electrolytic cell plug. In both cases, check the peripheral plugs for moisture and sprinkle electrolyte. If the outside is normal, check whether the automatic tracking unit or the potential indicator and the terminal control unit board are faulty. In short, for all types of troubleshooting, it must be carefully and carefully calibrated with coal standards in order to ensure the accuracy of the measurement results.
The use of electrolysis cells for the measurement of sulfur instruments is of great relevance. If we want to improve the life of the sulfur analyzer, we must maintain the electrolysis cell. Only when she is well maintained, can the sulfur analyzer be used for longer periods of time and the results of Will be more accurate.
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