Portable Copper Sulfate Reference Electrode Outlet Quality Porous Ceramic Core
Decoration and Construction Contents: Hydropower Engineering
Item No.: electrode
Colour Classification: Copper Sulfate Reference Electrode
Copper sulfate reference electrode
Specification: Wood Core Solution, Porous Ceramic Core Solution (New Product)
Purpose: Portable copper sulfate reference electrode is suitable for field use. It is mainly used to measure the natural potential and cathodic protection potential of underground metal pipeline, stray current in soil, and potential of steel bar in cable metal sheath and concrete. The electrode can be used as a reference electrode for controlling potential in an applied current cathodic protection system where the soil is sticky. It can be used in all kinds of soil and fresh water.
2. Structure and properties
(1) The electrode is small in size and easy to carry. The cavity is composed of transparent nylon rods, which is convenient for observing the saturation of the internal copper sulfate solution.
(2) The potential of the electrode is stable and the polarization of the electrode is not easy.
(3) The electrode has long service life, and the electrode cap is connected with the electrode cavity by a screw, so the filling solution is convenient.
(4) The electrode structure is firm, the joint is corrosion-resistant, the leakage rate of the microporous membrane is suitable, and there is no visible liquid flow, so it can be placed in the pocket.
3. Use and Maintenance of Copper Sulfate Reference Electrode
First of all, the surface of the reference electrode should be kept clean. When not in use, the porous plug should be covered with plastic bags or rubber caps to avoid contamination. Then replace the copper sulfate inside regularly and clean the rod with non-metallic abrasive material; for example, use silica sandpaper instead of alumina sandpaper to clean the rod. If the solution becomes turbid, pour it out and replace it with a new copper sulfate solution. Ensure that there are still undissolved crystals in the solution; this saturated copper sulfate solution prevents copper corrosion and stabilizes the electrode. In the polluted environment, after using the electrodes, they should be maintained. Pollution of chlorinated compounds can alter chemical reactions. When the concentration is 5 ppt, the reference potential becomes a mixed potential with a deviation of - 20 mV, and when the concentration is 100 ppt, the deviation reaches - 95 mV. During the construction of cathodic protection project, a reference electrode should be prepared for reserve. If the electrode is lost, another reference electrode can be used to continue working.
When the reference electrode is used in the field, another new electrode needs to be prepared to calibrate the accuracy of the electrode used in the field. However, when there is more than 5 mV between the calibration electrode and the reference electrode being used in the construction site, it is necessary to clean the electrodes used in the construction site.
Because the temperature and sunshine in the construction environment are different, it is necessary to correct the change of potential. Potential correction for different temperatures is necessary to record the temperature while reading the values of reference electrodes. When the reference temperature value used is higher or lower than the actual temperature value, it is necessary to add or subtract the temperature correction value of 0.5mV/ F or 0.9mV/ C respectively when recording.
In the measurement process of using reference electrode, shielding electrode is needed to avoid being directly exposed to sunlight. Black tape can be used to cover the transparent part on one side of the electrode. The values measured by the reference electrodes vary with the degree of sunlight exposure. The potential of the reference electrodes under better sunlight conditions is 10 to 50 mV higher than that of the reference electrodes in dark places where there is no sunlight.
Reference electrodes in special environments should also be selected according to different environments, such as special reference electrodes for tank inner walls, which are used to measure cathodic protection potential in tank inner walls or other water media. The structure of the special reference electrode is to fix the pure zinc rod in a porous non-metallic shell to ensure that the electrode does not have direct contact with the protected equipment. The potential of the special reference electrode for the inner wall of the tank is in the sleeve to avoid direct contact with the wall. The potential of the electrode is -1.10V CSE. The potential is stable, the drift or polarization is less than 5%, and the structural protection potential should be less than + 0.25V. The main components of the reference electrode for tank inner wall are: A1 less than 0.005%, Cd less than 0.003%, Fe less than 0.0014%, Cu less than 0.002%, Pb less than 0.003%, and Zn as the remainder. 1. Use of portable reference electrode: portable copper sulfate reference electrode is suitable for field use. It is mainly used to measure the natural potential and cathodic protection potential of underground metal pipeline, stray current in soil, and potential of steel bar in cable metal sheath and concrete. The electrode can be used as a reference electrode for controlling potential in an applied current cathodic protection system where the soil is sticky. It can be used in all kinds of soil and fresh water.
Packing:1PC
Warranty period: 120 days