YC-1 Portable Copper Sulfate Reference Electrode/Cathodic Protection Potential Reference Electrode/Porous Ceramic Core/ 3cm

YC-1 Portable Copper Sulfate Reference Electrode/Cathodic Protection Potential Reference Electrode/Porous Ceramic Core/Diameter 3 cm Length 15 cm Reference electrode specifications: diameter 3cm length, 15cm, line length is 1.5 meters. 1. Usage: 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 the external current cathodic protection system where the soil is sticky. It can be applied to 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 made of transparent nylon rods, which is easy to observe the saturation of copper sulfate solution. (2) the electrode potential is stable and the electrode is not easy to polarize. (3) the electrode life is long, the electrode cap is connected with the cavity of the electrode, and the filling solution is convenient. One infusion can be used for more than one year. (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, 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 periodically replace the copper sulfate inside and clean the rods with nonmetallic abrasive materials; for example, use silica sandpaper instead of alumina sandpaper to clean the rods; if the solution becomes cloudy, pour it out and replace it with a new copper sulfate solution. Make sure that there are still undissolved crystals in the solution; this saturated solution of copper sulfate prevents copper from corrosion and stabilizes the electrode. In a polluted environment, after using electrodes, it is necessary to maintain them. Pollution of chlorine 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. A reference electrode should be prepared for use during the construction of the cathodic protection project. If the electrode is missing, another reference electrode can be used to continue the work.

The reference electrode needs to be prepared for field use with another new electrode to calibrate the accuracy of the electrode used in the field. But when there is more than 5mV between the value of the calibrated electrode and the value of the reference electrode being used in the field, it is necessary to clean the electrode used in the construction site. Because the temperature and sunlight in the construction environment are different, it is necessary to correct the change of potential. It is necessary to record the temperature at the same time when reading the value of the reference electrode. 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 values of 0.5 mV / [F] or 0.9 mV / [C] respectively when recording. Shielded electrodes are needed to avoid direct sunlight during the measurement using the reference electrode. A black tape can be used to cover the transparent part of the electrode side. The potential of the reference electrode in a sunny environment is 10 to 50 mV higher than that in a dark place where there is no sunlight.

Reference electrodes should also be selected according to different environments in special environments, such as the special reference electrodes for tank inner walls, which are used to measure cathodic protection potential in tank inner walls or other water media. The special reference electrode is constructed by fixing the pure zinc rod in a porous non-metallic shell to ensure that the electrode does not have direct contact with the protected device. The potential of the special reference electrode for the tank inner wall is in the sleeve to avoid direct contact with the tank wall. The electrode potential is - 1.10V CSE. The potential is stable, drift or polarization is less than 5%. The structure protection potential should be lower than + 0.25V. The main components of the special 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%, Zn as the residual. 1. portable reference electrode uses: 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 the external current cathodic protection system where the soil is sticky. It can be applied to all kinds of soil and fresh water.