Generally, for newly started or normal production electrolytic cells, the voltage drop of cathode and anode is within a certain range. When the cathode and anode carbon blocks with unqualified assembly quality are put into production, the voltage drop of furnace bottom and anode increases, and energy consumption increases. Therefore, it is very necessary to strengthen the monitoring of assembly quality on the premise of ensuring the quality of assembly materials. The premise of strengthening the monitoring of assembly process is to be able to timely and accurately detect the voltage drop of cathode or anode carbon blocks after assembly, and to deal with unqualified carbon blocks in time if they are found to be unqualified, so as to avoid unqualified carbon blocks from being put into the cell.

The measurement principle of JW-180T Iron Carbon Voltage Drop Detector developed by Jingwei Technology is to use full-bridge high-frequency constant-current power supply as the core current output, which is designed for the external load change, keeping the output current constant through internal adjustment, to avoid the current change or attenuation due to load change.

There is a phenomenon in the industry of using DC welding machines to check the quality of cathode assembly. The reason is that the testing principle of the welding machine is the output of a voltage-stabilized source. This output can ensure that the voltage remains unchanged when the load (output current) changes, and the current output also changes accordingly, that is, the output current is not a constant value. DC welding is mainly used in the welding industry, and the requirements for constant current are not high. The attenuation of the current also changes uncertainly with the external load, and there is no basis for comparison and calculation.

• Multifunctional switch: Test current 200A/400A, test time can be switched.
• Accurate measurement: Adopting the latest power supply technology, it can continuously output large current for a long time.
• It overcomes the technical problems of unstable current and inaccurate measurement results of similar products.
• Strong anti-interference ability: under severe interference conditions, the display reading is stable.
• Printing function: no need for on-site data recording, test data can be printed.
• Easy to carry and move: small size and light weight.
• It has the function of 4G wireless data upload and the mobile phone APP can be used to view the measurement data.
• It has the function of providing data-driven interfaces for various types of enterprise databases.