What should you pay attention to when using a static elimination device?
Static elimination devices can be divided into AC and DC. The difference between AC and DC static elimination devices is that a discharge pin of an AC type static eliminator can alternately generate positive and negative air ions. The discharge electrode is composed of a discharge pin and a ground. Ground electrodes are common to the discharge electrodes of the DC static eliminator. The discharge electrodes are composed of positive and negative independent discharge pins. Where there is no external air supply (such as fans, compressed gas, etc.), the DC type static eliminator is farther away than the AC type static eliminator. In the case of external air supply, the distance of static elimination mainly depends on the Structure, air volume, and strength of high-voltage power supply.
The difference between AC and DC static elimination devices requires special attention to the difference in ion balance. AC type static eliminators generate both positive and negative ions on the same discharge needle, so even if the discharge needle wears out after long-term use, the ion balance There will be no major changes, and the ion balance performance is better. Because the discharge needle of the DC type static eliminator is composed of separate positive and negative electrodes, the ion balance is poor when used at close range. In addition, the discharge needle is affected by the environment and the needle pollution degree will affect the ion balance, especially After long-term use of the discharge needle, the degree of wear of the positive and negative discharge needles is different, and even after cleaning, the ion balance cannot be corrected.
The discharge needle will be contaminated after long-term use, which directly affects the static elimination performance and ion balance. Therefore, the static elimination electrode section should be cleaned regularly during use, especially the DC type electrostatic eliminator discharge needle is more susceptible to contamination than the AC type. The static eliminator should be cleaned more frequently, and the degree of wear of the positive and negative discharge needles is different. Periodic ion balance testing is required, and the discharge needle should be replaced in time when the discharge needle is severely worn.