Ionization static eliminator
Ionizing static eliminators (ionizers) can use ionized air to discharge static charges or dissipate static charges on insulating objects that cannot be effectively grounded in places where they cannot be effectively grounded. Ionizers are also useful for dissipating electric charges in areas where spraying processes such as sandblasting and painting have been awakened. The three methods commonly used for air ionization are radioactivity, dot and electrostatic combs. The radioactive material provides A particles that ionize the air. The electrical method uses a high-voltage square wave signal that is air ionization. The principle of an electrostatic comb is similar to that of a lightning rod. It uses the concentrated points on the tip of the needle to ionize the air. This method is based on the point from the earth's surface and self-repulsion, so that the charge is deposited on the surface with the smallest radius of curvature. The air from the ionizer should contain approximately equal amounts of positive and negative ions. The imbalance of positive and negative ions can cause residual voltage across the ionization area. The placement of the ionizer should be determined according to the manufacturer’s recommendations or through experience. The manufacturer's specifications usually provide information on the relationship between the decay time and the distance and angle between the ionizer and the charged area. It may take a few seconds or even a few minutes for the ionizer to dissipate the charge, depending on the amount of charge and the distance of the charge from the source. In order to neutralize the charge on the charged area, the ionizer should work for at least 2 to 3 minutes. Some ionizers have extremely high residual voltage, which can damage some ESDS products. In order to adaptively control ESD, when selecting and placing an ionizer, it is necessary to measure the residual voltage on the protected area and compare it with the voltage sensitivity level of the ESDS product.