It must be determined whether fans for distributing air ions are compatible with the work environment. If ionizers that require airflow are chosen, they must depend on available airflow or include fans in their design. Some ionization devices require airflow to operate properly while others do not. Each of these methods is used in a variety of ionization products and applications. Corona ionization is commonly found in 3 different forms, alternating current (AC), steady state direct current (DC), and pulsed DC. An electrostatic field is created around the point or wire that can move ions to the work area or conversely some type of airflow can be used to move the ions more efficiently. Air ions can be produced by a phenomenon called “corona discharge” where a high voltage is applied to a sharp point or to the length of a wire. As a result, the static electricity that has built up on products and equipment is neutralized. When the ionized air comes in contact with a charged surface, the surface attracts ions of the opposite polarity. All air ionization systems work by flooding the atmosphere with positive and negative ions. Ionizers actually make the air sufficiently conductive to dissipate static charge on both insulators and isolated conductors. Electrostatic Sensing & Process MonitoringĪir ionization is increasingly being used to control or neutralize static charge found in critical environments.
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