Factors Affecting The Performance Of RH Device And Ionizer

1) Both RH controlled static eliminator and air ionizer suffer effectiveness drop as the air streams travel a longer distance.

  A.    Root cause(s) in air ionizer effectiveness drop:-

Primary factors are:-

i.) Positive and the negative air ions recombination resulting in lost of air ions

ii.) Air ions dilution due to expanded volume of air space coverage of the air stream.

The combination of these two underlying factors in air ionizer clearly explains why air ionizer performance drops drastically even at small airflow distance changes. This is the pitfall and limitation of an air ionizer. 

B.     Root Cause(s) in RH static eliminator effectiveness drop:-

Primary factor is the expanded volume of air space coverage resulted in diluted humid air. There is also a minor portion of humidity lost through the humidity diffusion. This drop in effectiveness is less drastic and more gradual in nature compared to the air ionizers. Such performance behavior make it easier and more controllable offering better opportunity to successfully manage the static charge mitigation process. 

2) Both RH controlled static eliminator and air ionizer need to install correctly by choosing the path with minimum air turbulence to achieve optimum result. RH controlled static eliminator is more user-friendly due to the absence of volatile positive and negative ions. 

However, there can be striking differences in the static elimination capability and performance as highlighted in the next section of this article. 

RH static eliminator:- Once released from the equipment, humid air can travel straight, bent or circular direction (with a proper air guide) in open space or travels inside a tubing without any significant lost of effectiveness to achieve targeted objective. No special technical skill is required in this easy-to-understand equipment performance. 

Ionizer:- Ionized air travels only in a straight line like a torchlight and must hits directly onto the targeted spot to be effective. Once released from the equipment and hits on any nearby object, its highly volatile positive and/or negative air ions quickly used up or recombined leading to drastic drop in effectiveness. Managing active positive or negation ions in ionized air stream is difficulty due to its volatile dis-composition nature. The surrounding adjacent parts and fixtures in a typical microchip testing or processing machine must also be carefully assessed before an air ionizer installation location is determined. More technical skill is required in the understanding and use of ionizing equipment to achieve maximum effectiveness.