I got shocked from the light switch last night. I saw the little arc from my finger to the light switch and felt the extra voltage behind it. It jump-started my memory of stories from customers about what static electricity has caused in their surroundings...

People tell me about seeing the arc hit someone from a foot away - OUCH! And then to have someone speak about getting hit anywhere unmentionable - that just adds to the ouch factor. They have seen holes burned in clothes and heard the chatter from employees every time they get another shock because of the work they do. Static has a way of getting your attention.

Due to the colder, drier weather for us this time of year we see an increase in static electricity. We deal with many calls to solve people getting shocked but the majority of the calls I get are about problems on equipment or processes. When troubleshooting a static issue here are the things I consider first:
1. Is this a manual or automated process?
If it is a manual process then your choice will be the Ion Air Gun. This is
the hand held, operator activated air gun which blows ionized air at
a target when the trigger is pushed. If you would like the static elimination
to be automated move on to number two.

2. What size area do you need to cover, what size is your target?
All of our static eliminators use the same principle of design and
operation and all use the same power supply. But they all produce a
different size and shape of static elimination air.

I'll begin with the cone shaped, small area products. The Ion Point is the non-air assisted individual emitter point Ionizer which produces a small cloud of ions, about a 2" sphere. It is also the basis of the electrical cable for like products as the Ion Air Jet used to produce an air assisted 6" diameter cone at 18" from the target. The Stay Set Ion Air Jet adds a magnetic stand for applications which may be on a conveyor or assembly table. The Ion Air Cannon will cover a larger are and produces a 6-3/4" diameter cone at 18" from the target. The ion Air Cannon is also a good choice for a more remote mounting location at has the ability to flood a larger area like those where operators may be present. Ion Air cannons mounted in a couple locations above an operator has been successful in elimination personnel shock for more than one customer. Ion Air Cannons are also a good fit for a bench top application because it has a small footprint and a positioning stand.

Next we have the Ion Bars which cover a long linear area, Ion Bars are made from 3"-96" and can reach up to 119" total. Without air assistance the Ion Bars too, must be mounted within 2" of their target and generally deal with webs moving at speeds of 200 fpm or less. The Ion Bars are mounted to a Super or Standard Air knife to make a Super Ion or Standard Ion Air Knife . These air assisted products can deliver higher levels of ions to faster moving webs, and also cover wide general areas. The air behind these products helps deal with high speed applications by having enough force to break a boundary layer of air which is created by high speeds Super Ion Air Knives are also made up to 96" long.

Then there is the Super Ion Air Wipe, more of a niche product used to supply a 360 degree blow off from extruded shapes, pipe, tube or anything you can pass through the inside diameter.

There are other areas to be discussed such as specific positioning, air connections and pressure, but starting with the above steps will get you very close to the end result. Contact us for confirmation along the way as you proceed toward a static elimination solution.

So quit taking those static shocks, you may not remember to call EXAIR.

Kirk Edwards
Application Engineer
kirkedwards@exair.com

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Comment by Leslie Langnau on December 28, 2010 at 6:31am
Ah the "fun" of the  triboelectric effect. 

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