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Date: | Wed, 24 Mar 2010 07:59:03 -0400 |
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Contact Trek Inc in upstate NY as they make a variety of static
voltmeters (3M and others rebrand their products). Perhaps they will
have advice for you on what can be done.
One suggestion, as I had the opposite problem years ago, doing
consulting on a manufacturing line using Binks sprayers to spray
adhesive on lids for 55 gal food barrels. Automation then placed o-
rings into the adhesive.
No adhesive then the next step placed the lids on the barrels and the
o-rings would fall into the food. Oops!
Problem was the sprayers clogged periodically. So the company had a
person watching the sprayers....
My solution was to charge the sprayer tips with 10v then use a Trek
electrostatic voltmeter to measure the charge deposited on the lids.
No charge, stop the line and clean the spray tips.
Watching job eliminated.
You have the reverse problem so I would suggest grounding the air jet
tips then measure with the Trek voltmeter.
Bob Landman
Sent from my iPhone
On Mar 23, 2010, at 5:50 PM, "Thayer, Wayne - IIW"
<[log in to unmask]> wrote:
> We have a number of "airbrush" low pressure nozzles around here for
> spraying solvents on reworked boards and for drying them off. I
> know that nozzles can create static, but I have had no problems to
> date and have had no problem with dust sticking to the boards when I
> dry them off this way.
>
> I haven't been able to find anything on trying to quantify static
> from nozzles used in this way. Does anyone have data? Moving to
> ionized blow-off for drying the boards would be painful, as that
> means yet more equipment in our small cleaning stations.
>
> Wayne Thayer
>
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