Re: Static charge and digital scales.

From: Tapio Linkosalo <tapio.linkosalo_at_iki.fi>
Date: Tue, 16 Jan 2018 17:35:58 +0200

On 16/1/2018 16:46, don_at_slusarczyk.com [Indoor_Construction] wrote:
> I am curious as to what others do in regards to eliminating effects of
> static charge when weighing on a digital scale. Since it is winter for
> me and humidity is low I am getting some static charge on wings and
> tails which cause the weights to vary. For the short term I have
> constructed a balsa "tower" that hold parts about 10" above the scale.
> That seems to work for smaller wings but a F1D wing needs to be much
> higher to get the scale out of the field. I only see this on plastic
> covered parts which makes sense. A motor stick or uncovered frame
> weighs are ok. I have tried Bounce anti cling dryer sheets but that
> takes time to discharge. Was hoping for a quick solution to discharge.
> I see they sell anti static devices for lab use but they are $2000 .
> Also read ionizers can work. Just curious as to what others have done.

I have not found static electricity to be an issue, but even the
slightest air currents impact the wings and tails when weighting.
Anyway, I use my model stand also as weight stand: the scale has similar
3mm ID aluminum tube as my model stand foot, and thus I can plug the
stand onto the scale, putting anything that needs to be weighted to the
foam holder at the end of the 20cm (8") shaft. Also when weighting wings
or tails or whole model, I put them to the stand lifting surfaces
vertical, so that air currents lift sideways, not up or down. This seems
to result in stable readings even on a milligram scale.



-Tapio-
Received on Tue Jan 16 2018 - 15:36:05 CET