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-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls
Sent: Wednesday, April 15, 2015 1:23 PM
To: [log in to unmask]
Subject: [TN] Viscosity Cups
Good afternoon all,
I have a silly question. We conformally coat using a common solvent based acrylic coating. One process control method is to periodically measure coating viscosity using a Zahn #2 cup, which works well for this particular coating that has about a 55-60 second flow. I am finding that when this coating is thinned down for spray, the times are down in the 15-18 second range and the variation is increasing.
So, my question - is there a style of viscosity dip cup, e.g. Ford, DIN, etc., that is more amenable to thin viscosity coatings? It is understood that a precision instrument like a Brookfield viscometer would be preferrable, but production is NOT going to let me get a few dozen of them.
Thanks.
Doug Pauls
Principal Materials and Process Engineer Rockwell Collins
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