question about instruments tolerances
question about instruments tolerances
(OP)
I am considering a Checkweigher machine to detect missing parts in a assembly. The assemblies have between 3 to 6 different parts. The smaller parts weight around 3 grams.
The assemblies weight variability is up to 0.5 g. What process tolerances should I use? What checkweigher accuracy should I need?
The assemblies weight variability is up to 0.5 g. What process tolerances should I use? What checkweigher accuracy should I need?





RE: question about instruments tolerances
RE: question about instruments tolerances
In both cases, the issue is not how you measure the weight and determine that there's a missing part; you need to have process controls that prevent that from happening and you need to have in-process checks that assure assembly completeness at various steps along the way.
By way of analogy, do you think it's reasonable to weight an automobile to determine if it's missing its engine or transmission?
TTFN
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RE: question about instruments tolerances
The checkweigher if for verification purpose. Others controls are or will be in place. OF all the controls mechanims I want to know the required accuracy.
RE: question about instruments tolerances
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