Romer arm 3mm probe accuracy

Hello all,

I am having a **** of a time trying to get descent numbers measuring inside Ø with my 3mm probe. I had recalibrated it and the results were good but the results haven't changed when applied to the part. Measuring about .005" on inside diameters and .003" on outside diameters. I was wondering if the probe file had been corrupted. Has any one else had similar problems?? Any advice is appreciated.

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bharpold over 10 years ago

I have seen this happen in 2 different instances.

1 was where there was a bad encoder in the arm.

The other was when I was measuring large diameters where I couldn't pick up enough of data from the feature (less than 180 degrees around the circumference) or if I was using then entire envelope range of the arm.

The question would be is it consistently giving these results across all diameter sizes? Do you have a small known diameter you can verify?

Also what arm are you using?
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bharpold over 10 years ago

I have seen this happen in 2 different instances.

1 was where there was a bad encoder in the arm.

The other was when I was measuring large diameters where I couldn't pick up enough of data from the feature (less than 180 degrees around the circumference) or if I was using then entire envelope range of the arm.

The question would be is it consistently giving these results across all diameter sizes? Do you have a small known diameter you can verify?

Also what arm are you using?
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