I have weights that are listed as Class F, but the calibration vendor states the weights are Class 7. The difference being Class 7 has a wider tolerance than the Class F. I haven't worked much with mass and weight and I'm not certain exactly what is difference. Can someone point me in the right direction to find information.
Class 7 is an ASTM classification, Class F is OIML classification. Get clarification from OEM on correct class. Special calibration to say "Calibrated to meet XYZ specifications" or possibly chart them. Have a good documentation so the next tech has the info needed.
(Ref: See page 16 of 58 https://www.ricelake.com/docs/prodinfo/ps_catalog/sections/reference.pdf )
Good luck
http://www.ricelake.com/docs/prodinfo/ReferencePDFs/ASTM_reference.pdf
The main thing is what does the customer want and then document that. You are just reporting the values to them and if they are within the tolerance they want. Just document the tolerance that they want so that the next technician does not have to ask questions about it. Remember the golden rule the customer is always right (even if the customer is an idiot). I have gone out of my way to keep customers happy more times than I can count.
Thanks for the responses and advice. For future reference the place I work is the "customer" and I, along with couple others, service all instruments for which the capability exists here.