Why do the calibrations performed on mysurface plate seem to vary?
Why do the calibrations performed on mysurface plate seem to vary?
I am Dr.Jack Zhu, welcome to follow me for more information about the precision granite products.
There are several possible causes for variations between calibrations:
? The surface was washed with a hot or cold solution prior to calibration, and was not allowed sufficient time to normalize
? The plate is improperly supported
? Temperature change
? Drafts
? Direct sunlight or other radiant heat on the surface of the plate. Be sure that overhead lighting is not heating the surface
? Variations in the vertical temperature gradient between winter and summer (If at all possible, know the vertical gradient temperature at the time the calibration is performed.)
? Plate not allowed sufficient time to normalize after shipment
? Improper use of inspection equipment or use of non-calibrated equipment
? Surface change resulting from wear
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