Our business has a section which does calibrations of customer ruled scales and other 2D images, and some % reflectance and % transmission photometric work.
We have a newly hired guy who has a standard cal shop background (mics, calipers, voltmeters, etc.) who says that when we calibrate our measuring equipment (we do almost all of this in house) it is not worth the time it takes to do a repeatability check (of at least 10 repeats (or 30 if they are not time consuming)). His stance is that if it meets the pass/fail specs, then all is ok.
My question for the forum members that are actively doing metrology or in a calibration lab is;
1) Is it normal practice for your lab to do routine repeatability checks on your measuring equipment? At normal calibration intervals?
2) If so, how many repeats? How often?
3) What kind of measurements do you do for the equipment that has repeat checks done (linear measurement, % reflectance, voltage, etc.)?
4) are the repeat test values recorded?
I would like as many answers as possible, as I suspect some do and some don't and I would like to get an idea of the % of each.
Thanks!
We have a newly hired guy who has a standard cal shop background (mics, calipers, voltmeters, etc.) who says that when we calibrate our measuring equipment (we do almost all of this in house) it is not worth the time it takes to do a repeatability check (of at least 10 repeats (or 30 if they are not time consuming)). His stance is that if it meets the pass/fail specs, then all is ok.
My question for the forum members that are actively doing metrology or in a calibration lab is;
1) Is it normal practice for your lab to do routine repeatability checks on your measuring equipment? At normal calibration intervals?
2) If so, how many repeats? How often?
3) What kind of measurements do you do for the equipment that has repeat checks done (linear measurement, % reflectance, voltage, etc.)?
4) are the repeat test values recorded?
I would like as many answers as possible, as I suspect some do and some don't and I would like to get an idea of the % of each.
Thanks!