Can you please help me out, i am starting to over-think things !
I work in a meat processing facility, we produce different products in the plant, we have several Metal Detectors in place and each MD is externally calibrated once a year.
The (X) Metal Detector have 2 programs they can choose from, but the Calibration Certificate for the (X) MD is conducted on the original sensitivity for the normal products that would go through it (4.0 mm for Fe).
The product that was supposed to run through (Y) MD requires a sensitivity of 3.0 mm for Fe.
My question is:
Do we need to have an External Calibration for the lower sensitivity? or as long as it is calibration on anything and they use the appropriate test units then it is fine?
My thoughts are that since the sensitivity is lower, then we need to ensure that the MD is capable of detecting the required size, whether we can do that in our daily verification of the MD and that would be enough, or we need an external certificate to show that the machine can detect that, is where I am confused.
Thanks in advance!