Changes in product can cause false rejects
-
where the detector thinks there
’
s metal in the product but it
’
s the
signal from the product itself that causes the reject. So, it
’
s really important to trial different batches of product,
to make sure the detector only rejects product with metal in it (or the test pieces). Failure to do this, will mean
that the team running the detector get used to false rejects and the confidence in the detector will be lost
–
when this happens you run the risk of product with metal being dispatched, as the team may think it
’
s just the
detector playing up again.