(I renamed this thread as it was wandering off the OP's topic somewhat)
On Aug 21, 2015, at 3:24 AM, Paul Sherfield <paul@missinghorsecons.co.uk> wrote:
If your have an ISO certification, such as 9001, will state that all instruments need to be serviced/re-calibrated to manufactories recommendations. In this case, once a year.
Hi Paul, To be specific (and I am by no means an ISO 9001 expert), I believe that re-calibration is not required if a verification that is traceable back to a standard is performed regularly. In other words, if a CRM's (Certified Reference Material) reference measurements were created by an instrument that has been verified properly, then re-calibration of the field instrument is not required. This can save many thousands per year for larger organizations. regards, Steve