Please see response below received from Mike Dawe about settings:
MHRA take a more simple approach than UKAS. The minimum expectation is that probes are appropriately calibrated against a traceable standard, we would expect an accuracy of at least +/- 0.5°C on fridge probes and at least +/- 1°C on ambient probes. As long as that accuracy is achieved MHRA don’t have an expectation that the uncertainty is accounted for when setting the alarm limits. We are aware that UKAS do often ask for this and wouldn’t have a problem if a site had adopted this approach i.e. alarm settings should take into account the probes MOU i.e. if its 0.5 at 2 and 0.5 at 6 then the alarms should be set, tested and validated at 2.5 and 5.5. I hope that makes sense (please make sure they are set the correct way around)?


bw
Rashmi