HI Paul,

i do read your blog for many queries that arise during work course.
they are very helpful. Thank you! :-)

i have a question...during area or controlled chamber tempertaure mapping studies.
is it a right practice to determine hot and cold zones during requalification (every year) temperature mapping for placing a continous monitoring probe?
what if these hot/cold spots change every year?
if the chamber already has more than one monitoring inbuilt sensor installed inside...periodic requalification is required?!