The Answer
Perhaps an example might clarify it: the air pressure recommended for a brand of tires on a vehicle model. A newsletter informs users of the previous pressure and the recommended pressure. But, how to guarantee the user that the pressure is read on another continent with a different instrument, is correct? The answer is a science known as metrology; What are the registration and calibration systems needed to offer guarantees of a precise traceability of an instrument (for NIST or other organization). Another example might be the Chair where are you sitting. It is likely that the parts used to build and upholster or manufacture Chair, desperate in more than one site. How it is that they fit so well parts, paint or chrome plating or printing of packing is so uniform? and insurance that has gone through a good number of containers and machines.
The answer lies in repeated exact measurements from instruments for the exchange of the same string to measure the accuracy. Now well, why calibrate your Radiometry? The answer to this question lies in its use of the equipment: If you: a. Usa specific temperatures go B. Usa related temperatures Delta go C. Usa-related images with their corresponding nuances involving comparative temperatures of the displayed image D. Usa go to other data related to the instrumentation you will surely be a thermograph. If you are a thermograph, it will have greater thermal information relating correctly which can only be carried out with calibrated instruments.
Instruments not-settings, are sometimes good enough to provide an indication of who could be a hot or cold object. The fact is that it is you cannot demonstrate. Analyze your results is the fundamental reason to calibrate. If the instrument is calibrated and the customer (or his lawyer) asks: does the object in question is o so hot? does cold as you claimed? The simple answer is Yes.
