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Pegasus R Iss.07 – 08/13
Audit Calibration
Having established confidence in the optical bench system and the optical pyrometer.
The calibrated source, Pegasus 'R' was set to the first calibration temperature and allowed to stabilise. The optical
pyrometer was placed in its holder as shown in fig. 19071.
The controller temperature, the indicated source temperature and the optical pyrometer temperatures were noted.
From the calibration certificate the radiance temperature was calibrated.
The difference between the radiance temperature and the optical pyrometer temperature gives the error of the
optical pyrometer reading within the uncertainty stated.
Results obtained at 5 temperatures are tabulated over-leaf.