This research to represent a linear integer mathematical
model applied to evaluate temperature uniformity. In general,
when considering the temperature test chamber as a constant
temperature chamber that has achieved an arbitrary uniform
temperature, the uncertainty at that achieved temperature can
be separated into the two factors of chronological temperature
fluctuation in time, and spatial temperature fluctuation, referred
to as temperature uniformity. The numerical illustrations and
results substantiate that the model proposed is useful to
simultaneously consider x and y axis when determining
temperature uniformity. Moreover, we found that the linear
model made a significant impact on uniformity of the chamber.
It was, however, suggested the laboratory and customer have to
agree the scope of the calibration requested, duration of the
test, (previous stabilization and recording time), parameters to
be determined (calibration of the set point, study of spatial
distribution of temperature/humidity, study of temporal
stability, etc.) loading conditions, etc. These calibration
conditions have to be recorded by the laboratory.