MiniRAE 3000 User’s Guide
42
Three-Point Calibration
For enhanced accuracy, it is possible to perform a second Span
calibration in addition to the Zero and Span calibrations outlined in the
previous section. Your instrument first must be set to allow this third
calibration. This requires using ProRAE Studio software and a PC, as
well as a higher concentration of calibration gas.
Note: Once the third calibration is set, you do not need to use ProRAE
Studio to allow future 3-point calibrations. Also, you can only disable
3-point calibration capability by using ProRAE Studio again.
Perform the Zero and Span calibrations. After the first Span calibration
(Span 1) is completed, the display a second Span calibration (Span 2)
can be performed. The process is identical to the first calibration. As in
the Span 1 calibration, you may exit and return to the Zero calibration
screen if you choose not to perform this calibration or to abort it.
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