K-Patents PR-23-SD Generation 1 - Manual (Page 30)

Document/Revision No. BP-EN-SDGEN1 1.0 Effective: April 1, 2013
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Figure 17 Changes in concentrations during succesful prism wash
5.2 Calibration Check
Extract 3-5 samples in a couple of days’ time. Results from these samples can be used as a
reference for calibration.
In case there are deviations from the lab results, check that washes are functioning correctly
(see Prism wash test in the commissioning checklist).
When comparing lab results if there is a consistent offset, perform a BIAS adjustment from
CALIBRATION menu. For more information, see chapter Calibrating the concentration
measurement in K-Patents PR-23 Instruction Manual.
Figure 18 BIAS