IM 12A06S01-00EN-P
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8.2.3 Sample
With the sensor in situ, a sample can be taken for laboratory analysis. Sample calibration
records the time and reading, and holds these in memory until the analysis has been
completed. The laboratory data can then be entered in SA11 device by HOST regardless of
the current process value, without the need for calculations.
When sample calibration is made with temperature compensation activated, the types of
temperature compensation for laboratory analysis equipment should be matched. Use of
a different type of temperature compensation between equipment causes an error. The
standard conductivity meter to be used should always be based on the accurate and same
temperature compensation calculation method.
8.3 Temperature coefficient (TC)
For a correct conductivity reading in case temperature compensation method is TC, the
temperature coefficient can be corrected. Simply put the sensor in the process and allow
the sensor to reach stable readings for both temperature and conductivity. The HOST
system will show the calculated conductivity value at Tref, and if not the same as the
theoretical value the user only has to input this value when requested. The SA11 device will
calculate the new TC value.
Note:
Before calibrating the temperature coefficient it is important to first calibrate the cell constant.