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21 Calibration during disinfection measurements
21.3.2 Two-point Calibration
WARNING!
Steps 7 to 8 should be carried out very quickly, since the comparison measure-
ment and the inputting of your result must be done promptly.
Step Action
1 Make sure that the sensor to be calibrated is built into a suitable fit-
ting and had enough time to run-in before the calibration was start-
ed. Be sure to observe the information in the operating manual of
the sensor with respect to operation and calibration of the sensor
type concerned and respect the stated operating conditions during
the calibration.
2 Start the two-point calibration.
Device Menu > Calibration > Digital Sensor 1 to 6 > Two-Point
Calibration
3 Now let a solution containing no disinfectant to flow through the fit-
ting (concentration value = 0)
4 The device will show the current concentration measured value for
the disinfection measurand. The user does not need to make any
entries here. Wait until the measured value displayed stabilizes
and then confirm by pressing "OK".
5 Now let a solution containing disinfectant to flow through the fitting
(concentration value > 0)
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