YSI IQ S ENSOR N ET NitraVis 70x IQ - Manual (Page 29)

NitraVis 70x IQ
Measuring / Operation
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Flowchart
Fig. 4-3 Overview of Sensortest/Zero adjustment and user calibration.
After cleaning several times
without significant change of
the sensor assesssment:
Carry out zero adjustment
Check user calibration
Sensor OK
Operating error or defective sensor
(Sensor blocked for measurement)
Sensor check
(Standard)
OK Error
-40 ... +40 < -40 or
> +40
Operating error or defective sensor
Zero adjustment
Error OK
After several zero adjustments:
Reset to:
Factory zero adjustment or
last valid user zero adjustment
After several sensor checks:
Cleaning the sensor
Sensor check
(H2O dist.)
Assessment number
Rinse the measuring chamber
with ultrapure water several times
Clean the measurement windows
Carry out a sensor check (H2O)