YSI IQ S ENSOR N ET NitraVis 70x IQ - Manual (Page 32)

Measuring / Operation
NitraVis 70x IQ
4 - 12 ba75950e02 11/2012
Up to this point, you can break off the calibration procedure at any time
with the key. The system continues to work with the old calibra-
tion data. The maintenance condition, however, has to be switched off
again in any case.
After starting the calibration with the key (step 16.) you can no
longer cancel the calibration procedure.
Result after Sensor check
(H2O dest.)
If the rating number is not in the zero range:
Repeat the cleaning procedure and the Sensor check (H2O dest.) until
the rating number no longer changes significantly.
If the rating number is still outside the zero range, a new zero adjust-
ment is necessary.
Result after Zero
adjustment
If the result is erroneous, clean the sensor and all equipment once
again. Then carry out a new Zero adjustment and when doing so make
sure the conditions are absolutely clean.
15. Confirm each checklist with until the Start measurement
display appears.
16. Confirm with .
The measurement is started. After the end of the measurement
the result appears. With the Zero adjustment , the result is
entered in the calibration history at the same time.
Rating number Meaning
Zero range
(-40 ... +40)
Sensor check (H2O dest.) successful (OK)
(0 = no deviation)
Positive number
(+40 ... +1000)
Measured values were too low.
Possible cause:
The measurement windows are contaminated.
Negative number
(-40 ... -1000)
Measured values were too high.
Possible cause:
During the last zero adjustment, the measure-
ment windows were contaminated more than dur-
ing the current sensor check.
Result Meaning Sensor released for
measurement
OK Zero adjustment successful. Yes
Error Zero adjustment not success-
ful.
No ("----")