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 <ESC> 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 <OK> 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 <OK> until the Start measurement
display appears.
16. Confirm with <OK>.
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 ("----")