wtw NitraLyt 700 IQ, Operating Manual, Page: 41 / 61

NitraLyt
®
700 IQ Calibration and measuring
4 - 21 ba75397d03 12/2004
A calibration can have the following results:
Possible results of the
calibration
Note
Information on the contents and structure of the log book and how you
can call it up is given in the L
OG BOOK
chapter of the IQ S
ENSOR
N
ET
system operating manual.
Viewing the calibration
data
The calibration data can be viewed as follows via the Calibration history
display option.
Display after the
calibration Log book entries
(meaning/actions)
Measured value display Sensor was successfully calibrated.
Slope and drift potential are within the valid
range.
For calibration data, see calibration history.
"----" Sensor could not be calibrated.
Slope and/or drift potential are outside the
valid range.
Sensor blocked for measurement.
– Service the sensor immediately
(see chapter 5).
– View the calibration history.
– Check the calibration conditions and cal-
ibration standard.
Note:
After determining an invalid slope, the sen-
sor can be further operated with a subse-
quent valid single-point calibration as a
stopgap solution until the electrode is
exchanged. The last valid slope is used in
the measuring operation. With the single-
point calibration, a corresponding note
appears quoting the slope that is used.
1 Select the relevant sensor in the measured value display on
the terminal.
2 Press the
g
key. The Display/Options menu appears.
3 Select the Calibration history of selected sensor menu item.
The data of the last calibrations of the sensor appear on the
display.