Reactivating A Valid Calibration; Settings - Xylem wtw MIQ/IDS Operating Manual

Dissolved oxygen
Reactivating the cal-
ibration data
Making the settings
Setting
Measuring mode
Measuring range Con
centration
Measuring range Satu
ration
Response time t90
34
The calibration history is stored in the sensor.
The calibration history shows the calibrations of the sensor with the
mounted sensor cap.

6.2.5 Reactivating a valid calibration

®
The FDO 925 enables you to reactivate the last valid calibration or the factory
calibration. Thus you can immediately continue to measure if a calibration failed
or you suspect that the calibration conditions were not optimally met.
Reactivating old calibration data is a temporary measure. Take into
consideration that the sensor may provide wrong measured values.
Ensure the correct functioning of the sensor by checking and/or
recalibrating it.
1. Open the setting menu of the sensor (see section 6.3).
Calibration
2. In the
calibration
and then exit the setting table with
6.3

Settings

Using <S>, switch from the measured value display to the main menu of the
settings. Then navigate to the setting menu of the sensor. The procedure is
described in detail in the IQ S
Selection/Values
Concentration

Saturation

0 ... 20.00 mg/l

-
0 ... 20.00 ppm

0 ... 200.0 %
- 
30 .. 300 s

menu, select the setting
N system operating manual.
ENSOR ET
Explanation
Unit of the measured value in the measured
value display.
The measuring range is permanently set.
Response time of the signal filter.
Depending on the sample matrix, the mea-
sured values may fluctuate more or less.
A signal filter in the sensor reduces the limits
of variation of the measured value. The signal
filter is characterized by the
t90
. This is the time after
which 90 % of a signal change is displayed.
User calibration Factory
or
Save and quit
.
Response time
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MIQ/IDS
01/2024