Stratos Multi E401N
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6.5.4 Calibration Mode: Manual
Manual Calibration Specifying a Calibration Solution
During calibration with manual entry of the conductivity value of the calibration solution, the sensor is
immersed in a calibration solution. Stratos Multi calculates a conductivity/calibration temperature pair
value. The temperature-corrected conductivity value of the calibration solution must then be entered.
For this purpose, take the conductivity value that goes with the displayed temperature from the
calibration solution TC table. Conductivity intermediate values must be interpolated.
Stratos Multi automatically calculates the cell factor.
Notes on Calibration
• Use only fresh calibration solutions. The used calibration solution must be configured.
• The accuracy of the calibration is crucially dependent on a precise acquisition of the calibration so-
lution temperature. On the basis of the measured or entered temperature, Stratos Multi calculates
the setpoint of the calibration solution from a stored table.
• Note the response time of the temperature probe.
• To determine the exact cell factor, wait for temperature equalization of the temperature probe and
calibration solution before calibration.
Note:
Note during calibration: If the measured conductance or temperature fluctuate greatly, the cali-
bration procedure is aborted after approx. 2 min. Repeat calibration if an error message appears.
Calibration Procedure
Calibration
[I] [II] … Condl
When you access calibration, the calibration values selected in the calibration presettings are used.
These settings can still be changed in the Calibration menu. If you do not want to perform calibration,
use the left
softkey
to go back one level and abort the calibration.
01.
Select “Manual” calibration mode and press
enter
to confirm.
02.
Take the sensor out of the medium and rinse it well in deionized water.
03.
Immerse the sensor in the calibration solution.
04.
Start calibration with the
right softkey: Next
.
✓
Calibration is performed.
The following parameters are displayed: Calibration temperature and response time.
05.
Enter conductivity.
06.
Continue with the
right softkey: Next
.
Result
✔
By pressing the
right softkey: Adjust
, the calibration values obtained during calibration for
calculation of the process variables are applied to the device. When using a Memosens sensors,
the calibration values are saved in the sensor.