Stratos Multi E401N
125
6.6.5 Calibration Mode: Product
Calibration by Sampling
If the sensor cannot be removed – e.g., for sterility reasons – its slope can be determined by
“sampling”. The current “Saturation” measured value is saved in the device for this purpose. A sample is
taken directly afterward at the measuring point. The reference value is entered in the device. Stratos
Multi calculates the sensor’s correction values from the difference between the measured and refer-
ence values, and corrects the zero point in the event of small saturation values, the slope in the event
of large values.
Calibration Procedure
NOTICE!
Measure the reference value at temperature and pressure conditions similar to those of the
process.
Calibration
[I] [II] … Oxy
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 “Product” calibration mode and press
enter
to confirm.
✓
Process variables saturation, concentration, and partial pressure configured as in
Cal Presettings
.
02.
Change the process variable, if required.
03.
Prepare for sampling.
04.
Start with the
right softkey: Next
.
Product calibration is performed in 2 steps.
Step 1:
05.
Take sample.
✓
The measured value and temperature at the time of sampling are displayed.
06.
Save with the
right softkey: Save
.
Exception: Sample value can be determined and entered on site:
Left softkey: Input
Step 2: Lab value has been measured.
07.
Open the Product Calibration menu again.
08.
Enter reference value ("Lab value").
09.
Confirm with the
right softkey: Next
or repeat calibration with the
left softkey: Abort
.
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.