OPERATION
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OPTISYS TSS X050 SERIES
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4.3.4 Calibration using a reference instrument with process samples
The device is parameterised using the function keys on the display. The operating steps can be
found in the chapter "Calibration menu".
Please proceed as follows to perform a calibration using a reference instrument with
process samples:
1
Check that the device is set to the required measuring principle (absorption / turbidity).
2
Reset the calibration to the factory calibration ("rst") ( refer to
Reset to factory calibration
on
page 20) and save the reset by selecting "SAVE = Yes".
3
Prepare a table (see below the example) for e.g. 4 different process samples.
4
Enter the values of the process samples measured by the reference instrument in the target
values of the table. The device must show these values after successful calibration.
5
Use the device to consecutively measure the process samples and enter the actual values dis-
played by the device in the table. Avoid incorrect measurements by carrying over the solutions,
by flushing and thoroughly drying the instrument between the respective measurements.
6
Transfer the values from the table into the device as follows:
- define the number of calibration points "cdef"
- enter the known target values of the process samples "cj1...cj6"
- enter the determined actual values of the process samples "cal1...cal6"
7
Confirm the entries by selecting "SAVE = Yes".
To check the calibration, re-submerge the sensor into the process samples. If the device shows
the target values, the calibration was successful.
Example table for process samples
CAUTION!
Make sure that only authorised and trained personnel perform changes to the calibration.
INFORMATION!
Incorrect settings in the parameters may result in the output of incorrect measured values and
switching points.
Process
samples
Known target value of
the process samples
Determined actual
value of the process
samples
1
e.g. 250 EBC
e.g. 234 EBC
2
3
4
INFORMATION!
Make sure that the used process samples cover the required measuring range as far as
possible.