KROHNE OPTISYS SLM 2100 EN - Manual (Page 55)

OPERATION
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OPTISYS SLM 2100
www.krohne.com 03/2014 - 4002737302 - MA OPTISYS SLM 2100 R02 en
5.7.9 Calibration
There are two forms of calibration. First is the zero point calibration, which has to be performed
if the measured value shows discrepancies in the low measuring range. Second is the calibration
of the concentration which has to be performed if the sensor shows discrepancies in the middle
or high measuring range.
Both types of calibration can be performed individually. However, for a full
recalibration, both calibrations have to be performed in the following order:
1. Zero point calibration (Step 3)
2. Calibration of the concentration (Step 3a, 3b and 3c)
Step 1: calibration
Step 2: move sensor
INFORMATION!
Before leaving the factory the sensor is calibrated to offer an accurate measurement. Though it
might be necessary to re-calibrate the sensor during the lifetime of the system.
INFORMATION!
Even after the installation, a recalibration might improve the accuracy.
INFORMATION!
As soon the user enters the calibration menu the current outputs are frozen. After completion of
the calibration cycle and return to measuring mode, the current outputs are reset to "0". If the
user needs the actual reading right away, please press arrow down to trigger a manual
measuring cycle.
Press >>>> for more than 2.5 seconds, then release the button.
Press
or until the main menu setup setup setup setup is highlighted.
Press >>>> to enter the chosen menu.
Press or to select maintenance maintenance maintenance maintenance.
Press >>>> to enter the chosen menu.
Press or to select calibration calibration calibration calibration.
Press >>>> to enter the chosen menu.
set cal. position? set cal. position? set cal. position? set cal. position? is shown.
• Press or to choose on on on on.
• Press ^ ^ ^ ^ to enter the chosen menu.
Now the info please wait please wait please wait please wait is shown and the sensor moves in the start position.
A submenu with move sensor move sensor move sensor move sensor, calibrate zero calibrate zero calibrate zero calibrate zero and calibrate conc. calibrate conc. calibrate conc. calibrate conc. is shown an explained in the following
tables.
Press or until the submenu move sensor move sensor move sensor move sensor is highlighted.
Press >>>> to enter the chosen menu.
Press or to move the sensor in the desired position.
For calibrate zero - Put the sensor in a bucket with deaerated clean water. Cover the bucket
with a cloth e.g. in order to protect the sensor from sunlight.
For calibrate conc. - Move the sensor into sludge layer to which the sensor shall be calibrated
on.
Press ^ ^ ^ ^ to get back in the submenu.
.book Page 55 Wednesday, April 30, 2014 1:39 PM