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3.4.1. Switch ON (position I) the unit with the Power switch (Fig.1/1) on the rear panel.
3.4.2. Press the Select button (fig.1/3) on the rear panel. A flashing “0.5”appears on the
display, indicating that the unit is ready to measure calibration value of the first
point, 0.5 McF.
Note! Use a thin pin of maximum diameter 2 mm for pressing the Select
and Install buttons.
Note! Shake the tube with the standard solution, if necessary. It is
recommended to use vortex, e.g. Personal Vortex V-1 plus, for
shaking.
3.4.3. Insert the tube with the standard solution, corresponding to the calibration point
value, into the socket of Densitometer (fig.2/1).
3.4.4. Press the Install button (fig.1/4). First point “0.5” value is saved in the unit memory
and the next calibration point appears, flashing 1.0 indication on the display.
Note! Calibrate as many points as possible to obtain precise results. The
minimum requirement is to calibrate 2 points closest to the working
range limits (e.g. 0.5 and 5.0 for operation within 0.5 - 5.0 McF unit
range).
3.4.5. Repeat steps 3.4.3 - 3.4.4 until the calibration is completed (one to five times, as
many times as many points the chosen calibration curve has).
3.4.6. If a standard for a step is not available, press the Select button to skip to the next
calibration point.
3.4.7. After setting the last standard value “5.0” or skipping through it, the unit exits the
calibration mode automatically. The unit is ready for operation.
Note! If pressing the Install button during the calibration process does not
cause switching to the next standard value, it means that the stand-
ard currently inserted in the densitometer socket has lower turbidity
value than the previous standard. The inserted standard solution
turbidity does not correspond to the required value (try vortexing or
shaking the standard, or replace it).
3.5. Reset to factory calibration. To reset the calibration of the unit to factory settings,
ensure that you are in the working mode and the socket of the unit is empty. Press
and hold Install key for 5 seconds. The unit displays a dot ” .“, then changes it to
“0.0”. The unit is now reset.
3.6. Switch off the unit using the Power switch (position O). Disconnect the external
power supply from electric circuit.
