4. Calibration and Check
24
3
Dry the cell
z
Wipe off sampling tube with waste
cloth and put it in drying tube.
z
Press “PURGE” twice.
A message of “Auto drying” will
appear, and equipment starts to dry
the cell.
Once completed, equipment beeps
and pump stops running.
4
Air calibration
z
Press “Start Calib” to start air
calibration.
Once completed, equipment beeps.
A message of “Start water calib” will
appear.
5
Sampling of pure water
z
Adjust sample/drain lever to “Sample.”
z
Adjust sampling speed controller to
slowest (scale 0).
z
Press “PUMP” to start sampling of pure
water.
z
Slowly turn the controller until you
reach optimal speed for sampling.
* Do not stop turning the controller
abruptly. Doing so may generate air
bubbles in the sample.
z
Check through cell window to make
sure there is no air bubble in the cell.
z
Press “PUMP” again to stop sampling.
Check air bubbles.
Drying tube
Sampling tube
Put in.
Summary of Contents for DA-640
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