4. Calibration and Check
28
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
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.
5
Check accuracy.
z
Press “Next”.
Accuracy check is started.
Check air bubbles.
Drying tube
Sampling tube
Put in.
Summary of Contents for DA-640
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