Hach-Lange POLYMETRON 9245 User Manual - Manual (Page 63)

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Operating Instructions
Upon completion of the rinsing step, the analyzer is ready for
the first manual step in the cycle.
Place the lid of the overflow vessel on the side and pour
approximately 200 mL of the solution into the overflow vessel,
as prompted on screen. Manual introduction is complete when
the sample overflows at the back of the overflow vessel.
Place the lid back on top of the overflow vessel and select OK
to start the measurement.
The display switches back to the main measurement screen
and displays the measurement value.
The progress bar at the top of the screen monitors the
measurement time of the sample.
If you wish to abort the process at any time during the
measurement cycle, select Stop.
Once measurement of the solution is complete, the measured
value and time will be displayed against verif. s. This should
be almost identical to the value entered in the VALID. SOL
field previously.
The value displayed in gap, will be the percentage difference
between the concentration of the verification solution entered
in the VALID. SOL field, and the concentration measured by
the instrument. If this value is too high, then a calibration of
the analyzer is recommended.
Once the cycle is complete, the analyzer automatically reverts
back to standard measurement mode.
Select Main to go back to the main measurement screen.