Xylem Lab 970 User Manual
Page 27
Lab 970
Operation
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Note
If the error message E3 appears, refer to
Stability control
During calibration, the stability control is automatically activated.
Note
This method of automatically determining the cell constant by
calibration in the 0.01 mol/l KCL control standard can only be used for
measuring cells with cell constants in the ranges
0.450 ... 0.500 cm
-1
, 0.585 ... 0.715 cm
-1
or 0.800 ... 1.200 cm
-1
.
2
Press <OK> or <CAL
_
> to confirm the selection of CAL
CELL.
3
Immerse the measuring cell in the control standard solution,
0.01 mol/l KCI.
4
Start the calibration with <OK>.
The determination of the cell constant with stability control
starts.
The
display indicator flashes until there is a stable signal.
The determined cell constant is displayed for 10 seconds. The
meter stores the cell constant automatically.
After this the meter switches to the measuring mode.