Xylem HandyLab 680 - Manual (Page 53)

HandyLab 680 Operation
53 ba77041e01 03/2014
4.7.7 Carrying out a manual calibration (ConCal)
Make sure that in the sensor menu, Buffer menu, the ConCal buffer set
is correctly selected (see section 4.7.3).
Use any one to five buffer solutions in ascending or descending order.
Note
If single-point calibration was set in the menu, the calibration procedure
is automatically finished with the measurement of buffer solution 1 and
the calibration record is displayed.
1 In the measured value display, select the measured parameter
pH or mV with .
2 Start the calibration with .
The calibration display for the first buffer appears (voltage dis-
play).
3 Thoroughly rinse the IDS sensor with deionized water.
4 Immerse the IDS pH sensor in buffer solution 1.
5 For measurements without temperature sensor:
Measure the temperature of the buffer manually and enter it
with <
><>.
6 Start the measurement with
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VariCal