Xylem HandyLab 680 - Manual (Page 49)

HandyLab 680 Operation
49 ba77041e01 03/2014
4.7.6 Carrying out an automatic calibration (AutoCal)
Make sure that in the sensor menu, Buffer menu, the buffer set is cor-
rectly selected (see section 4.7.3).
Use any one to five buffer solutions of the selected buffer set in ascend-
ing or descending order.
Below, calibration with Technical buffers (TEC) is described. When
other buffer sets are used, other nominal buffer values are displayed.
Apart from that, the procedure is identical.
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.
4 Quit the menu with <M>.
1 In the measured value display, select the measured parameter
pH or mV with <M>.
2 Start the calibration with <CAL>.
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 <
><>.
15.03.2014 08:00