Xylem ProLab 4000 MULTIPARAMETER BENCHTOP METER User Manual

Page 85

ProLab 4000

ba75646e02

01/2010

Continuing with two-

point calibration

Using [OK], confirm the Finish with 1-point calibration infotext
and take over the new calibration values.
The calibration record is displayed and output to the interface.
The calibration procedure is finished.
or

Continue the calibration with [Continue].
or
Cancel the calibration procedure without taking over the cali-
bration values with [Cancel], or .

Note
For single-point calibration, the meter uses the Nernst slope (-
59.16 mV/pH at 25 °C) and determines the zero point of the electrode.

When measuring without temperature sensor:
z Measure the temperature of the standard solution using a

thermometer.

z Open the setting window for the temperature value with

[Man. temp.].

z Enter the temperature and confirm with [OK].

Thoroughly rinse the electrode with distilled water.

Immerse the electrode in buffer solution 2.

Start the measurement with [Continue].
The measured value is checked for stability (Stability control).

Wait for the measurement with stability control to end.
or
Terminate the stability control with [OK].
The pHX calibration window for the according to buffer solution
pops up and the Finish with 2-point calibration infotext is dis-
played.

Using [OK], confirm the Finish with 2-point calibration infotext
and take over the new calibration values.
The calibration record is displayed and output to the interface.
The calibration procedure is finished.
or

Continue the calibration with [Continue].
or
Cancel the calibration procedure without taking over the cali-
bration values with [Cancel], or .