Xylem ProLab 4000 MULTIPARAMETER BENCHTOP METER - Manual (Page 87)

ProLab 4000 pH
87 ba75646e02 01/2010
7.3.3 Calibration settings and calibration data
In the Calibration menu, you can
z set the calibration interval,
z define the calibration type and
z view the calibration data.
Menu item Setting Description
Calibration
– pH calibration type
– AutoCal ( ) Calibration with commercial buffer sets.
The buffer set is selected with the next
menu item (Buffer sets)
– Buffer sets DIN ( )
TEC
... Buffer sets to be used for pH calibration.
For details, see page 74.
– VariCal ( ) Calibration with any buffer solutions
– Slope in mV/pH ( )
% Unit of the slope.
The % display refers to the Nernst slope of
-59.16 mV/pH ([determined slope/Nernst
slope ] x 100).
– Zero point in mV ( )
pH Unit for the zero point.
– Calibration interval... 1 ... 999 Calibration interval... for the pH electrode
(in days).
The meter reminds you to calibrate regu-
larly by the red frame around the CalClock
in the measuring window.
– Calibration history... Displays the calibration history of the last
calibrations.