wtw Multi 9420 - Calibration Data

pH value Multi 9420
36 ba75964e04 04/2015
4.2.6 Calibration data
Displaying the cali-
bration data
The calibration record of the last calibration is to be found under the menu item,
Calibration / Calibration record. To open it in the measured value display, press
the <CAL_> key.
The calibration records of the last 10 calibrations are to be found in the menu,
Calibration / Calibration data storage / Display. To open the Calibration menu,
press the <ENTER> key in the measured value display.
Calibration Determined val-
ues
Displayed calibration data
1-point Asy  Zero point = Asy
 Slope = Nernst slope
(-59.2 mV/pH at 25 °C)
2-point Asy
Slp.
 Zero point = Asy
 Slope = Slp.
3-point to 5-
point
Asy
Slp.
 Zero point = Asy
 Slope = Slp.
The calibration line is calculated by
linear regression.
You can display the slope in the units, mV/pH or % (see section
9.1.1 S
ETTINGS FOR PH MEASUREMENTS, page 84).
The calibration record is automatically transmitted to the interface
after calibrating.