Calibration Standards; Calibration Data - wtw Multi 9420 Operating Manual

Multi 9420
Displaying the cali-
bration data
ba75964e04 04/2015

6.2.4 Calibration standards

Use two to seven different standard solutions. The standard solutions have to
be selected in either increasing or decreasing order.
Select the unit of the standard solution and measurement result in
the ISE setup/Unit menu.
Standard solution (Std 1 - 7)
Unit [mg/l]
Unit [mol/l]
Unit [mg/kg]
Unit [ppm]
Unit [%]
The measurement precision is also dependent on the selected
standard solutions. Therefore, the selected standard solutions
should cover the value range expected of the subsequent concen-
tration measurement.
If the measured electrode potential is outside the calibrated range,
the [ISEErr] warning is displayed.

6.2.5 Calibration data

The calibration record is automatically transmitted to the interface
after calibrating.
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.
Values
0.010 ... 500,000
0.100 ... 5,000 µmol/l
10.00 ... 5,000 mmol/l
0.010 ... 500,000
0.010 ... 500,000
0.001 ... 50,000
Ion concentration
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