Multi 9420
Ion concentration
ba75964e04
04/2015
53
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.
6.2.5 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.
Select the unit of the standard solution and measurement result in
the
ISE setup
/
Unit
menu.
Standard solution
(Std 1 - 7)
Values
Unit [mg/l]
0.010 ... 500,000
Unit [mol/l]
0.100 ... 5,000 µmol/l
10.00 ... 5,000 mmol/l
Unit [mg/kg]
0.010 ... 500,000
Unit [ppm]
0.010 ... 500,000
Unit [%]
0.001 ... 50,000
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.
The calibration record is automatically transmitted to the interface
after calibrating.
