wtw Multi 9420 - 9 Settings; Ph Measurement Settings; Settings for Ph Measurements

Settings Multi 9420
84 ba75964e04 04/2015
9 Settings
9.1 pH measurement settings
9.1.1 Settings for pH measurements
The settings are made in the menu for calibration and measurement settings of
the pH/ORP measurement. To open the settings, display the required mea-
sured parameter in the measured value display and press the <ENTER> key.
After completing the settings, switch to the measured value display with <M>.
Default settings are printed in bold.
Menu item Possible
setting
Explanation
Calibration /Calibration
record
- Displays the calibration record of the last calibration.
Calibration / Calibration
data storage / Display
- Displays the last calibration records (max. 10)
Calibration /
Calibration data storage
/ Output to RS232/USB
- Outputs the stored calibration data to the USB-B interface
(PC)
Calibration / Calibration
data storage / Output to
USB flash drive or
printer
- Outputs the stored calibration data to the USB-A interface
(USB memory device/USB printer)
Calibration /Buffer TEC
ConCal
NIST/DIN
...
Buffer sets to be used for pH calibration.
More buffers and details: see section 9.1.2 B
UFFER SETS
FOR CALIBRATION, page 86 and section 4.2 PH CALIBRATION,
page 29.
Calibration / Single-point
calibration
yes
no
Quick calibration with 1 buffer
Calibration /Calibration
interval
1 ... 7 ... 999
d
Calibration interval for the IDS pH sensor (in days).
The meter reminds you to calibrate regularly by the flash-
ing sensor symbol in the measuring screen.
Calibration /Unit for
slope
mV/pH
%
Unit of the slope.
The % display refers to the Nernst slope of
-59.2 mV/pH (100 x determined slope/Nernst slope).
QSC /First calibration - Starts the initial calibration with QSC buffers.
This menu item is only available as long as no initial cali-
bration was carried out with the connected IDS sensor.
QSC /Record of first cal-
ibration
- Displays the calibration record of the QSC initial calibra-
tion.
QSC /Control calibra-
tion
- Starts the control calibration with QSC buffers.
This menu item is only available if an initial calibration was
carried out with the connected IDS sensor.