DELETING STORED DATA
The meter allows to delete a single sample or all the
memory at one time.
To delete a single sample proceed as follows:
• Enter the viewing stored data mode and select the de-
sired sample number.
• Press the HOLD key. "dEL" and
"CFM" will start blinking.
• Press CFM to confirm deletion or HOLD again to
escape without deleting data. When scrolling through
stored data, if a deleted sample is selected, the meter
will display the "nuLL" message.
To delete all data in memory:
• Enter the viewing stored data mode.
• Press SHIFT+HOLD keys. "dEL" and "CFM" will start
blinking and the "ALL" message is displayed on the
secondary LCD.
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1. Probe holder
2. ON/OFF key, to turn the instrument ON and OFF
3. STORE/MRCL key, to store the measured data
and to recall stored data
4. CAL/SETUP key, to enter/exit calibration and setup
mode
5. CFM key, to confirm values
6. SHIFT key, to activate the key alternate function
Press and hold first the SHIFT key and then the
second desired key
7. Down arrow/PAPER key, to manually decrease the
value of temperature or other parameters and to pull
out the printer paper
8. Up arrow/PRINT key, to manually increase the
value of temperature or other parameters and to ob-
tain a printout or cancel printing
9. RANGE (
AD332
) or NEXT (
AD331 & AD431
)/“lock”
key, to select measurement unit or switch the fo-
cused data, and to freeze current range on the LCD
10. HOLD/GLP key, to freeze the first stable reading
on the LCD and to display Good Laboratory Prac-
tice information
11. Liquid Crystal Display (LCD)
12. DIN connector for conductivity probe
13. RS232 port for serial printer or PC connection
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