Operational Guide
32
Range Specifi c Messages Displayed On Third LCD
Line During Measurement
All the messages described in General Setup (page 11)
are displayed in pH range.
Temperature Sensor Problem (if there is one)
Cal Due or Off set and Slope Value
Time
Date
Battery or Charge Status
Logging Messages
Out of Calibration Range
pH
Measurement
Calibration Procedure
Pour small quantity of solution into clean beakers. If possible, use plastic beakers
to minimize any EMC interferences. Submerse the ORP electrode approximately
3 cm (1¼”) into the solution and stir gently. Press
CAL
when the instrument is
in RELATIVE mV measurement mode. The “CAL” tag
will appear and the Absolute mV is displayed on the
primary LCD line and “AbS” message on the secondary
LCD line. The “ ” will be displayed and “WAIT“ will blink
on the third LCD line until the reading is stable.
If the reading is out of range, “WRONG“ will be
displayed on the third LCD line.
When the absolute reading is stable and in
measurement range, the instrument asks for
confi rmation, the “CFM” tag will blink.
Press
CFM
to confi rm calibration. The instrument will
display “0.0“ RelmV on the primary LCD line with CFM
tag blinking and “MANUAL“ message on third LCD
line. In this moment the relative mV off set is equal to
absolute mV reading.
Use the
ARROW
keys for changing the displayed
Relative mV value.
Relative mV
Calibration
