LaMotte Tracer pH Meter - Manual (Page 7)

7
BASIC OPERATION
Powering the TRACER
If the batteries are weak, the
BAT
indicator will appear on the display. Press the
ON/OFF button to turn the TRACER on or off. The auto power off feature will
shut the TRACER off automatically after 10 minutes of inactivity.
Electrode Recognition
When the TRACER is turned on, it will recognize the type of electrode that is
connected and will display the appropriate unit of measure. An electrode must
be attached before turning the meter on.
Automatic Calibration
When the TRACER is turned on, it will enter the Automatic Calibration mode.
SELF
and
CAL
will appear while calibration is in progress. After the calibration
is completed, the
SELF
and
CAL
display icons will extinguish and both the main
display and the bar graph will read in pH units. The readings will fl ash on the
display until they have stabilized.
Changing the Displayed Temperature Units
Press and hold the CAL/RECALL button for approximately 3 seconds. The
°C
or
°F
icon will change fi rst and the numerical temperature value will change
only after the button is released.
NOTE: If the CAL/RECALL button is accidentally accessed
CAL
will appear
on the display. If this occurs, turn the meter off and then turn the meter on and
begin again.
Data Hold
Press the MODE/HOLD button to freeze the current reading. The
HOLD
display
icon will appear along with the held reading. The held reading will be stored in
the next 15-reading storage location. Press the MODE/HOLD button to return
to normal operation.
DISPLAY MESSAGES
CAL Reminder
When the TRACER is turned on for the 15th time, without recalibration the
CAL
icon will appear on the display indicating the the TRACER may require
calibration. Some applications may require recalibration of the electrode
sooner than others. The
CAL
display is a reminder and will turn off when the
pH electrode is recalibrated.