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If GLP pump is pressed, one of the next screens is displayed.
If a calibration hasn’t been performed the message
“Not Calibrated”
will be displayed.
The pump
GLP
displays the Time and Date of the last pump calibration.
pH MEASUREMENT
The
HI 84429
may be used as a pH meter for direct measurements.
Verify that the instrument has been calibrated before taking pH measurements. Set the
instrument to
pH meter
. At power up the instrument enters
pH meter
mode. From titrator mode
press
ESC
until pH units are displayed.
If an electrode calibration hasn’t been performed, or the number of days since the last pH
calibration is greater than the number of days after wich a calibration time-out warning is
displayed the message
“CAL DUE”
will blink on the left side of the display (see
Calibration
timeout
option in
Setup
for details).
If
CAL DUE
is displayed perform an electrode calibration.
Press
MENU
to access the instrument’s menu.
Press
HELP
to view the contextual help, every time you need suplimentary information. The help
is customized for every situation that can appear during instrument usage.
Press
STIR
to start/stop the stirrer.
Press
Titrator
to enter titrator mode.
Press
CAL
to access the calibration menu.
