Hanna Instruments HI 9146 - Manual (Page 9)

9
Turn the instrument ON by pressing On/Off.
At start-up the display will show all
the used segments for a few seconds
(or while the button is held), followed
by the percentage indication of the
remaining battery life.
• After a few seconds “ Cond” message
appears, the “ ” and “ WAIT” tags will
blink on the LCD if probe is connected
to inform the user that the probe is in
auto-conditioning (automatic polarization)
mode.
• When this message disappears, the probe
is polarized and the instrument can be
calibrated.
• The meter is now ready to operate.
• If the probe is disconnected or broken, the
meter will display “ ----” and “NO Probe”
tag blinking. In this situation only SETUP
menu is available.
The auto-off feature turns the instrument off
after a set period (default 20 min) with no
button pressed to save battery life. To set
another period or to disable this feature, see SETUP menu on page 17.
The auto-off backlight feature turns the backlight off after a set period
(default 1 min) with no buttons pressed. To set another period or to
disable this feature, see SETUP menu on page 17.
PROBE POLARIZATION
The probe is under polarization with a fixed voltage of approximately
800 mV.
Probe polarization is essential for stable measurements with the same
recurring degree of accuracy.