Hanna Instruments HI 98170 - Manual (Page 9)

9
OPERATIONAL GUIDE
INITIAL PREPARATION
The instrument is supplied complete with rechargeable batteries. Remove the
back cover, unwrap the batteries and install them, while paying attention to
the correct polarity. Proceed with a complete charging process (see page 37).
To prepare the instrument for use, connect the pH electrode and the temperature
probe to the BNC and temperature sockets on the top of the instrument. The
temperature probe is used in conjunction with the pH electrode to utilize the
instrument's ATC capability, but it can also be used independently to take
temperature measurements. If the probe is disconnected, temperature can be
set manually with the ARROW keys (see page 10 for details).
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 charge, then enters measurement mode.
After measurement switch the instrument off, clean the electrode and store it with
a few drops of HI 70300 storage solution in the protection cap. Place the instrument
in the battery recharger case and start the recharging process (see page 37).
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 25.
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 25.
pH MEASUREMENTS
To take a pH measurement remove the electrode
protective cap and simply submerge the tip of the
electrode (4cm/1½”) and the temperature probe
into the sample to be tested.
If necessary, press RANGE until the display changes
to the pH mode.
Allow for the electrode to adjust and reading to
stabilize (hourglass symbol turns off).
The LCD will show the pH measurement together
with the temperature of the sample.
ON / OFF
RANGE SETUP