Operational Guide - Hanna Instruments HI 98180 Instruction Manual

OPERATIONAL GUIDE

OPERATIONAL GUIDE OPERATIONAL GUIDE
OPERATIONAL GUIDE OPERATIONAL GUIDE
INITIAL PREPARATION
The instrument is supplied complete with rechargeable batteries. Proceed with
a complete charging process before starting (see page 58).
To prepare the instrument for field measurements close the serial communica-
tion socket and all unused connector sockets with proper stopper (to ensure
waterproof protection) (HI 98183/4/5 only). Use the holed temperature
rubber cork for the temperature socket when temperature probe is connected
(HI 98183/4/5 only).
Connect the pH electrode and the temperature probe to the BNC and tempera-
ture sockets on the top of the instrument. Push the pH electrode sleeve to cover
the connector accomodation. 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 13 for details).
Turn the instrument ON by pressing ON/OFF key.
At start-up the display will show the Hanna logo for a few seconds followed by
the percentage indication of the remaining battery charge, then enters the
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 (see page 62).
The auto-off feature turns the instrument off after a set period (default 30 min)
with no button pressed to save battery life. To set another period or to disable
this feature, see SETUP menu on page 33.
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 33.
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. Use Mode key to select the pH resolution.
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