Hanna Instruments HI 3512 User Manual

Page 10

OPERATIONAL GUIDE

POWER CONNECTION

Plug the 12 Vdc adapter into the power supply socket.
Note: This instrument use non volatile memory to retain the pH, mV,

Ion, EC, NaCl calibrations and all other settings, when unplugged.

ELECTRODE AND PROBE CONNECTIONS

For pH, ORP or ISE measurements connect a combination pH/ORP/ISE
electrode to the BNC connector located on the rear panel of the instrument.
For half cell electrodes with a separate reference connect the electrode’s
BNC to the BNC connector and the electrode’s reference to the corresponding
reference input socket.
For temperature measurements and automatic temperature compensation
on pH/ORP/ISE channel, connect the temperature probe to the appropriate
socket.
For EC, TDS, NaCl or Resistivity measurements connect the EC probe to the
DIN connector located on the rear panel of the instrument. As the
channels are fully isolated and a temperature probe is connected on pH
channel you can view independent temperature readings on each channel.

INSTRUMENT START UP

• Turn the instrument ON by pressing

ON/OFF switch located on the

rear panel of the instrument.

• At start-up the display will show the Hanna logo for a few

seconds followed by the

“Loading Log” message, then enters

the measurement mode.

pH MEASUREMENTS

To take a pH measurement remove the electrode
protective cap and simply submerse the electrode and
the temperature probe 3 cm (1¼”) into the sample to
be tested.
If necessary, press

CHANNEL to select pH channel

or/and press

RANGE until the display changes to

the pH mode. Enter SETUP

menu to select the pH resolution.

3 cm