1110
Allow for the electrode to adjust and reading to stabilize (hourglass
symbol turns off).
On the pH screen are displayed:
• pH reading with the selected resolution.
• Temperature reading in the selected unit (ºC or ºF).
• Temperature compensation mode (MTC - manual, ATC - automatic).
While in MTC mode the indicate that the temperature can be
manually changed using ARROW keys.
• Electrode condition during the calibration day.
• The buffers used in last pH calibration (if feature is enabled in
SETUP).
• Available function keys.
In order to take more accurate pH measurements, make sure that the
instrument is calibrated (see page 19 for details).
It is recommended that the electrode is always kept wet and rinsed
thoroughly with the sample to be measured before use.
The pH reading is directly affected by temperature. For accurate pH
measurements, temperature must be taken into consideration. If the
sample temperature is different from the temperature at which the pH
electrode was kept, allow a few minutes to reach thermal equilibrium.
To use the instrument's Automatic Temperature Compensation feature,
submerse the temperature probe into the sample as close to the electrode
as possible and wait for a few seconds.
If manual temperature compensation (MTC) is desired, the
temperature probe must be disconnected from the instrument.
The display will show the last measured temperature reading, or the last
set temperature, with the “MTC” indication.
The “MTC” indication and the symbol light up on the LCD to indicate
that the instrument is in MTC mode and the ARROW keys can be used
to enter the desired temperature value.
Note: When in MTC mode the user can press and hold an ARROW key,
and the instrument will start incrementing/decrementing the
temperature value. The instrument keeps measuring and the
display is updated periodically.
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
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