6
INITIAL PREPARATION
The meter is supplied with batteries (for details see page 19).
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 can be used independently
to take temperature measurements, or it can be used in conjunction
with the pH electrode to utilize the meter’s Automatic Temperature
Compensation (ATC) mode. If the probe is disconnected, temperature
can also be set manually with the
ARROW
keys.
Turn the instrument ON by pressing
ON/OF
F.
At start‑up the display will show all LCD segments and then the battery
percentage while the instrument performs a self check (or as long as
the button is held).
The meter will automatically enter measurement mode.
After measurement switch the meter off. Clean the electrode and store
it with a few drops of
HI70300
storage solution in the protective cap.
To save the batteries, the auto‑off feature turns the meter off after
20 minutes (no button pressed). To disable this feature, see “Setup
Menu” section on page 16.
pH MEASUREMENTS
To take a pH measurement remove the electrode
protective cap and submerse the electrode and the
temperature probe 3 cm (1
1
/
4
”) into the sample
and stir gently.
If necessary, press the
RANGE
key until the display
shows pH mode.
Allow time for the reading to stabilize.
OPERATIONAL GUIDE
