8
OPERATIONAL GUIDE
POWER CONNECTION
Plug the 12 VDC adapter into the power supply socket.
Notes:
• These instruments use non volatile memory to retain
the pH, mV, temperature calibrations and all other settings, even
when unplugged.
• Make sure a fuse protects the mains line.
ELECTRODE AND PROBE CONNECTIONS
For Hanna Instruments P Type pH or ORP electrodes (with internal
reference) connect the electrode’s BNC to the socket on the back of the
instrument and the pin to the reference socket.
Note: Electrode condition and response information is displayed on
the bar graph gauges during the day the calibration is performed,
only if Hanna Instruments P type (PIN) electrodes are used.
If the electrode is not recognized as a Hanna Instruments P type
electrode, the bar graph gauges will blink (25 seconds OFF,
4 seconds ON, full bar graph).
For temperature measurement and automatic temperature compensation
connect the temperature probe to the appropriate socket.
INSTRUMENT START-UP
• Turn the instrument on by pressing the
ON/OFF
switch located on
the rear panel.
• All LCD tags are displayed and a beep is sounded while the instrument
performs a self test.
• The instrument will display “
LoAD
” message and “ ” blinking until
initialization is complete.
• The “
Unscrew electrode refilling cap
” message reminds the user to
loosen or remove the electrode refilling cap to improve the electrode’s
response time.
• The instrument automatically defaults to pH measurement mode
unless a Hanna Instruments P type ORP electrode is detected.
pH MEASUREMENT
Make sure the instrument has been calibrated before
taking pH measurements.
• Submerse the tip of a properly conditioned
electrode (see page 34) and the temperature