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9
POWER CONNECTION
Plug the 12 Vdc adapter into the power supply socket.
Notes: • These instruments use non volatile memory to retain the pH, Ion calibrations and all other
settings, even when unplugged.
• Make sure a fuse protects the main line.
ELECTRODE AND PROBE CONNECTIONS
For pH or ORP measurements connect a pH/ORP electrode with internal reference to the BNC connector
located on the rear panel of the instrument (for the desired channel – HI 4222 only).
For ISE measurements (HI 4222 only) connect, to the desired channel, an ISE electrode with internal
reference to the BNC connector located on the rear panel of the instrument.
For electrodes with a separate reference connect the electrode’s BNC to the BNC connector and the electrode’s
reference to the reference input socket.
For temperature measurements and automatic temperature compensation connect the temperature probe to the
appropriate socket (for the desired channel – HI 4222 only).
INSTRUMENT START UP
• Turn the instrument on from the power switch located on the rear panel of the instrument.
• Please wait until the instrument finishes the initialization process.
Note: It is normal for the loading process to take a few seconds. If the instrument doesn’t display the next
screen, restart the meter using the power switch. If the problem persists, contact your dealer.
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