User Guide

1. MOLDED EYE
2. ALARM LED
3. BNC CONNECTOR
4. HI 3214P/2
ORP ELECTRODE
5. 12 VCD POWER
ADAPTER
6. PROTECTIVE
SHEATH
7. LIQUID CRYSTAL
DISPLAY
P
R
FUNCTIONAL DESCRIPTION
The alarm setpoint is adjustable and if the ORP value is out
of range the user is alerted by a red light.
The meter is factory calibrated and does not need recalibration.
You no longer need to worry about battery changes: the unit
runs without interruption on 12 VDC power supply.
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• With a small screwdriver ad-
just the setpoint trimmer to
display the desired value in
the 350 to 850 mV range (e.g.
680 mV).
• Make sure the switch is
moved back to the right (MEA-
SURE Mode).
• Replace the rear panel and
the gasket, making sure that
the unit is properly closed.
• Whenever the mV reading is
lower than the setpoint, the
red alarm LED blinks to warn
the user.
Maintenance:
To minimize clogging and provide longer life to the ORP
electrode, it si recommended to clean it monthly. Immerse
the tip of the electrode in HI7061 cleaning solution for at least
one hour and then rinse it with tap water.
Check the ORP
accuracy by immersing the electrode in
HI7020 ORP solution. The reading should be between 200
and 275 mV at 20°C (68°F).
Otherwise clean the platinum tip of the electrode by rubbing it
with a soft cotton or lint-free cloth soaked with HI7061 clean-
ing solution.
After cleaning, condition the ORP electrode by leaving it in a
pretreatment reducing (HI7091) or oxidizing (HI7092) solution
for half an hour.
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