User Guide

33
Note: The instrument uses the following con-
figuration.
It is recommendable to purchase Hanna In-
struments HI 710005 and HI710006 voltage
adapters that use the proper polarity con-
figuration.
HI92710, HI92740, HI 92810 and HI 92840
can also be used with other adapters. In
this case, remember to check the correct
polarity of your adapter before connecting it
to the meter.
WARNING: In HI92810 and HI92840, if the
external power supply and bat-
teries are disconnected, all
stored data will be erased. Al-
ways apply external power to
the instrument when changing
low batteries to prevent data
from being lost.
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