Horiba Scientific DS-72G Instruction Manual page 64

Input Upper or Lower Limit Values
Lower limit value entry
Even if changing units (S/m, S/cm, FIX), the alarm set value is not changed.
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1.
When selecting ON the Alarm, lower limit item,
the Lower limit value, tap
Lower limit value item.
2.
Enter an upper limit value on the numerical-key
screen.
To change the unit (mS/m, S/m, etc.), tap on
the unit change key on the right of the numerical-
key screen.
3.
Tap .
The setting applies.
To cancel the settings, tap
on the right of the
.