Lutron Electronics PPH-2108 Operation Manual page 15

Press the " " PH/Temp Button " ( 3-7, Fig. 1 ) once,
the " Temp indicator " ( 3-11, Fig. 1 ) will light, now
the meter is ready for the Temperature " Hysteresis "
value setting.
Remark :
* Under " Display " show " HySt ", if " pH indicator "
( 3-10, Fig. 1 ) is lit, meter is ready for " pH Hysteresis
value " setting.
* Under " Display " show " HySt ", if " Temp. indicator "
( 3-11, Fig. 1 ) is lit, meter is ready for
" Hysteresis value " setting.
* The function of " Hysteresis value " setting, refer to
page 12, Fig. 2.
For example :
High limit value : 100
Low limit value : 20
Hysteresis value : 5
a. The control relay will On when measuring value up to 100.
The control relay will Off again when measuring value
down to 95.
b. The control relay will On when measuring value down to 20.
The control relay will Off when measuring value up to 25.
Temp. offset value setting
1)After finish the Hysteresis setting, press the
" Set Button " ( 3-4, Fig. 1 ) twice, the " Display "
will show " tPoA ", now the meter is ready for the
the Temp. offset value setting.
2)Use the " "
Button " ( 3-6, Fig. 1 ) to adjust the desiring
Temp. offset value.
Button " ( 3-5, Fig. 1 ) and the "
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12
Fig. 2
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