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10.3
Appendix 3 - Hysteresis
Simple Explanation on the Function of Hysteresis
SP1 Set to LO
SP2 Set to HI
4.0
SP1
FORWARD DIRECTION
REVERSE DIRECTION
The controller relay activates when the set-point is reached. In the reverse direction, it does not de-activate
when the value reaches the set-point. Instead, it continues to be active till the value reaches the amount set by
the Hysteresis band.
40
RELAY ON
RELAY OFF
4.5
7.0
9.5
HYSTERESIS BAND
(DEFAULT = 0.5 pH)
10.0
SP2
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