EUTECH INSTRUMENTS ALPHA PH1000 PHORP CONTROLLERTRANSMITTER Manual de Instruções descarregar pdf (Página 36)

Instruction Manual alpha-pH 1000

12.3 Appendix 3

Simple Explanation on the Function of Hysteresis

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.

4.0 4.5 9.5 10.0

7.0

REL

YOFF

HYSTERESIS B

(DEF

ULT = 0.5 pH)

FORWARD DIRECTION

REVERSE DIRECTION

SP1

SP2

REL

YON

SP1 Set to LO

SP2 Set to HI

1 2 ... 31 32 33 34 35 36 37 38 39 40

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EUTECH INSTRUMENTS ALPHA PH1000 PHORP CONTROLLERTRANSMITTER Manual de Instruções Página 36