EUTECH INSTRUMENTS ALPHA DO 500 DISSOLVED OXYGEN Manual de Instruções descarregar pdf (Página 45)

Instruction manual αlpha DO 2000

40

11.4 Appendix 4 – General instructions concerning Controller Setting

11.4.1 Control characteristic of Controllers used as limit value switch

Xp = 0

Xp = 0

0%

50%

100% Yh

-Xw

+Xw

SP 2SP 1

MIN function MAX function

11.4.2 Control characteristic of P-Controllers as proportional controller

Xp

0%

50%

100% Yh

-Xw

+Xw

Xp

Prop. band Prop. band

SP

2

SP 1

MIN function MAX function

11.4.3 Control characteristic of PI-Controllers as proportional integral controller

SP1 SP 2

10%

Proportional. band

X

P

Prop. band

X

P

20%

25%

100%

50%

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