wtw EcoLine pH 170 Bedienungsanleitung Seite 163

Example:
Measured value
pH10
ÄÅÆÇÈÉ
pH8
UL
pH6
LL
ÄÅÆÇÈÈÉ
pH3
0
The following default limits are given:
Rel1: LL = pH 6
Rel2: UL = pH 8
pH value = 6 to 8
If the value lies between pH 6 and pH 8 (set range), it is not regulated.
pH value = 3 to 6
If the value sinks below pH 6, Rel 1 is regulated between 0 and 70 pulses/min
pH value < 3
If the value sinks below pH 3 (except for Xp/LL), it is further regulated using Rel 1
by 70 pulses/min.
pH value = 8 to 10
If the value rises above pH 8, it is regulated using Rel 2 between 0 and 50
pulses/min.
pH value > 10
If the value rises above pH 10 (except for Xp/UL), it is further regulated using Rel 2
by 50 pulses/min.
Configuration
Rel 2
Rel 1
t [pulses./min.]
F
50 70
Xp (LL) = 3 pH
Xp (UL) = 2 pH
tF = 70 Imp./Min.
tF = 50 Imp./Min.
pH 170/
pH 296
167