fluidra 66178 - Page 28

0000137242 Rev. 7.1 26
The frequency output (Open collector circuit) can be used to control and guide the dosing of a remote
system in proportion to the pH measurement.
• Menu index “3A3” Current output proportional to pH measurement (OUT mA PH)
Note: The value set under the HOLD mA item is automatically generated by the instrument when a functional Hold
is present, for example due to a lack of water Flow Alarm or an enabled Voltage Input.
• Menu index “3A4” PH ALARMS
Note: The Holding Range and Holding Time items must be used together.
The indicated function controls the chemical measurement at a constant value for long periods of time. This alarm
can help to prevent incorrect dosing as a result of damaged probes.
Item
Default Value
Range
Standard FWM:
SetPoint:
7.20 pH
0
-
14 pH
Dose Type:
Acid
Acid / Alka
Pulse:
20
p
ulses/minute
20
-
150
pulses
/minut
e
Proportional Band:
0.3 pH
0.3
-
3pH
Item
Default Value
Range
Standard Out mA:
Range 0/4
-
20mA:
4
-
20 mA
0
-
20 mA o
r
4
-
20 mA
Start
(4mA):
0 pH
0
.
00
-
14
.
00 pH
End
(20mA):
14 pH
14
.
00
-
0
.
00 pH
Hold mA:
4 mA
0
-
20 mA
Item
Default Value
Range
pH Alarms List
Alarm minimum:
6.2 pH
0
-
14 pH
Alarm Maximum:
8.2 pH
0
-
14 pH
OFA (Maximum dose timer)
Off
10
-
3600 Second
s
Holding range:
Off
0.2
-
3 pH
Holding tim
e:
Off
10
-
3600 Second
s
Level Alarm: System stop or
alarm display
Disabled
Enable
d
/Disable
d
3A3 OUT mA PH
RANGE: 4-20 mA
START( 4): 0.00pH
END (20):
14.00pH
↓
↓↓
↓
3A3 OUT mA PH
START( 4): 0.00pH ↑
↑↑
↑
END (20): 14.00pH
HOLD mA:
4.00mA
3A4 PH ALARMS
MIN VAL.: 6.20pH
MAX VAL.: 8.20pH
OFA:
OFF
↓
↓↓
↓
3A4 PH ALARMS
HOLDING RANGE: OFF ↑
↑↑
↑
HOLDING TIME: OFF
LEVEL ALARM
:
DISABLED