Example: For setpoint 3.00 mg/L, delta=0.5, sample rate 5 minutes and measured value 2.80 mg/L,
the proportional dosing will be active for the initial 2 minutes and will stop for the remaining 3 minutes.
In fact: Time = (3-2.8)*5/0.5 = 2 minutes
Analog output = 4 + 16*2/5 = 10.4 mA
To modify the dosing setpoint, enter the “Chlorine Menu” - “Dosing control Cl” and edit the “Setpoint”
line. The value must be between 0.10 and 4.90 mg/L.
To modify the Delta, edit the “Delta” line. The available values are 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7,
0.8, 0.9, 1.0, 1.5, 2.0, 3.0, 4.0, 5.0.
Note: The speed of the analyzer could be modified by changing the sampling rate. A new
decision regarding the chlorine regulator is taken only after a new measurement.
The Setpoint and Delta could be quickly consulted on one chlorine measuring panel.
Low reading protection
To prevent excessive chlorine dosing if the detector is not working properly or the reagent bottle is
empty, a “Detector Error” is generated if the measured chlorine value is under the low point value.
This error is generated only if the low point feature is set active.
The chlorine dosing is stopped and the SYSTEM ERROR LED starts blinking.
To enable this feature, edit “Chlorine Menu” - “Dosing control Cl” - “Low Point” value and set the
“Low Point” status as “Active”. The allowed value is 0.00 to 1.00 mg/L.
Overdosing protection
To prevent overdosing a “Detector Error” is generated if the dosing command is on for the Max. ON
time and the read value is changing less than 0.05 mg/L.
The chlorine dosing is stopped and the SYSTEM ERROR LED starts blinking. The dosing could be
resumed only by restarting the controller.
To modify this protection, edit “Chlorine Menu” - “Dosing control Cl” - “Max. ON” value. The allowed
range is between 30 and 720 minutes.
Setpoint :2.50 mg/L
Delta :0.1 mg/L
Low Point:0.01 mg/L
Low Point:Inactive
Max. ON :060 min
CHLORINE SETTINGS
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