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ENGLISH
Unit is provided with ON-OFF mode which will activate (or deactivate in case of reverse mode ON)
output relays such as Constant / ON-OFF mode dosing pumps or other On-Off equipment.
* SELECTING MODE “ON-OFF” NEXT PROGRAMMING STEP
“HYSTERESIS”
SELECTING MODE “TIMED PULSES” WILL REQUIRE NEXT PARAMETERS SETTINGS
*Timed Pulses also known as PWM “pulses with modulation” time/pause allows proportional mode
on each ON-OFF set point activating corresponding pulses on output relay according to measured
value and always relating to the previous hysteresis selected settings. Default activating point at
1000 μS (range 0-20.000 μS DEFAULT); 100 μS (range 0-2000 μS); 0,10 μS (range 0-200 μS);
10000 μS (range 0-200.000 μS)
EC CONDUCTIVITY TIMED PULSES PROGRAMMING
Window Width (example with range 20000 μS): pulses are timed ON and OFF according to the
distance from selected set point, programmable, example: if selected set point is 700 μS EC and
measured value is 600 μS, PWM mode will start after reaching 650 μS with Time/Pause pulses
and decreasing the active time while reaching set point value. *Value shown according to
selected K range.
Cycle Time: PWM mode cycle 60 seconds (programmable): e.g. set point 7,00pH, window width
850 μS EC = active time 60 sec / pause time = 0 sec.;
at measured value 775 μS EC active time= 30 sec / pause time 30 sec.....and decreasing active
time accordingly while reaching set point value.
Cycle time depends on many variables such as distance from injection point to treating system,
reaction time required, chemical concentration, etc....
Active Time MIN (minimum, programmable): it sets the minimum time in which PWM is active, it
overrules the minimum setting programmed, In case user has selected Active time min 5 sec.,
this will be minimum time of PWM (check page 15, Timed Pulses function).
SELECTING MODE “ON-OFF” NEXT PROGRAMMING STEPS ARE AS FOLLOW……
NOT AVAILABLE WITH TIMED PULSES MODE
Hysteresis is used to activate or deactivate output relays when selected value is reached. It is
useful when there are too many and/or quick changes, which could damage connected equipment.
Increasing Hysteresis will allow to move away from set point value. *Value shown according to
selected K range.
NOT AVAILABLE WITH TIMED PULSES MODE
Delay time blocks relay outputs to ensure that the outputs are active only when the sensors
measurements are stable thus allowing the best results in terms of chemical balance.
*BACK TO SETPOINT PROGRAMMING STEPS FROM EITHER “ON-OFF” OR “TIMED PULSES” MODE
Over dosing time-out alarm selects a period of time for reaching set-point. If set point is not reached
within time, controller will block outputs operations including mA outputs (dosing pump). Alarm is
ON shown on display and will activate relay4 activating an alarm device.
ONLY WHEN USING DOSING PUMPS
Priming function ON will “freeze” the set point value to allow the
dosing pumps to be primed, outputs will not be active
.
Press ESC to return to MAIN MENU or Press ESC ESC to CONTINUOS MEASUREMENT display
MENU SETPOINT 2
Mode
ON/OFF
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EXPERT MENU
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MENU SETPOINT 2
Mode
Timed Pulses
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EXPERT MENU
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MENU SETPOINT 2
Active Time MIN
5 sec
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EXPERT MENU
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MENU SETPOINT 2
Cycle Time
60 sec
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EXPERT MENU
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MENU SETPOINT 2
Window Width
1000 μS*
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EXPERT MENU
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MENU SETPOINT 2
Priming
OFF
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EXPERT MENU
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MENU SETPOINT 2
Priming
ON
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EXPERT MENU
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MENU SETPOINT 2
Set point Delay
5 sec
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EXPERT MENU
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MENU SETPOINT 2
Overdosing
00:00 h:m
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EXPERT MENU
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MENU SETPOINT 2
Hysteresis
200 μS*
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EXPERT MENU
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