Functional Description - ProMinent DULCOMETER Assembly And Operating Instructions Manual

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Functional description

Brief functional description
The controller for the measured variable
inductive conductivity provides the basic
functions for water treatment applications.
The controller has a fixed configuration
with the following features:
Language-independent operation.
n
Use of abbreviations, such as:
[INPUT]
–
[OUTPUT]
–
[CONTROL]
–
[ERROR]
–
Illuminated display
n
3 LEDs indicate the operating sta‐
n
tuses:
[f-REL] , active
–
[P-REL] , active
–
– Error
Control characteristics:
n
– P, or
– PID
Selectable control direction:
n
– Raise measured value, or
– Lower measured value
Pulse frequency relay
n
trol of the metering pump
[P-REL] , configurable as:
Output relay
n
– Alarm
– Limit value
– Pulse width-modulated (PWM)
control output for metering pumps
Analog output 0/4...20 mA, configu‐
n
rable:
– Measured value (conductivity
only), or
– Correction variable
Priming function for all actuators
n
[f-REL] for con‐
Functional description
Digital input to switch off the controller
n
or to process a sample water limit
contact by remote control
Temperature sensor input (Pt 100 or
n
Pt 1000) for temperature compensa‐
tion
Degree of protection
n
– IP67 (wall / pipe mounting)
– IP54 (control panel mounting)
Applications:
Bleeding of for example air scrubbers
n
and chillers
General water treatment, for instance,
n
the monitoring of rinsing baths
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