Dulcometer® Disinfection Controller

The Dulcometer® Disinfection Controller system is a bus system used to network chemical metering equipment. The system is designed for use in water treatment and also for waste water treatment . The flexible system can be designed to meet requirements either as a compact or decentralized modular system and is designed to meet all future requirements

The Dulcometer® Disinfection Controller can be configured in two ways:

Dulcometer® Disinfection Controller compact: For controlling a single system
Dulcometer® Disinfection Controller DULCO® -Net: For controlling up to 16 systems.

ProMinent made the idea a reality, achieving the task of measuring and controlling from one up to 16 systems using a single device. Even from two systems considerable cost advantages are gained in comparison with traditional measuring and control systems, because only one single central unit is needed. If need be, several central units can also be used, e.g. in the caretaker’s and technicians’ room, with different levels of authorization. Each system has an in situ calibration option and can measure and control the following parameters:

pH value
free chlorine
total chlorine (only measured)
combined chlorine (calculated)
ORP
Temperature (as correction variable for pH and chlorine)

Advantages

Considerable cost savings through integrated videographic recorder and decentralized modular design:
With only one central unit, up to 16 seperate systems can be regulated and controlled.
The simplest operation because of the large illuminated colour display and automatic selection of measurement
range. Simple wiring by means of coded ready-made socket connections.
High degree of reliability thanks to extensive monitoring functions such as sensor monitoring and dosage time limitation.
Metering of disinfectants and flocculates only in the optimum pH range.
Easy remote maintenance without special software using a normal PC and integrated webserver. Immediate notification of faults by SMS or email.

Features

Simple installation: installation only needs one bus cable
No wiring errors because of coded plugs and sockets
Each ProMinent device connected is automatically recognized by the central unit and works according to the “plug and play” principle making installation and start up much easier.
Investment for the future: flexible and simple upgrade with additional modules
Up to 16 seperate systems controlled by only one central unit, saving costs
Integrated videographic recorder saving costs on a printer, ink and paper
Built-in display – An embedded webserver allows you to communicate with the Dulcometer® Disinfection Controller without any special software and only one PC with a LAN interface and a web browser. Direct via the Internet or Intranet
The card reader: The built-in MultiMediaCard reader and writer allows you to transfer measured data to a PC or to carry out software updates using a MultiMediaCard familiar to you from using a digital camera.
Alarm by SMS or email if there is a fault
Simple integration into existing building control systems: An OPC server allows smooth integration into any already available control system in the building or process visualization system.
The built-in calibrator/service timer reminds you about any imminent calibration or service.
Intuitive operation using a large colour display
Simple diagnosis of malfunctions using fault history and diagnosis menu
Prevention of incorrect chemical metering: The controller has information on the systems: sensors, metering pumps, desired results, and from this data can forecast the requirement for chemicals.
The Eco!Mode allows circulation power to be decreased, e.g. on days when production requirements are reduced – and this saves energy.

Technical Data

Size	Value
Error of measurement	pH, chlorine and ORP: max. ± 0.5 % of the measuring range (at 77° F/ 25°C) Temperature: max. ± 32.9° F(±0.5 °C) over hole measuring range (at 77° F/25°C)
Correction variable	Temperature via Pt 100 or Pt 1,000 sensors
Correction range	32...212° F (0...100° C)
Disturbance signal	Balance tank level
Control modes	P, PI, PID
Control	Bidirectional control for pH Unidirectional control for chlorine additive basic load dosage manual adjustment for test purposes
Adjustable outputs	3 Reed contacts (pulse frequency output) 3 power relays (pulse length) or 4 Analogue outputs (0/4...20 mA)
Digital inputs	3 per system: 1 water measurement fault 1 changeover of parameter set (night operation) 1 flow meter for contaminated water, fresh water feed
Analogue outputs	4 analogue outputs (0/4…20 mA) galvanically separated, max load 600 W Assignable as measurement, correction or adjustment mode.
Alarm relay	250 V ~3 A, 700 VA with changeover contact
Electrical connection	85...265 V~, 50/60 Hz
Protection class	Wall mounted: IP 65 Control panel mounted: IP 54
Ambient temperatures	Wall mounted: 23...113° F (-5...45° C) (non-condensing) Panel mounted: 23...113° F (-5...45° C) (non-condensing)
Dimensions inches	Panel mounted: 13.5 x 8.9 x 1.6" (342 x 227 x 40 mm) Wall mounted: 13.5 x 8.9 x 3.1" (342 x 227 x 78 mm)

Measured quantity	Measurement and control range	Resolution	Measured input
pH 1)	-1...15	0.01pH	input resistance > 5 x 10 ¹¹Ω
Redox	-1,200...+1,200 mV	1 mV	input resistance > 5 x 10 ¹¹Ω
Chlorine free 1) 2)	0.01 - 10.00 ppm	0.01 ppm	CANopen-Bus
Chlorine total 1) 2)	0.01 - 10.00 ppm	0.01 ppm	CANopen-Bus
Chlorine combined	0.01 - 2.00 ppm	0.01 ppm	Differential measurement
Temperature	-4 ...302° F (-20...+150° C)	32° F (0.1° C)	Clamp Pt 100 / Pt 1000

1) temperature compensated
2) pH compensated

ProMinent DULCOMETER® Measuring and Control system uses DULCOTEST® sensors and ProMinent metering pumps for building a complete control system providing measurement, control, dosage and recording, all from one source, optimized to work together.