DULCOMETER® D2C Dual channel Controller

The dual-channel controller DULCOMETER® D2C is a measuring and control device based on microprocessor technology offering the highest degree of processing reliability in a broad spectrum of applications. The controller is configurable and therefore can be individually adapted to meet your needs. This applies as much to the control modes as to its design (wall-mounted or panel mounted) and for many other parameters. You choose and only pay for what you need to meet your requirements.

Advantages

Universal application because of combined control possible for many measured values. pH/Redox, pH/Chlorine, pH/pH, pH/Chlorine dioxide and Chlorine/Chlorine
Optimum adaptation to processing requirements because different add-on stages
Seamless integration into your processing technology: Varied installation options for sensors and different control options for dosing equipment
Optimised process runs through special functions such as basic load dosing and many threshold value functions
Safety: threshold value monitoring with dosing time limits as standard
Simple and easy-to-view user guide in full text via a large graphic display in 8 languages
Large, easy-to-read graphics display for measured values, correcting values and information.

Applications for measured quantity combinations pH/Redox, pH/Chlorine and Chlorine/Chlorine

Water treatment for swimming pools
Differentiating measurement of Chlorine, reduction of combined Chlorine in swimming pool water purification
Cooling water treatment

Application for measured quantity combination pH/pH

Effluent treatment
Neutralisation
All applications have to be fitted with a redundant pH measuring device for safety reasons

Application for measured quantity combination pH/Chlorine dioxide

Combating legionella
Drinking water treatment

Features

Threshold value monitoring with adjustable automatic cut-out as standard
Probe connection in two-wire technology, unaffected by interference
2 signal outputs 0/4 – 20mA galvanically separated
Different designs for wall and panel mounting
1 digital input for pause and error monitoring of sample water
1 digital input for super chlorination or basic load
Basic load dosing (additive effect)
Unidirectional control for pH/Redox, pH/Chlorine dioxide and pH/Chlorine, bidirectional control for pH/pH
Neutral zone control for pH/pH
Temperature compensation for pH
Chlorine difference measurement for Chlorine/Chlorine
Regulating output for minimising combined chlorine for Chlorine/Chlorine

Technical Data

Measurand	Value
Accuracy	0,5 % of measuring range
Correction variable	Temperature via Pt 100
Correction range	0...100°C
Control modes	P, PI, PD, PID
Control	Bidirectional control with pH/pH Unidirectional control with pH/Redox, pH/Chlorine dioxide and pH/Chlorine Dead zone control with pH/pH Basic load (additive effect) Manual adjustment variable for test purposes
Adjustable outputs	2 Reed contacts (pulse frequency output) 2 power relays (pulse length) or 2 Analogue outputs (0/4...20 mA)
Analogue outputs	2 analogue outputs ((0/4…20 mA) galvanically separated, max load 600 W(2. Output 400W) Assignable as measurement, correcting or variable adjustment mode.
Alarm relay	250V ~3 A, 700 VA, changeover contact type
Electrical connection	24 V AC/DC / 100 V~ / 115 V~ / 200 V~ /230 V~ ±10%
Protection class	Wall mounted: IP 65 Panel mounted: IP 54
Ambient temperatures	Wall mounted: -5..0.40°C (non-condensing) Panel mounted: 0..0.40oC (non-condensing)
Dimensions in mm (WxHxD)	Panel mounted: 96 x 96 x 140 mm Wall mounted: 189 x 200 x 76

Measurand	Measurement and Control Range	Resolution	Measuring input
pH (measured quantity 1)	0 - 14	0,01pH	Input resistance > 1012 W or terminal standard signal 0/4...20 mA
Redox (measured quantity 2)	0 - 1000 mV	1 mV	Terminal standard signal 0/4...20 mA
Chlorine (measured quantity 2)	0,05 - 0,500 ppm 0,05 - 2,00 ppm 0,05 - 5,00 ppm 0,05 - 10,00 ppm 0,05 - 20,00 ppm 0,05 - 50,00 ppm 0,05 - 100,00 ppm	0,001 ppm 0,01 ppm	Terminal standard signal 0/4...20 mA

ProMinent DULCOMETER® Measuring and Control system uses DULCOTEST® sensors and ProMinent dosing pumps to build a complete control system with measurement, control, dosage and recording, all from one source and optimised to work together.