ProMinent GmbH

- Model D1Cb/D1Cc - Controller


The controller DULCOMETER D1Cb/D1Cc can be used for control tasks in potable water treatment, waste water treatment and many other areas. Safe, convenient and clear, thanks to the large illuminated graphic display, plain text operating menu and pH sensor monitoring.

The water analysis workhorse

The D1Cb/D1Cc controller is a 1-channel P/PID controller for the measured variable pH, ORP, chlorine, chlorine dioxide, chlorite, ozone, bromine, peracetic acid, hydrogen peroxide, fluoride, dissolved oxygen and conductivity via mA. The sensors for pH and ORP can be directly connected via coaxial cable or using the 4-20 mA sensor input. The controller can bidirectionally control the measured variables, monitor limit values and transmit the measured value via an mA output, e.g. to a PLC. The mA output can optionally also be configured as a controlled variable output. The controller has two pulse frequency outputs to control two metering pumps (raise and lower). Two output relays can optionally be used as limit value relays or to control motor-driven pumps or solenoid valves. An alarm relay signals the occurrence of a fault. A digital input is used to switch off the control or to process a sample water limit contact by remote control. The impact of temperature on the measurements can be provided by temperature measurement or by manual input. Menu-driven operation is possible in 22 languages.

  • Flexibility through free selection of variables from all measured variables
  • Safety through sensor monitoring of pH for glass breakage and line breakage
  • Flexibly upgradable, thanks to subsequent activation option of functions by means of an activation code
  • Various installation options: wall-mounted or installation in a control cabinet

  • Measurement and control of water parameters in industrial and process water treatment plants
  • Waste water neutralisation
  • Measurement of the pH value and the disinfection parameters in potable water treatment and in the food and beverage industry
  • Measurement and control of the hygiene parameters in swimming pools

Technical Details

  • Measured variables: pH, ORP, chlorine, chlorine dioxide, chlorite, bromine, conductivity, peracetic acid, hydrogen peroxide, ozone, dissolved oxygen and fluoride
  • Method of installation, degree of protection: D1Cb wall mounting IP 65, D1Cc control panel mounting IP 54, 1/4 DIN
  • Measurement: 1 measuring channel, temperature compensation for pH
  • Control: PID controller, bidirectional controller (e.g. with pH acid and alkali)
  • Control inputs: 1 digital control input

Technical Data

  • Measuring range:
  • Type of connection mV:
    • pH 0.00 … 14.00
    • ORP - 1,000 … +1,000 mV
  • Type of connection mA:
    • Chlorine: 0.00...0.500/2.00/5.00/10.0/20.0/50.0/100.0 ppm
    • Chlorine dioxide: 0.00...0.500/2.00/10.0/20.0 ppm
    • Chlorite: 0.02...0.50/0.1...2 ppm
    • Bromine: 0.02...2.0/0.1...10.0 ppm
    • Ozone: 0.00...2.00 ppm
    • Hydrogen peroxide, PER1 sensor : 2.0...200.0/20...2,000 ppm
    • Peracetic acid: 1...20/10...200/100...2,000 mg/l
    • Dissolved oxygen: 0.1...10/0.1...20 ppm
    • pH: 0.00...14.00
    • ORP: 0...+1,000 mV
    • Conductivity: 0...20/200/1,000 mS/cm, via mA converter
    • Temperature: 0...100 °C via mA converter
  • Resolution:
    • pH: 0.01 pH
    • ORP: 1 mV
    • Amperometric (e. g. chlorine): 0.001/0.01 ppm, 0.01 vol.%
  • Accuracy: 0.5% of the upper measuring range value
  • Measurement input: SN6 (input resistance > 0.5 x 1012 Ω)
  • Correction variable: Temperature via Pt 100/Pt 1000
  • Correction range temp.: 0 … 100 °C
  • Control characteristic: P/PID control
  • Control: 2-way control
  • Signal current output:
    • 1 x 0/4-20 mA galvanically isolated
    • max. load 450 Ω
    • Adjustable range and allocation (measured variable, correction variable, controlled variable)
  • Control outputs
    • 2 pulse frequency outputs for metering pump actuation
    • 2 relays (limit value or pulse length)
  • Alarm relay: 250 V ~ 3 A, 700 VA changeover contact
  • Electrical connection: 90 – 253 V, 50/60 Hz, 15 VA
  • Ambient temperature: -5 … 50 °C
  • Enclosure rating:
    • Wall mounting: IP 65
    • Control panel version: IP 54
  • Dimensions:
    • Wall mounting: 198 x 200 x 76 mm (WxHxD)
    • Control panel version: 96 x 96 x 145 mm (WxHxD) (D1Cc)
  • Weight: 0.8 kg