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Controller DULCOMETER diaLog DACb

The DULCOMETER DACb controller uses intelligent controller functions to close the control circuit between ProMinent DULCOTEST sensors and ProMinent metering pumps.

Product description

Intelligent measuring and controlling

The controller DULCOMETER diaLog DACb is our compact all-rounder for water analysis. With its specially designed functionalities, e.g. processing of interference variables and switchover of control parameters, it closes the control circuit between DULCOTEST sensors and ProMinent metering pumps. The measuring and control channels of the DULCOMETER diaLog DACb can be individually configured to meet customer requirements. Everything that you need for the reliable treatment of industrial and process water, drinking water as well as swimming pool water.

Features and Benefits

  • One, two or three channels
  • 2-way PID control
  • Data and event logging with SD Card (optional)
  • Three analog outputs
  • Seven digital inputs
  • Four frequency outputs
  • Two powered relays
  • Measured value trend display
  • pH compensation for Free Chlorine
  • Temperature compensation for pH, conductivity, and fluoride
  • NEMA 4X enclosure
  • LAN/ Ethernet connectivity
  • PROFIBUS® DP, Profinet and Modbus RTU
  • Optional 24V DC power
  • Setting up a new DACa Controller

  • DT Handheld Photometer for Calibration of Sensors

Field of application

The following list is a general representation of basically suitable applications for this product. Please contact your personal representative to discuss the use of the product in your individual application.

  • Potable water and sewage treatment
  • Wastewater treatment
  • Industrial and process water treatment
  • Swimming pool water treatment

    Technical Details

    • Measured variables: pH, ORP, chlorine, chlorine dioxide, chlorite, bromine, conductivity, peracetic acid, hydrogen peroxide, ozone, dissolved oxygen and fluoride
    • Installation, degree of protection: Combination housing (wall mounting, control panel mounting, pillar assembly) IP 67 and IP 66
    • Control: three measuring and control channels, each with independent monodirectional PID controller (optional: two bidirectional PID controllers)
    • 24 V DC protective low voltage supply e.g. by means of solar system or in the wet area of waterworks
    • Temperature compensation for pH and for chlorine dioxide process sensor CDP, pH compensation for chlorine
    • Digital inputs for the processing of control signals, e.g. of sample water limit contacts, remote stop control and to monitor the liquid levels in chemical storage tanks
    • Control outputs for electronically controlled metering pumps and solenoid valves
    • Interference variable processing: simple control of water parameters in flowing water by processing the flow in the control algorithm
    • Adaptation of the controller setpoint to changed process conditions is possible via remote control by means of the mA signal of a PLC or with more stringent requirements via the field bus option

    Technical Data

    Measured variables and measuring ranges

    Connection type mV:
    pH: 0.00 ... 14.00
    ORP potential: -1,500 ... +1,500 mV
    Type of connection mA (amperometric measured variables, measuring ranges corresponding to sensors):
    Chlorine
    Chlorine dioxide
    Chlorite
    Bromine
    Ozone
    Hydrogen peroxide (PER 1 and PEROX H-3E)
    Hydrogen peroxide (PEROX H2.10 P with PEROX transducer V2 order. no. 1047979)
    Peracetic acid
    Dissolved oxygen
    Type of connection mA (potentiometic measured variables, measuring ranges corresponding to transmitters):
    pH
    ORP potential
    Fluoride:
    via module VA and function upgrade package 3 and 4
    Conductivity mA via sensor CCT 1-mA-20 mS/cm
    Temperature:
    via Pt 100/Pt 1000, measuring range 32 … 302 °F (0 … 150 °C)

    Resolution

    pH: 0.01
    ORP voltage: 1 mV
    temperature: 0.2 °F (0.1 °C)
    amperometric analysis (chlorine etc.): 0.001/0.01 ppm, 0.01 vol.%, 0.1 vol.%

    Accuracy

    0.3% based on the full-scale reading

    Measurement input

    pH/ORP (input resistance > 0.5 x 1012 Ω)

    Temperature compensation

    Pt 100/Pt 1000 for pH, chlorine dioxide (CDP) sensor and fluoride

    Correction range temp.

    32…212 °F (0…100 °C)

    pH compensation range for chlorine

    Sensor CLE 3 and CLE 3.1: 6.5 ... 8.5, sensor CBR: 6.5 ... 9.5

    Disturbance signals

    Flow via 0/4 … 20 mA signal or contact water meter, 1 - 500 Hz. The multiplicative interference variable can influence all channels, while the additive interference variable only influences one channel.

    Control characteristic

    P/PID control

    Control

    2 or 3 bidirectional controls

    Analogue outputs

    2 (3) x 0/4 ... 20 mA electrically isolated, max. load 450 Ω, range and assignment (measured, correction, control variable) can be set

    Control outputs

    2 (4) pulse frequency outputs for controlling metering pumps
    2 relays (limit value or pulse length control)

    Alarm relay

    250 V ~3 A, 700 VA contact type, changeover

    Digital control inputs

    4 (7) as a remote control input for the functions pause control / sample water fault, parameter set switch-over, level monitoring of chemical tanks

    Electrical Connection

    100 – 230 V, 50/60 Hz, 25 VA, optional 24 V DC

    Field bus connection

    PROFIBUS® DP, Modbus RTU, PROFINET

    Ambient temperature

    32 … 122 °F (0 … 50 °C) (for use indoors or with a protective enclosure)

    Enclosure rating

    Wall-mounted: IP 66 and IP 67 (NEMA 4X)
    Mounted in control cabinet: IP 54 for control cabinet door

    Tests and approvals

    CE and MET (corresponding to UL as per IEC 61010)

    Housing material

    PC with flame proofing equipment

    Dimensions

    9.84 x 8.66 x 4.8 in (WxHxD)

    Weight

    2.9 | 1.3 lb | kg

    Standard equipment with basic measured variable

    • PID controller with pulse frequency-based metering pump control for 2 metering pumps.
    • 2 analogue outputs for measured value, correction value or control variable (depending on the optional equipment).
    • 4 digital inputs for sample water fault detection, level switch, pause and parameter switch-over.
    • 2 output relays can be programmed either as output for limit value, cycle timer, real-time timer or control output (depending on the optional equipment).
    • Measured variables and language selection during commissioning.
    • Temperature compensation of the pH, chlorine dioxide (CDP) and fluoride measurement via Pt100/Pt1000.
    • 24 operating languages: all European languages as well as Chinese, Russian, Thai, Korean. The operating language is selected during commissioning and can be changed at any time by a keyboard shortcut. The documentation language is selected via the identity code. A data carrier is also supplied that contains all other languages.
    • Device parametrisation is saved and transferred on an SD card.
    • Calibration and event data logger (without SD card, data is saved in the controller).
    • Interference variable processing (flow) via frequency (contact water meter).
    • Subsequent upgrade of the software function by means of an activation key or firmware update.

    Description of the possible measured variables as basic measured variables:

    Module VA mV/temperature + mA sensor input:

    • 1 sensor input for pH or ORP sensor and temperature sensor Pt100/Pt1000
    • 1 sensor input for connecting, e.g. chlorine sensors, such as CBR or pH transducer pHV1 and fluoride including interference variable or pH compensation for chlorine.

    Module AA mA/mA sensor input:

    • 2 sensor inputs for connecting, e.g. chlorine sensors, such as CBR or pH transducer pHV1, including interference variable or pH compensation for chlorine.

    Module VV mV/mV temperature sensor input:

    • 2 sensor inputs for connecting pH and ORP sensors and temperature sensors Pt100/Pt1000, e.g. of type PHER, RHER, PHEI, RHEIC, Pt100SE

    Module L3 conductivity temperature sensor input:

    • 2 sensor inputs for connecting conductive conductivity sensors and temperature sensors Pt100/Pt1000, e.g. of type LFT, LMP

    Optional equipment for third pH measuring channel

    Package 2

    • Third measuring and control variable pH via mV or mA with or pH compensation for chlorine without external setpoint specification via analogue signal for channel 1 without flow interference variable via mA for channel 1
    • Third analogue output.
    • Three additional digital inputs, e.g. for level monitoring, pause and sample water alarm.
    • Control two additional metering pumps.

    Package 3

    • Third complete measuring and control channel, any measured variable, with PID controller.
    • Third analogue output for measured value, correction value or control variable (depending on the optional equipment).
    • Three additional digital inputs, e.g. for level monitoring, pause and sample water alarm.
    • Temperature compensation of the pH, chlorine dioxide (CDP) and fluoride measurement.

    Package 4

    • Combination of packages 2 and 3 (only one channel for amperometric sensors is available with the mA interference variable).

    Communication options

    • Measurement data logger with SD card.
    • Visualisation of the measured data using a web server via LAN and PC/tablet PC and web browser.
    • PROFIBUS DP, Profinet or Modbus RTU.

    Hardware upgrade

    • Protective RC circuit for output relay: Protects the output relay if inductive loads are to be switched (e.g. solenoid valves or motors). Not with 24 V DC electrical connector.

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    Overview

    Intelligent measuring and controlling

    The controller DULCOMETER diaLog DACb is our compact all-rounder for water analysis. With its specially designed functionalities, e.g. processing of interference variables and switchover of control parameters, it closes the control circuit between DULCOTEST sensors and ProMinent metering pumps. The measuring and control channels of the DULCOMETER diaLog DACb can be individually configured to meet customer requirements. Everything that you need for the reliable treatment of industrial and process water, drinking water as well as swimming pool water.

    Features and Benefits

    • One, two or three channels
    • 2-way PID control
    • Data and event logging with SD Card (optional)
    • Three analog outputs
    • Seven digital inputs
    • Four frequency outputs
    • Two powered relays
    • Measured value trend display
    • pH compensation for Free Chlorine
    • Temperature compensation for pH, conductivity, and fluoride
    • NEMA 4X enclosure
    • LAN/ Ethernet connectivity
    • PROFIBUS® DP, Profinet and Modbus RTU
    • Optional 24V DC power

    Video

    Application

    Technical Data

    Downloads

    Contact us

    »We are looking forward to your enquiry.«

    +1 412-787-2484 

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