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Transmitter DULCOMETER<sup>®</sup> DMTa
Transmitter DULCOMETER® DMTa

The transmitter DULCOMETER® DMTa converts the sensor signals for pH, ORP value, chlorine concentration and conductivity into an interference-insensitive 4-20 mA analogue signal. Flexible, safe and always the optimum resolution of measured value.

Product description

The compact 2-wire transmitter – the link to the PLC and DULCOMETER®.

The 2-wire transmitter DMTa converts the following sensor signals into an interference-insensitive 4-20 mA analogue signal: pH, ORP, temperature, chlorine and conductivity.

It is fed via the 2-wire analogue input of a PLC or via a 2-wire analogue input of a ProMinent controller. The 4-20 mA analogue current proportional to the measured value is transmitted via the same two lines.

The DMTa offers an on-site calibration When a metering pump has been installed, the capacity in litres per hour has to be determined under ... more in the glossary option of the sensor and galvanic separation between the sensor input and measured value output.

Your benefits

  • Flexibility in the choice of measured variable with pH, ORP and temperature
  • Excellent operational safety, thanks to sensor monitoring (pH)
  • Galvanic isolation between the sensor and supply
  • Always the optimum measured value resolution by auto-ranging with conductivity measurement
  • Safety through sensor monitoring of pH for glass breakage and line breakage
  • Various installation options: wall-mounted, installation on an upright or in a control cabinet

Field of application

Measuring technology in water treatment in the following sectors:

  • Processes and process technology
  • Food and beverage industry
  • Chemical industry
  • Pharmaceuticals
  • Waste water treatment
  • Power station technology
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    Technical details

    • Measured variables: pH, ORP, chlorine, temperature and conductivity
    • Accuracy: 0.5% of the upper range value
    • Correction variable: Temperature via Pt 100/Pt 1000 (pH, chlorine, conductivity)
    • Communication interface: PROFIBUS®-DP (wall-mounted only)
    • Protection class: IP 65 (wall-mounted, pipe installation), IP 54 (installation in a control cabinet)
    • Display: Graphic display

    Technical Data

    Measuring range

    pH - 1.00 … 15.00

    - 1200 … +1200 mV ORP voltage

    0.01 … 5.0 mg/l chlorine

    -20 … +150 °C

    1 µS/cm … 200 mS/cm (autoranging), corresponding to cell constant

    Cell constant0.006 … 12.0/cm for conductivity
    Resolution

    0.01 pH

    1 mV

    0.1% from measurement range for chlorine

    0.1 °C

    Conductivity 1/1000 of display value (min. 0.001 µS/cm)

    Accuracy0.5% from measurement range
    Measurement input

    mV terminal (pH, ORP); imput resistance > 5 x 1011 Ω

    Chlorine terminal (DMT chlorine sensors)

    Pt 100/1000 terminal

    Conductivity terminal (2 or 4 wire connector)

    Correction variableTemperature via Pt 100/1000 (pH, chlorine, conductivity)
    Correction rangeChlorine: 5 … 45 °C, pH: 0 … 100 °C, conductivity: 0 … 100 °C
    Current output4…20 mA
    Fault current23 mA
    Feed voltage

    2-wire transmitter, 16 … 40 V DC, nominal 24 V

    PROFIBUS®-DP version, 16 … 30 V DC, nominal 24 V

    Communication interfacePROFIBUS®-DP (wall-mounted version only)
    Permissible ambient temperature0…55 °C
    ClimateRelative humidity up to 95% (non-condensing)
    Enclosure rating

    IP 65 (wall/pipe mounted)

    IP 54 (control panel installation)

    Displaygraphical display
    Housing materialPPE
    Dimensions H x W x D135 x 125 x 75 mm
    Weight0.45 kg

    Downloads for Transmitter DULCOMETER® DMTa ()

    Application Example / Reference ()

    Brochure / Flyer ()

    Catalogue ()

    Certificate / Declaration ()

    Data Sheet ()

    Drawing / Dimensional Drawing ()

    Exploded View / Spare Parts ()

    Material Safety Data Sheet ()

    Operating Instructions ()

    Others ()

    Press Release ()

    Publication / Article ()

    Software ()

    Wiring Diagram ()

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    Overview

    The compact 2-wire transmitter – the link to the PLC and DULCOMETER®.

    The 2-wire transmitter DMTa converts the following sensor signals into an interference-insensitive 4-20 mA analogue signal: pH, ORP, temperature, chlorine and conductivity.

    It is fed via the 2-wire analogue input of a PLC or via a 2-wire analogue input of a ProMinent controller. The 4-20 mA analogue current proportional to the measured value is transmitted via the same two lines.

    The DMTa offers an on-site calibration When a metering pump has been installed, the capacity in litres per hour has to be determined under ... more in the glossary option of the sensor and galvanic separation between the sensor input and measured value output.

    Your benefits

    • Flexibility in the choice of measured variable with pH, ORP and temperature
    • Excellent operational safety, thanks to sensor monitoring (pH)
    • Galvanic isolation between the sensor and supply
    • Always the optimum measured value resolution by auto-ranging with conductivity measurement
    • Safety through sensor monitoring of pH for glass breakage and line breakage
    • Various installation options: wall-mounted, installation on an upright or in a control cabinet

    Application

    Technical Data

    Downloads

    Contact us

     Ralf Kiermaier  Ralf Kiermaier

    Ralf Kiermaier

    Vice President Sales and Marketing, ProMinent GmbH
    info-de@prominent.com

    Save contact

    »We are there for you, whenever you need us. Just get in touch.«

    +49 6221 842 0  Send request   

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