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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

The following list of applications are general examples of generally suitable applications for this product. Please contact your local sales representative to talk about the applicable use of this product in your specific case / environment.

  • Process engineering
  • Food and beverage industry
  • Pharmaceuticals
  • Wastewater treatment
  • Power station technology

    Technical Details

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

    Technical Data

    Measuring range

    pH - 1.00 … 15.00
    -1200 … +1200 mV redox potential
    0.01 … 50.0 mg/l Chlorine
    -20 … +150 °C
    1 µS/cm … 200 mS/cm (auto-ranging), depending on the cell constant

    Cell constant

    0.006 … 12.0/cm for conductivity

    Resolution

    0.01 pH
    1 mV
    0.1 % of measuring range for chlorine
    0.1 °C
    Conductivity 1/1000 of display value (min. 0.001 μS/cm)

    Accuracy

    0.5% from measurement range

    Measurement input

    mV terminal (pH, ORP); input resistance > 5 x 1011 Ω
    Chlorine terminal (DMT chlorine sensors)
    Pt 100/1000 terminal
    Conductivity terminal (2 or 4-line connection)

    Correction variable

    Temperature via Pt 100/1000 (pH, chlorine, conductivity)

    Correction range temp.

    Chlorine: 5 … 45 °C, pH: 0 … 100 °C, conductivity: 0 … 100 °C

    Min. current loop

    4 mA

    Max. current loop

    20 mA

    Fault current

    23 mA

    Feed voltage

    2-wire transmitter, 16... 35 V DC, nominal 24 V
    PROFIBUS DP design, 16... 30 V DC, 24 V nominal

    Communication interface

    PROFIBUS DP (wall-mounted only)

    Min. ambient temperature

    0 °C

    Max. ambient temperature

    55 °C

    Climate

    Relative humidity up to 95% (non-condensing)

    Enclosure rating

    IP 65 (wall-mounted, pipe-mounted)
    IP 54 (installation in a control cabinet)

    Display

    graphical display

    Housing material

    PPE

    Dim. H

    135 mm

    Dim. B

    125 mm

    D dimension

    75 mm

    Weight

    0.45 kg

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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

    ProMinent Fluid Controls Ltd.


    »We are always available to help. Don't hesitate to contact us.«

    +1 888 709 9933 

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