ProMinent GmbH
Im Schuhmachergewann 5-11
69123 Heidelberg
Germany




Two-Wire Transmitter DULCOMETER® DMTa - ProMinent GmbH

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 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

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 constant: 0.006 … 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)

Accuracy: 0.5% 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 variable: Temperature via Pt 100/1000 (pH, chlorine, conductivity)
Correction range: Chlorine: 5 … 45 °C, pH: 0 … 100 °C, conductivity: 0 … 100 °C
Current output: 4…20 mA
Fault current: 23 mA
Feed voltage:

  • 2-wire transmitter, 16 … 40 V DC, nominal 24 V
  • PROFIBUS®-DP version, 16 … 30 V DC, nominal 24 V

Communication interface: PROFIBUS®-DP (wall-mounted version only)
Permissible ambient temperature: 0…55 °C
Climate: Relative humidity up to 95% (non-condensing)
Enclosure rating

  • IP 65 (wall/pipe mounted)
  • IP 54 (control panel installation)

Display: graphical display
Housing material: PPE
Dimensions H x W x D: 135 x 125 x 75 mm
Weight: 0.45 kg

PDF Two-Wire Transmitter DULCOMETER® DMTa
Model

DULCOMETER® DMTa

Company name
ProMinent GmbH
Homepage https://www.prominent.com/en/Products/Products/Measuring-Control-and-Sensor-Technology/Transmitters/p-dulcometer-dmta.html
Business Type Manufacturer
Exportregion Worldwide