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Positive Displacement meter RTKD-M and RTKD-M-CC

Rotary piston dry-dial meter for cold water Available with flood-proof (IP 68) hermetically seal glass/copper register

The RTKD positive displacement meter records the flow rate according to the volumetric measuring principle. It offers a very high measuring range, excellent measuring stability and therefore guarantees extremely precise consumption recording.

The RTKD-M features a very low starting flow and is permitted for all installation positions.
The meter is equipped with an 8-digit dry-dial meter register and a modular disc. This enables electronic, non-reactive scanning and is the basis for remote reading of meter data via radio with LoRaWAN® or wM-Bus. A combined M-Bus/pulse module is also possible.

Product images

Positive Displacement Meter RTKD
Positive Displacement Meter RTKDD-counter with magnet pointerD-counter with modulator discPositive displacement meter RTKD copper can (IP68)Positive Displacement Meter RTKD-M with EDC communication module


Positive Displacement meter RTKD-M and RTKD-M-CC

Performance characteristics in overview

  • Rotary piston dry-dial meter for any installation position (except overhead)
  • Highest precision and reliability even in case of low flow rates
  • Register cap made of UV-resistant polymer plastic
  • Available with glass/copper register (IP68)
  • Optional RTKD-N with 7-digit register 10 l/pulse
  • Optional RTKD-N with 8-digit register 1 l/pulse
  • Register rotatable 355°
  • Operating pressure MAP 16
  • Approved in accordance with MID


For the consumption measurement of cold and clean drinking water or service water up to 50°C

AMR options

  • As standard with communication interface for EDC modules (Electronic Data Capture):
    • EDC LPWAN radio module (868 MHz) for LoRaWAN®
    • EDC wireless M-Bus radio module (868 MHz)
    • EDC- combined M-Bus and pulse module

Product options

Measuring Principle
  • Positive Displacement Meters
  • Dry Dial
Housing Material
  • Brass
Nominal Flow Q3 (≈ Qn)
  • Q3=1,6 (≈ Qn 1)
  • Q3=2,5 (≈ Qn 1,5)
  • Q3=4 (≈ Qn 2,5)
Nominal Diameter DN (mm)
  • DN 15
  • DN 20
Nominal Diameter (inch)
  • 1/2"
  • 3/4"
Length without connectors
  • 105 mm
  • 110 mm
  • 115 mm
  • 165 mm
  • 170 mm
  • 190 mm
Metrological Class horizontal (max.)
  • R 250
  • R 400
  • Cold water up to 50 °C
Operating pressure (max.)
  • MAP 16
Communication Technologies
  • Radio via LoRaWAN®
  • Radio via wireless M-Bus
  • Electronic Pulser
  • Reed Pulser
  • M-Bus
Additional Options
  • Copper Can (IP 68)
  • Modulator Disc for inductive sensors
  • Anti-Magnet-Protection
  • Nano Coating (Antifog)
  • Wiper for lens (Antifog)
Specified Units on Display
  • Cubic Meters (m³)


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