ETKD and ETWD water meters


The counter of the new ETKD and ETWD for hot water is technically modernized and has a new concept. As a result, it is equipped with a protected magnetic coupling, which gives optimum results in terms of measurement accuracy and stability. The new single-jet meter guarantees reliable data recording for the individual calculation of water consumption in apartments and, thanks to numerous technical options, is optimally equipped for future work.

ZENNER offers the new ETKD and ETWD meters in three versions. The basic model is equipped with an 8-roller counting mechanism in accordance with the standards and allows reading results with an accuracy of one liter. The 7-roller counter model additionally offers remote meter reading via a pulse encoder.

The technical breakthrough is the single-jet sensor with a newly developed modulator disc. This enables electronic reading without reverse action and is the basis for remote reading of meter data via radio (wireless reading via M-Bus in OMS) or via M-Bus. For example, in houses with a large number of rooms, the data from many meters can be read out within a short time and then transferred digitally into the costing system.

ETKD has other features besides remote reading capabilities; it is available as an option “Copper Can” (protection class IP 68). With this design, the counter is equipped with a robust copper sheath and is protected from condensation and environmental influences.

  • Dry-run counter with protected magnetic clutch.
  • The standard counter has eight rollers. Non-reverse scanning for radio or M-Bus transmission
  • The counting mechanism rotates around its axis
  • Copper Can, IP 68 enclosure design possible
  • Designed for installation on both horizontal and vertical pipelines
  • MID certified


Principle of operation Single jet water meters
Face-to-face length without fittings 80 mm
110 mm
130 mm
Body material brass
Counting mechanism dry ship
Nominal flow Qn Qn 1,5
Qn 2,5
Constant consumption Q3 (≈ Qn) Q3=2,5 (≈ Qn 1,5)
Q3=4 (≈ Qn 2,5)
Nominal diameter DN (mm) DN 15
DN 20
Nominal size DN (Inch) 1/2 "
3/4 "
Water temperature cold water until 40° C
hot water before 90° C
Counter readings in cubic meters (м³)
Additional options magnetic field protection
protective plastic cover
Kupfer-Einsatz mit Schutzklasse IP 68
signal washer
Counting mechanism with "janitor"
Data transmission system M-Bus
Metrological class at horizon. position (мах.) R 80
Metrological class at vertical. position (мах.) R 40
Maximum working pressure MAP 16


Model overview

Those. information


Catalog of apartment water meters Download
Additional information on the radio water meter from ZENNER Download



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