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Bulk water meter WSD / WSDE

Woltman meter with impeller axis arranged vertically to the flow direction

The WSD bulk water meter is used to record high and greatly varying flows in drinking water distribution and industrial applications.

All the materials used in the drinking water sector correspond to the required standards, directives and current Drinking Water Ordinance (German environmental ministry recommendation of hygienically suitable metal materials for drinking water, KTW guidelines and DVGW worksheet W270).

Product images

Woltman bulk water meter WSD
Woltman bulk water meter WSDWoltman bulk water meter WSD


Bulk water meter WSD / WSDE

Performance characteristics in overview

  • Woltman vertical type
  • Optional WP overall length for DN 50, DN 80 and DN 100 available.
  • Optional ISO overall length for DN 50, DN 80 and DN 100 available.
  • For horizontal installation
  • Replaceable MID-compliant metrological unit
  • Highest precision and reliability even in case of low flow rates
  • Flood-proof hermetically sealed glass/copper register (IP68)
  • Low starting flow and high overload security
  • Wide measuring range, low pressure loss
  • Hydraulic bearing relief
  • Durable measuring stability
  • No straight inlet or outlet needed (U0/D0) according to OIML R49 and DIN EN ISO 4064
  • Optimally equipped for remote readout
  • Register rotatable 355°
  • Operating pressure MAP 16
  • Approved in accordance with MID and OIML


  • For the consumption measurement of cold and clean drinking water or service water up to 50°C.
  • For measuring high flows

AMR options

  • Retrofittable with reed pulser
  • Can be combined with stationary GSM system
  • 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), EN 13757-4
    • EDC- combined M-Bus and pulse module

Product options

Measuring Principle
  • Woltman vertical
  • Dry Dial
  • Dry Dial protection class IP 68 ("Copper Can")
Housing Material
  • Cast Iron (GGG)
Nominal Flow Q3 (≈ Qn)
  • Q3=25 (≈ Qn 15)
  • Q3=40 (≈ Qn 25)
  • Q3=63 (≈ Qn 40)
  • Q3=100 (≈ Qn 60)
  • Q3=250 (≈ Qn 150)
Nominal Diameter DN (mm)
  • DN 50
  • DN 80
  • DN 100
  • DN 150
Length without connectors
  • 270 mm
  • 300 mm
  • 360 mm
Metrological Class horizontal (max.)
  • R 200
Communication Technologies
  • Combined M-Bus and pulse module
  • Radio via LoRaWAN®
  • Radio via wireless M-Bus
  • Electronic Pulser
  • Reed Pulser
  • M-Bus
  • Radio Special System (GSM)
  • Cold water up to 50 °C
Operating pressure (max.)
  • MAP 16
Specified Units on Display
  • Cubic Meters (m³)


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