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Bulk water meter WSD / WSDE

The impeller axis of the WSD is aligned perpendicular to the tube axis.

Due to the minmal friction, extremly low starting values can be achieved. Thanks to its design advantages, the Woltmann meter type WSD is an ideal choice especially with fluctuating flow rates and different pressure conditions.

The hydrodynamic optimized impeller is driven reliably even at low flow rates. Also under the highest loads it has enough reserve to detect even flow rate peaks. The specially enhanced bearing of the impeller causes low friction and guarantees a long service lifetime of the meter. The robust copper-glass-register is non-diffusive and protected against condensation. It also works reliably under the hardest conditions (e.g. in flooded pits or shafts).

The WSD is optimally prepared for remote reading. Retrofitting of electronic communication modules (EDC radio, EDC M-Bus, EDC pulse) and conventional Reed sensors is possible at any time and without violating the calibration seal.

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


Bulk water meter WSD / WSDE


  • Replacable metrological unit (according to european MID)
  • Flood-proof (IP68) hermetically sealed glass/copper register
  • Low starting flow, high overload security
  • Hydraulic bearing relieve
  • Long-term measuring stability
  • No straight inlet or outlet needed (U0/D0 according to OIML R49 and DIN EN ISO 4064)
  • Optional WP overall length for DN 50, DN 80 and DN 100 available
  • Optional ISO length for DN 50, DN 80 and DN 100 available
  • Materials and coating approved in accordance with KTW / W 270
  • Approved in accordance with MID and OIML


  • For the mesuring of fluctuating flow rates
  • For horizontal installation
  • For cold water up to 50° C

AMR Technologien

  • Retrofittable with reed-sensor
  • Stationary GSM system

Serially equipped with communication interface for:

  • Electronic pulser
  • Wired M-bus
  • Wireless M-Bus according to OMS (Open Metering System)
  • Radio via LPWAN (LoRaWAN™, SIGFOX)

Product options

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


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