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Bulk water meter WPD/WPHD T90

The bulk water meter WPD/WPHD T90 is suitable for a medium temperature of up to max. 90 °C.

It can be used to record high flow rates in drinking water distribution and in industry, with low pressure loss and a mostly constant flow profile.

The meter is equipped with a 6-roller dry dial register (IP68) and a modulator disc. This enables electronic, reaction-free scanning and is the basis for remote reading of the meter data via radio with LoRaWAN® or wM-Bus. A combined M-Bus / pulse module is also possible.

A mechanical pulser can also be connected in parallel. Factory tested according to MID specifications. All materials, which are used in the drinking water section, comply with the required standards, guidelines and the current German drinking water approval (other country-specific drinking water approvals on request).

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Bulk water meter WPD/WPHD T90
Bulk water meter WPD/WPHD T90Bulk water meter WPD/WPHD T90


Bulk water meter WPD/WPHD T90

Performance characteristics in overview

  • Woltman parallel type
  • Nominal sizes DN50 to DN250
  • Highest precision and reliability even in case of low flow rates
  • Flood-proof (IP68) hermetically sealed glass/copper register
  • Low starting flow and high overload security
  • Wide mesuring range, low pressure loss
  • Hydraulic bearing relieve
  • Long-term measuring stability
  • Swirl-reducing inlet
  • No straight inlet or outlet needed (U0/D0) according to OIML R49 and DIN EN ISO 4064
  • Factory tested according to MID specifications.


  • For the consumption measurement of hot and unpolluted drinking water or service water up to 90 °C
  • For measuring high flow rates
  • Suitable for water glycol heat carriers (without conformity assessment)

AMR options

  • Can be combined with stationary GSM system
  • Can be retrofitted with a mechanical pulser
  • Retrofittable with EDC module (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
  • Woltman parallel
  • Dry Dial protection class IP 68 ("Copper Can")
Nominal Flow Q3 (≈ Qn)
  • Q3=40 (≈ Qn 25)
  • Q3=63 (≈ Qn 40)
  • Q3=100 (≈ Qn 60)
  • Q3=160 (≈ Qn 100)
  • Q3=250 (≈ Qn 150)
  • Q3=400 (≈ Qn 250)
  • Q3=630 (≈ Qn 400)
Nominal Diameter DN (mm)
  • DN 50
  • DN 65
  • DN 80
  • DN 100
  • DN 125
  • DN 150
  • DN 200
  • DN 250
Length without connectors
  • 200 mm
  • 225 mm
  • 250 mm
  • 300 mm
  • 350 mm
  • 450 mm
Metrological Class horizontal (max.)
  • B
Communication Technologies
  • Radio via LoRaWAN®
  • Radio via wireless M-Bus
  • Combined M-Bus and pulse module
  • Hot water up to 90 °C
Operating pressure (max.)
  • MAP 16
Specified Units on Display
  • Cubic Meters (m³)


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