Products (Catalogue)

Bulk water meter Woltman

Bulk water meter Woltman

  • Bulk water meter Woltman

Bulk water meter Woltman

The WPH-N water meter by ZENNER is a Woltman parallel type meter with a parallel turbine shaft, for use in the cold or hot water area.

Bulk water meters of the Woltman parallel type are always employed when high flows with a relatively constant flow profile are to be recorded. These are specially designed for municipal utilities companies, municipal water supply and industry and, thanks to their robust construction, can not only cover a large measurement range, but are very stable over the long term in terms of their measurement accuracy. 

The hydro-dynamically optimised turbine is reliably activated, even where the flow is minimal, and has a large enough "upwards" power reserve even to be able to record flow peaks reliably. Specially reinforced low-friction bearings guarantee the water meters' long service life. Reed contact, optical and NAMUR induction encoders can be retrofitted at any time without damaging the calibration seal. Hence, the water meter can be easily and flexibly integrated into existing data transmission or guidance systems.

Pulser values for Woltman Meters*
DN 40 DN 125 Standard  100 L/Imp.
DN 150 DN 300 Standard  1.000 L/Imp.
DN 400 DN 500 Standard  10.000 L/Imp.
(* other values on request)

Performance Characteristics

Low start
Good overload protection
Large measurement range
Removable measurement insert
Low loss of pressure
Hydraulic bearing pressure discharge for durable measurement stability
Retrofittable with active and passive pulsers
Protective metal cover as standard, plastic optional
Evacuated counter, protected from condensation
Dry dial counter with large indicator wheels makes reading easier
Water meter for cold water to 30°C, accurate to 50°C
Water meter for horizontal and vertical installation positions
High-pressure version PN 25/40 on request
For municipal utilities companies, municipal water supply and industry

Product Features
Measuring Principle Woltman parallel
Length without connectors 200 mm
225 mm
250 mm
300 mm
350 mm
450 mm
500 mm
600 mm
800 mm
Housing Material Cast Iron
Register Dry Dial
Nominal Flow Qn Qn 15
Qn 25
Qn 40
Qn 60
Qn 100
Qn 150
Qn 250
Qn 400
Qn 600
Qn 1000
Qn 1500
Nominal Diameter DN (mm) DN 40
DN 50
DN 65
DN 80
DN 100
DN 125
DN 150
DN 200
DN 250
DN 300
DN 400
DN 500
Temperature Cold Water up to 30° C
Safe up to 50° C
Specified Units on Display Cubik Meters (m³)
AMR Technologies Reed Pulser
Opto Sensor
Metrological Class horizontal (max.) B


Catalog Bulk Water Meters
Installation Instruction Reed Pulser
Installation Instruction Opto sensor