ZENNER Bulk water meters
WPH-N
Woltman meter with parallel turbine shaft
Woltman parallel type meters are always used when high flow rates with
a relative constant flow rate profile are to be measured. Through its robust
construction they not only are capale of covering a large measuring range
but the measuring accuracy is also long-trem stable.
The hidrodynamic optimized turbine is reliably operated already at small
Flow rates and "upwards" it has enough power reserves to reliably measure
Flow rate peaks. Especially strong bearings with low friction guarantee a
long life of the meter.
Reed sensors, optical and inductive-NAMUR sensors can always be re-
trofitted without damaging the calibration seal. Then the meter can be in-
tegrated with data communication or automation and control systems in a
simple and flexible way.
Performance characteristics in overview
-Low starting flow, high overload security
-Wide measuring range
-Removable measuring insert
-Low head loss
-Hydraulic bearing relieve for long-term measuring stability
-Retrofittable with active and passive pulsers
-Metal protective cover serially, plastic optional
-Evacuated counter protected from condensation
-Dry dial counter with large number rollers simplifies the readability
-For cold water up to 30ºC, with security up to 50ºC
-For horizontal, vertical and inclined installation positions
-High pressure model PN25/40 upon reques
Technical data WPH-N
Nominal flow
Qn
:
40 m³/h
Nominal diameter
DN
:
80 mm
Overall length
L
:
225 mm
Metrological class
:
B
Maximum flow (short-term)
Qmax
:
150 m³/h
Maximum flow (constant)
:
90 m³/h
Transitional flow
Qt
:
3,2 m³/h
Minimum flow
Qmin
:
0,8 m³/h
Flow rate with 0.1 bar head loss
:
70 m³/h
Head loss at Qmax
:
0,2 bar
Display range
min
:
2 L
max
:
9.999.999 m³
Maximum temperature
:
50 °C
Operating pressure, max.
PN
:
16 bar
Height
H
:
255 mm
Flange diameter
D
:
200 mm
