Free floating ball-shaped turbine for wide flow
June 1st 2008 The new MeiStream water meter
from Sensus Metering Systems is
a wide flow range bulk meter
application.The company says
MeiStream will do the job of two
meters in one, merging the high
overload capabilities of WP meters
with the low flow performance of
WS meters.
The basic version, the
MeiStream, combines the features
of standard WP and WS meters. It
covers medium and high flow rates
but also covers the minimum flow
rate of WS meters.The high
accuracy version – the MeiStream
Plus – is, the company says, the
world's first Woltman meter in
metrological class C and has been
designed for applications with very
low flow rates.
The MeiStream meter
series has a free
floating ballshaped
turbine.The
turbine gives
MeiStream
meters wide flow
capability enabling
water companies
and utilities to
minimise unmetered supply,
improve monitoring and leakage
detection and deliver Class B
(MeiStream) and Class C
(MeiStream Plus) in bulk meter
applications.
The turbine floats freely between
two bearing pins and revolves
and lifts from the radial
bearing when minimum
flow is reached – in the
Meistream Plus this is
as low as 0.07 m3/h for
DN 50.
As the flow
increases, the
turbine centres
axially without further
load on the bearing pins,
giving MeiStream the ability
to handle a wide flow range (up
to 90 m3/h for DN 50) and to
perform over fluctuating peaks. More articles from Sensus Metering Systems: | 
