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ZENNER International GmbH & Co. KG
Römerstadt 6
D-66121 Saarbrücken
Telephone +49 681 99 676-30
Telefax
+49 681 99 676-3100
Internet www.zenner.com
Subject to modifications and errors excepted.
Any liability for misprints excluded.
English
Installation instruction:
■
The WS series has been approved at a flow sensitivity class U0/D0.
However, in order to achieve the best results, we recommend observing
the national regulations and accepted codes of practice.
■
For WS series is recommended a straight inlet section of at least 5xDN.
If there is no sufficient inlet section be present, or behind pipe elbows,
we recommend to use a honeycomb rectifier from ZENNER.
■
Ideally, there should be a straight outlet section distance of at least
2xDN.
■
Before installing the meter, the piping must be thoroughly flushed out.
■
The pipe diameter should not be reduced, directly in front and behind
the meter.
■
Flange gaskets must not protrude into the pipe.
■
It should be taken to ensure that the flow direction of the meter coincides
with the flow direction of the pipeline.
■
Valves or other flow regulation should be mounted as possible behind the
meter.
■
The meter should not be installed at the highest point of the pipe ins
-
tallation to prevent air bubbles in the meter and the pipeline is always
completely filled.
■
The meter should be protected against dirt particles like sand or stones by
an appropriate filter.
■
The meter must be protected against pressure blows in the pipeline net
-
work.
■
The maximum temperature of the measured medium must not exceed the
permissible 50°C for cold water.
■
To avoid damage of the measuring insert by pressure surges, the pipeline
must be filled slowly after installation.
■
It is important to ensure that the meter is installed free of stress in the pipe.
In a non-stress-free mounting the meter body may be damaged and water
can escape.
■
The pipeline pressure must not exceed the maximum working pressure of
the meter, as this can lead to leaks and damage of the meter.
■
To prevent the disassembly of the meter we recommend to secure the
connection interface with a safety device (adhesive label, seal, etc.)..
Installation instructions for the replacement of the metrological unit:
■
The exchange of exchangeable metrological units (measuring insert
should only be performed by trained specialist staff.
■
Before changing the measuring insert, the pipe must be rinsed carefully
shut off the pressure side and empty the pipe.
■
The compliance of the interfaces marking (WS1) on the measuring insert
and at the specified interface (body) must be checked.
■
After disassembly of the measuring insert old gaskets / seals must be
removed. The sealing surfaces must be cleaned and checked for damage.
■
It is important to ensure that the inlet area is free of deposit, before a new
metrological unit is installed, because as these can lead to deviations of
the measurement result.
■
Use only the genuine seals, which are delivered together with the measu
-
ring insert. These have to be checked prior to installation for damage and
fit.
■
When using lubricants or assembly pastes for the seals it must be ensured
that they are suitable for contact with drinking water.
■
The screws of the measuring insert crosswise tighten (M12: DN50 - DN100
= 60Nm; M20: DN150 - DN200 = 100Nm).
■
To prevent the disassembly of the replacable measuring insert, it must be
connected with the connection interface (housing) by a sealing wire.
Declaration of conformity
ZENNER International GmbH & Co. KG declares that the product with the
number of EC type-examination certificates DE-14-MI001-PTB-011 complies
with the essential requirements of the EC directive 2014/32/EU (Measuring
instrument directive). ZENNER International GmbH & Co. KG hereby decla
-
res that the products for Remote Metering; complies with the application Wi
-
reless Communications with the essential requirements of the EC directive
1999/5/CE (R&TTE).
The declaration of conformity and the latest information about this product
can be accessed or downloaded from
www.zenner.com
Technical Data WSD / WSDE
Nominal diameter
DN
mm
50
50
65
80
80
100
150
200
Permanent flow
Q
3
m³/h
25
40
40
63
63
100
250
400
Standard measuring
range (*)
Q
3
/Q
1
R
R100H
Operating pressure,
max.
MAP/
PN
bar
16
16
16
16
10
16
16
16
Pulse value Reed
l/pulse 100 100 100 100 100 100 1000 1000
Pulse value
Modulator disk
l/pulse 10
10
10
10
10
10
100
100
Height approx. (**)
mm 228 228 238 292 292 309
416
525
Installation height of
the measuring unit
mm
270 270 270 370 370 382
557
743
Weight approx.
kg
13
13
18
21
21 24,4 57,6 94,3
(*) Other measuring ranges and overall lengths on request.
(**) Total height of WSDE + 18mm
Remark:
These installation instructions are intended only for trained personnel.
Basic installation steps are therefore not described.
Permissible installation positions:
The WS series is intended for installation in the horizontal position only.
