Apator Powogaz MWN Nubis User manual

Flanged water meters, DN40-400 IP68/IP65-CE
Flanged flow meters, DN40-250 IP68/IP65
Operating Manual
MWN Nubis
MK
JS Impero
MH
MWN/JS- coupled
Operating Manual
WI

Flanged water meters / flow meters, DN40-400-IP65/68-CE – Operating Manual
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Contents
1. Subject............................................................................................................................3
2. Technical data: reference standards and regulations................................................7
3. Operating principle of water/flow meters ....................................................................8
4. Selecting the correct size of the water meter..............................................................8
5. Selecting the correct size of the irrigation flow meter ...............................................9
6. Delivery inspection......................................................................................................10
7. Water meter installation requirements ......................................................................11
8. Irrigation flow meter installation requirements.........................................................12
9. Priming with water, commissioning, and operation of the water/flow meter .........14
10. Storage and transport ..............................................................................................14
11. Troubleshooting .......................................................................................................14
12. Safety and environmental requirements ................................................................15
13. Pulse output value and installation diagrams for water/flow meters...................16
14. Disposal of waste products and packaging ...........................................................18
15. Declaration of conformity ........................................................................................18
16. Your feedback...........................................................................................................18

Flanged water meters / flow meters, DN40-400-IP65/68-CE – Operating Manual
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1. Subject
Thank you for purchasing this product. This Operating Manual applies to the DN 40÷400 flanged water
meters and DN 40÷250 irrigation flow meters manufactured by Apator Powogaz S.A. in Poznań according to
the manufacturing procedures under the Integrated Environmental, Health and Safety Management System.
Please read the entire Operating Manual carefully before installation of the flanged water meters for the
measurement of volumetric consumption of piped potable water, household water, and industrial process
water, or of the WI irrigation flow meters for the measurement of water consumption from surface bodies and
the discharge water from sewage treatment plants.
Table 1. Types and applications of water/flow meters
Type – Version
Application
MWN (WPH-01) Nubis –
horizontal rotor axis
propeller
MK-01 – chamber-mount, vertical rotor axis propeller
MH-01 – fire hydrant, vertical rotor axis propeller
JS Impero – single-jet vane-wheel
•Cold water: min. 0.1°C – max. 50°C
•Max operating pressure: 1.6 MPa (16 bar)
•IP68 –
hermetic counter (new version from
2021 and complete with #UTIP connector,
compatible with
induction transmitter
modules)
•IP65 –
hermetic counter, compatible with
optical transmitter modules
MWN/ JS – coupled, with spring-action valve
•Cold water: min. 0.1°C – max. 50°C
•Max operating pressure: 1.6 MPa (16 bar)
•IP68 – hermetic counter (new
version from
2021 and complet
e with #UTIP connector,
compatible with induction transmitter
modules)
•IP65 –
hermetic counter, compatible with
optical transmitter modules
MWN NKOP (WPH-N-01) –
propeller, compatible
with transmitters
MWN/JS-S NKP –
coupled, compatible with NK
transmitter modules
MK-01 NKOP – propeller, compatible with NK and
NO transmitter modules
MH-01 NKOP – propeller, compatible with NK and
NO transmitter modules
JS Impero NKOP – propeller,
compatible with NK
and NO transmitter modules
•Cold water: min. 0.1°C – max. 30°C
•Max operating pressure: 1.6 MPa (16 bar)
•IP65 –
hermetic counter, compatible with
optical transmitter modules
•IP68 –
hermetic counter (new version from
2021 and complete with #UTIP connector,
compatib
le with induction transmitter
modules)
•NKOP – versio
n with an IP65 counter
compatible with NK and NO transmitter
modules
oNK – reed relay pulse transmitter
oNO – optoelectronic pulse

Flanged water meters / flow meters, DN40-400-IP65/68-CE – Operating Manual
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transmitter
•
Max operating pressure: 1.6 MPa (16 bar)
MWN130 (WPH130-01) – horizontal rotor axis
propeller
•Hot water: max. 130°C
•Max operating pressure: 1.6 MPa (16 bar)
•IP65 –
hermetic counter, compatible with
optical transmitter modules
MWN130 NKP (WPH130-N-01) – propeller,
compatible with NK and NO transmitter modules
•Hot water: max. 130°C
•Max operating pressure: 1.6 MPa (16 bar)
•NKP –
IP65 counter compatible with NK
transmitter modules
•NK – reed relay pulse transmitter
WI
•Cold water: min. 0.1°C – max. 30°C
•Max operating pressure: 1.6 MPa (16 bar)
•IP65 – hermetic counter
•IP68 –
hermetic counter (new version from
2021 and com
plete with #UTIP connector,
compatible with induction transmitter
modules)
WI-NKP
•Cold water: min. 0.1°C – max. 30°C
•Max operating pressure: 1.6 MPa (16 bar)
•NKP – IP65
counter compatible with NK
transmitter modules
•NK – reed relay pulse transmitter
#UTIP – Universal TI Plug

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Table 2. Installation orientation
Water/flow meter type
Application
Counter position
Horizontal
H
Vertical
V, H
MWN (WPH-01) Nubis
MWN130 (WPH130-01)
*)
MWN/JS-S
MK-01
MH-01
JS Impero
*)
WI
*)
* Maximum installation orientation deviation from the vertical: ±3º
Example part designation marking of the MWN (WPH-01) Nubis water meter
MWN - 130 - 50 - NKP …
Type
Temperature
Nominal diameter
Version with the counter compatible with the NK transmitter module
Design version

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Example part designation marking of a coupled water meter
MWN/JS – 50/4.0 - NKP
Table 3. Permanent flow rate Q3 vs. water meter type
Water meter
/ flow meter
type
MWN
(WPH-01)
Nubis
MWN130
(WPH130-
01)
MK-01
MH-01
JS
Impero
MWN/JS WI
Size
(mm)
Permanent flow rate, Q3 (m3/h)
40 25 25 - - - - 25
50
40 25 25 25 25
(50*)
25 25
65 63 40 - 40 40
(60*)
40 40
80
100 63 63 - 63
(90*)
63 63
100
160 100 100 - 100
(135*)
100 100
125
250
160
-
-
-
-
160
150
400
250
250
-
-
250
250
200
630
400
-
-
-
-
400
250
1000
630
-
-
-
-
630
300
1600
1000
-
-
-
-
-
400**
1000
-
-
-
-
-
-
*Maximum instantaneous flow rate in case of fire: < 2 h
** Available by special order
Master / side water meter type
Master water meter size (nominal diameter) / Side water meter
size (permanent flow rate)
Version with the counter compatible with the NK transmitter
module
Master / side water meter type

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2. Technical data: reference standards and regulations
The technical data is specified in the Technical Data Sheets issued for specific water meter types.
The water meters meet the following standards and regulations:
1. Directive 2014/32/EU of the European Parliament and of the Council of 26 February 2014 on
the harmonisation of the laws of Member States related to the making available on the market
of measuring instruments
2. OIML 49-1:2006 – Water meters intended for the metering of cold potable water and hot water.
Part 1: Metrological and technical requirements.
3. OIML R 49-2:2004 – Water meters intended for the metering of cold potable water and hot
water. Part 2: Test methods.
4. OIML R49:2013-1 – Water meters intended for the metering of cold potable water and hot
water.
Metrological and technical requirements.
5. OIML R 49-2:2013 – Water meters intended for the metering of cold potable water and hot
water. Part 2: Test methods.
6. OIML R 49-3:2013 – Water meters intended for the metering of cold potable water and hot
water. Part 3: Test report format.
7. EN 14154-1:2005+A2:2011 – Water meters. Part 1: General requirements
8. EN 14154-2:2005+A2:2011 – Water meters. Part 2: Installation and conditions of use
9. EN 14154-3:2005+A2:2011 – Water meters. Part 3: Test methods and equipment
10. EN ISO 4064-1:2014/2017 – Water meters for cold potable water and hot water. Part 1:
Metrological and technical requirements.
11. EN ISO 4064-2:2014/2017 – Water meters for cold potable water and hot water. Part 2: Test
methods.
12. EN ISO 4064-4:2014/2017 – Water meters for cold potable water and hot water. Part 4: Non-
metrological requirements not covered in ISO 4064-1.
13. EN ISO 4064-5:2014/2017 – Water meters for cold potable water and hot water. Part 5:
Installation requirements.
14. PZH National Institute of Hygiene certificate (all materials used in Apator water meters have
Hygiene Certificates for use with potable water)
15. Polish Regulation of the Minister of Development dated 02/06/2016 and concerning requirements for
measuring instruments
16. Polish Regulation of the Minister of Development and Finance dated 13/04/2017 ad concerning legal
metrological inspection of measuring instruments
The water meters in production may vary from PN-EN 14154 in installation length. This depends on the
specific needs of the end user.
The following standards specify the basic requirements for installation of the water/flow meters:
•PN-B-10720 – Water pipelines. Installation of water meter sets in water supply systems. Acceptance
requirements and tests.
•PN-EN 14154-2: Installation and conditions of use.
The flow meters meet the following standards and regulations:
1. PN-EN 14268 – Meters for irrigation water
2. PN ISO 4064 as applicable to technical characteristics
3. PN-ISO 4064-3 of Feb. 1997, Section 10.1.3.2
4. Hygiene Certificate

Flanged water meters / flow meters, DN40-400-IP65/68-CE – Operating Manual
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3. Operating principle of water/flow meters
The MWN (WPH-01) Nubis water meter comprises a body, metering unit, and counter mechanism. The flow
of water passing through the water meter drives the propeller installed in the metering unit. The propeller is
co-axial to the body bore and rotates a magnet on an axle via a worm and wheel transmission. The magnet
in the wet section of the water meter is coupled to the counter magnet installed in the dry section of the water
meter. A system of gears drives the pointers and barrels of the water meter, which then indicates the
measured flow of water.
The MWN/JS coupled water meter comprises a type MWN master water meter as specified above and a
side water meter. The installed side water meter can be a type JS single-jet vane-wheel dry water meter. A
spring-action switchover valve governs the flow path of the metered water, so that if the water flow is low the
water is diverted to the side water meter and if the water flow is high the water is diverted to the master water
meter. The spring-action switchover valve operates automatically and requires no external source of power.
Operation of the spring-action switchover valve means that the measurement ranges of the master and side
water meters overlap. In this way the coupled water meter has a wide measurement range, which starts from
the minimum volumetric flow of the side water meter and completes with the maximum volumetric flow of the
master water meter.
The MK-01 water meter comprises a body, metering unit, and counter mechanism. The inlet duct by which
the water enters the body is vertical and the outlet duct for the water is horizontal. The flow of water passing
through the water meter drives the propeller installed in the metering unit. The propeller is oriented vertically.
The magnet in the wet section of the water meter is coupled to the counter magnet installed in the dry
section of the water meter. A system of gears drives the pointers and barrels of the water meter, which then
indicates the measured flow of water.
The MH-01 water meter comprises a body, metering unit, and counter mechanism, and optionally, may
feature a fire hydrant standpipe. The inlet duct by which the water enters the body is vertical and the outlet
duct for the water is horizontal. The flow of water passing through the water meter drives the propeller
installed in the metering unit. The propeller is oriented vertically. The magnet in the wet section of the water
meter is coupled to the counter magnet installed in the dry section of the water meter. A system of gears
drives the pointers and barrels of the water meter, which then indicates the measured flow of water.
The JS Impero water meter comprises a metering unit and counter mechanism. The flow of water passing
through the water meter drives the propeller installed in the metering unit. The propeller axis is perpendicular
(vertically oriented) to the body bore centreline. The magnet in the wet section of the water meter is coupled
to the counter magnet installed in the dry section of the water meter. A system of gears drives the pointers
and barrels of the water meter, which then indicates the measured flow of water.
The WI irrigation flow meter comprises the metering unit and the counter mechanism. The flow of water
passing through the water meter drives the vane wheel installed in the metering unit. The vane wheel has
the axis perpendicular to the body bore centreline and operates like an undershot water wheel. A worm and
wheel transmission with a magnetic coupling allow the vane wheel to propel the set of gears for the counter
mechanism in the dry section. The motion of the gears is translated into the meter’s pointers and barrels,
which then indicate the measured flow of water.
4. Selecting the correct size of the water meter
The proper selection of the size criterion (for DN, the nominal diameter) of the water meters should always
the operating conditions, i.e. the mean and maximum operating volumetric flow of water.
A water meter that is too large not only increases the purchase costs, but also reduces the water
measurement indication accuracy when the water flow is low.

Flanged water meters / flow meters, DN40-400-IP65/68-CE – Operating Manual
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A water meter that is too small overstresses the mechanism, resulting in premature wear of the moving
components.
For your water meter to perform properly within its measurement range limits and maximum indication error
limits, its operating range must be precisely determined, which can also be achieved based on monthly water
demand, considering the minimum and maximum volumetric flow values (for existing installations, it is
recommended to monitor the water supply).
It is recommended to choose a water meter size where the maximum foreseen volumetric flow of the system
is equal to the following:
•0.5 to 0.7 of permanent flow rate Q3for type MWN (WPH-01) Nubis water meters;
•0.3 to 0.4 of permanent flow rate Q3for type MWN130 (WPH130-01) water meters;
•Q3for the coupled water meters;
•0.6 to 0.8 of permanent flow rate Q3for type MK-01 water meters;
•0.6 to 0.8 of permanent flow rate Q3for type MH-01 water meters;
•0.5 to 0.7 of permanent flow rate Q3for type JS Impero water meters;
The permanent flow rate Q3values for specific water meter types are listed in Table 3.
The application of the optimum water meter type also depends on the water temperature and pressure, the
conditions for water meter installation in the water supply pipe, and whether the indications and the
volumetric flow measurement values need to be output remotely or not. Another criterion for selection of the
water meter size is the pressure loss in the system caused by installation of the water meter.
Select a water meter such that frequent or prolonged flow rates are not within the operating range of the
spring-action switchover valve. The switchover operating ranges are shown in the specific Technical Data
Sheet.
5. Selecting the correct size of the irrigation flow meter
The proper selection of the size criterion (for DN, the nominal diameter) of the irrigation flow meters should
always depend on the operating conditions, i.e. the mean and maximum operating volumetric flow of water in
the pipe system to which the flow meter is to be connected rather than the diameter of the pipe. An irrigation
flow meter that is too large under actual operating conditions not only increases the purchase costs, but it
also reduces the water measurement indication accuracy when the water flow is low. An irrigation flow meter
that is too small overstresses the mechanism, resulting in premature wear of the moving components. For
your irrigation flow meter to perform properly within its measurement range and maximum indication error
limits, its 24-hour operating range must be precisely determined, although this can also be achieved based
on monthly water demand, considering the maximum volumetric flow values. The maximum permitted loads
of the irrigation flow meters are listed in Table 4.

Flanged water meters / flow meters, DN40-400-IP65/68-CE – Operating Manual
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Table 4. Maximum permitted loads for irrigation flow meters
Type (irrigation flow meter size) Maximum operating flow rate Maximum monthly load limit
DN (mm) m3/h m3/month
40 25 10,800
50 30 12,960
65 50 21,600
80 80 34,400
100 125 54,000
125 175 75,600
150 250 108,000
200 450 194,000
250 70 302,000
6. Delivery inspection
The measurement device as supplied by the manufacturer requires inspection to verify that no external
shipping damage is present, especially on the body, the body flanged ends, the counter guard, and the
wiring (if the version includes a transmitter module).
Verify that the tamper seals match the verification or security markings, that the seals are securely installed,
and that the water/flow meter part designation markings are present.
The following markings are affixed to the counter dial, nameplate, or body of each water meter:
•Manufacturer’s name/logo and full address details;
•MID type examination marking;
•Type trademark;
•Serial number;
•Production year;
•The metrological marking comprises the capital letter M and the two last digits of the production year
in which the marking was applied to the measurement device;
•Direction of flow, shown with an arrow (on the body);
•The V mark for vertical piping, where the water meter is to be installed in the vertical orientation;
•The H mark for horizontal piping, where H denotes that the water meter is to be installed in the
horizontal orientation with its counter pointing upward;
•The H mark for horizontal piping, where H denotes that the water meter is to be installed in
the horizontal orientation with its counter pointing sideways;
•The HV mark for horizontal and vertical piping water meters;

Flanged water meters / flow meters, DN40-400-IP65/68-CE – Operating Manual
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•Volumetric flow value, Q3 (m3/h);
•Measurement unit designation, m3(see the counter scale);
•Maximum pressure loss, Δp;
•For cold water meters: the maximum temperature limit, e.g. T50 (50°C),
•For hot water meters: the maximum temperature limit, e.g. T130 (130°C);
•Maximum pressure limit: MAP16 (PN 16).
7. Water meter installation requirements
7.1 The installation location should provide easy access for the process of installation, removal, servicing,
and reading, and be separated from rooms in use or for storage. The installation location should be sheltered
from the weather, including sub-zero temperatures, high humidity levels, dust, and the effects of electrical
power and gas systems. If there is no installation location suitable according to these criteria, the water
meter can be installed in a dedicated chamber, but the installation location inside it must be sufficiently high
above the chamber bottom. The chamber must have a sediment trap or a water drain discharging to the
outside.
7.2 The water meter must not be exposed to shocks or vibration while installed due to nearby equipment or
to excessively high ambient air temperatures, contaminants, flooding with water, or corrosive agents. The
installation location temperature must be between +5°C and +55°C. Protect the water meter from hydraulic
turbulence, including cavitation and water rams.
7.3 Provide stop valves upstream and downstream of the water meter connections to enable isolation from
the water for removal or repair of the water meter. The stop valves must expose the entire water supply pipe
bore.
7.4 If the water flow is expected to be contaminated during operation of the water meter,install a suitable
filter or trap between a straight upstream section of the piping and the upstream stop valve.
7.5 To prevent the installation fastening from stressing the water meter body, it is recommended to use
expansion (deflection) couplings installed on the meter’s discharge side. The coupling must permit the
reduction of the length by telescopic sliding of its sleeve.
7.6 The piping route geometry at the installation location must prevent air blocks from forming within the
installation length of the water meter. The water meter must remain completely filled with water, so the water
supply piping downstream of it must not have a drop in the downstream direction (see Fig. 1).
Fig. 1. Installation of the water meter
Water meter

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7.7 Prevent overstressing of the water meter due to the attached piping or other equipment. If necessary,
install the water meter on a pedestal or a bracket. The upstream and downstream piping must be properly
fastened so that no component of the system shifts by the action of water when the water meter is removed
or detached on one of its ends.
7.8 The operating pressure at the inlet of the water meter’s measurement chamber must be ≤ the maximum
allowed pressure (MAP) for which the water meter is rated. The minimum allowed pressure (MAP) at the
water meter’s outlet must be 30 kPa (0.3 bar).
7.9 The installation of the water meter in the system must conform to the intended operating orientation
(horizontal or vertical, as applicable by specification) (see Table 2).
7.10 The MWN (WPH-01) Nubis and JS Impero water meters can be installed without straight piping
sections upstream (U0) and downstream (D0).
7.10.1 Special installation requirements for the water meters
The piping can feature straight sections upstream and downstream for protection against the negative effects
of water flow turbulence due to bends, valves, and other system components, the upstream side can use a
straight piping section with a length of L=3DN (the DN of the water meter).
If the water meter is to be installed downstream of a double bend, a check valve, a pump, or any other
component which generates significant flow turbulence, double the specified upstream straight piping section
length as follows: 2L; if the turbulence-generating component is a piston pump, triple the length: 3L. To avoid
an upstream straight section this long, a flow vane can be installed upstream of the water meter. The
turbulence forming downstream of the water meter is generally inconsequential to reading accuracy.
However, if backflows occur then there is a risk of failure of the propeller/vane wheel bearings. It is
recommended to counter this by installing (if feasible) a short straight section downstream of the water
meter, and the section length must be: L1= 2DN.
CAUTION! Never attempt to weld a system in which a water meter is installed, as it this may cause a failure!
7.11 The upstream and downstream pipe sections must be concentric to one another.
Install all seals concentric to the pipe bore centreline. It is not permitted to install the water meter offset
(eccentrically) from the pipe centreline, and especially to have the piping-to-water meter seals offset and
obstructing the pipeline bore, as this may cause a flow turbulence.
7.12 The water flow through the water meter must be in the direction shown by the flow arrow affixed to both
sides of the water meter body.
7.13 The water meters are intended for connection by flanged ends. The flanges are fabricated as per PN-
ISO-7005-2 and PN10 in the standard version. Other fabrication reference standards are available on
request. The system pipe connections with the water meter must have flanges with the same bolt hole
pattern as the water meter flanges.
7.14 The water meters must be secured to the pipes with bolts and washers in a size compatible with the
flange bolt holes.
8. Irrigation flow meter installation requirements
8.1 The installation location should provide easy access for the processes of installation, removal, servicing
and easy reading, as well as protecting the irrigation flow meter from sub-zero temperatures.

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8.2 Install stop valves upstream and downstream of the irrigation flow meter connections to enable isolation
from the water for removal of the irrigation flow meter or its measuring insert for inspection or repairs.
8.3 The piping route geometry at the installation location must prevent air blocks from forming within the
installation length of the irrigation flow meter. The irrigation flow meter must remain completely filled with
water, so there must not be a drop in the downstream direction of the pipework (see Fig. 2).
Fig. 2. Flow meter installation
8.4 For protection against the negative effects of water flow turbulence due to bends, valves, and other
system components, the upstream side can have a straight section with a length of L=5DN (the DN of the
flow meter). If the flow meter is to be installed downstream of a double bend, a check valve, or a pump,
double the specified upstream straight piping section length as follows: 2L; if the turbulence-generating
component is a piston pump, triple the length: 3L. To avoid an upstream straight piping section this long, a
flow vane can be installed upstream of the irrigation flow meter. The downstream straight piping section
length for the irrigation flow meter must be: L1= 3DN.
8.5 All connections with the installed irrigation flow meter must be in accordance with good practice. Install
all seals concentric to the piping bore centreline. It is not permitted to install the irrigation flow meter offset
(eccentrically) from the pipe centreline, and especially to have the pipe-to-flow meter seals offset and
obstructing the pipe bore, as this may cause turbulent flow.
8.6 The water flow through the irrigation flow meter must be in the direction shown by the flow arrow affixed
to both sides of the guard. The stop gate valves, if installed upstream and downstream of the irrigation flow
meter, must be fully open while the water is flowing.
8.7 When commissioning a new water supply system or repairing pipework before installation of an irrigation
flow meter, the pipework to be connected to the meter must be thoroughly flushed to remove all debris and
contamination which could damage the flow meter.
8.8 The irrigation flow meters must be secured to the pipework with bolts and washers in a size compatible
with the flange bolt holes.
Irrigation flow meter

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9. Priming with water, commissioning, and operation of the
water/flow meter
9.1 Before installing a water/flow meter in the piping, flush the piping to remove all debris and contamination.
If a filter is to be used, it must be cleaned before the installation process. For the flushing process, the
water/flow meter must be replaced with a straight pipe spool.
9.2 Prior to its installation, perform a functional test of the water/flow meter: spin the propeller/vane wheel
and check it for the correct direction of rotation. Verify the condition of the tamper seals.
9.3 With the water/flow meter installed in the piping, open the water flow starting at a small rate with all vents
open so that the air bled from the system does not cause the propeller/vane wheel to overspeed, which may
result in bearing failure during a dry run.
9.4 During operation, the stop valves upstream and downstream of the water/flow meter must be fully open.
9.5 Having completed the commissioning tasks, verify that the measurement device is operational: its
reading should increase as the water flow increases. Specifically inspect that the measurement device
and/or its connections do not leak water.
9.6 During operation of the measurement device periodically verify that the actual operating conditions are
within the limits of intended use, especially the limits of pressure, temperature, and flow rate, and that the
measurement device and/or its connections do not leak water.
10. Storage and transport
The brand-new or removed existing water/flow meter must be kept with the counter upwards or to the side,
indoors, away from corrosive vapours, odours, and other agents which might be detrimental to the meter.
The indoor storage temperature must be between +5°C and +50°C at a relative air humidity not exceeding
90%. Protect the measurement device during storage and transport from vibration and shock which may
damage the enclosure or internal components. Transport the meter in sheltered vehicles, in its original
packaging or its substitute, whichever fully protects the meter from damage. If transported in low-temperature
weather conditions, it is best to keep the product dry.
11. Troubleshooting
If the counter fails to indicate despite the water flowing through the water/flow meter, check that the
propeller/vane wheel is not jammed by dirt. If the meter fails to operate, even if clean and unclogged, or
whenever other damage is evident, return the meter for repairs with an appended claim for the discovered
defects. If the pulse transmitter module fails, report this to the manufacturer. If the troubleshooting is
ineffective despite any instructions received from the manufacturer, return the meter for repairs.

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12. Safety and environmental requirements
12.1 The water/flow meter is a measuring instrument which is safe to use, provided it is installed properly
and operated according to this Operating Manual.
12.2 Hazards exist during installation, servicing and operation of the product:
a) Mechanical hazards (applicable to water/flow meters):
•Fall during improper handling;
•Water leaks, leading to flooding of the product due to improper installation or a water pressure
exceeding the rated MAP;
b) Thermal hazards (applicable to water meters):
•Burns from touching the water meter while it is in operation or a leak of hot water.
12.3 The mechanical hazards are reduced by the external shape of the measuring device, which facilitates
handling. Large devices have fixtures for attachment to lifting equipment. The thermal hazards can be
prevented by application of dedicated guards.
12.4 The installation and servicing of the water/flow meter requires a suitable location with firm ground that
will not cause a hazard of falling.
12.5 The water/flow meter components are not harmful to human health or the environment. All
measurement devices are delivered with hygiene certificates indicating their suitability for use with drinking
water.
12.6 The applied ingress protection rating of the counters (which can be IP65 or IP68) and other design
solutions protect the water/flow meter against the negative effects of water vapour condensation interfering
with the correct reading and operation of transmitter/data modules.
12.7 Classification of environmental conditions
•Classification of mechanical environmental conditions – class M1, as per the Polish
Regulation of the Minister of Development of 02/06/2016 and Directive 2014/32/EU of the
European Parliament and of the Council of 26 February 2014.
•Classification of climatic environmental conditions – Class B, as per PN-EN ISO 4064-2:2014
and Directive 2014/32/EU of the European Parliament and of the Council of 26 February
2014.
•Classification of electromagnetic environment conditions – Class E1 and E2, as per EN ISO
4064:2014 and Directive 2014/32/EU of the European Parliament and of the Council of 26
February 2014.

Flanged water meters / flow meters, DN40-400-IP65/68-CE – Operating Manual
Page 16 of 19
13. Pulse output value and installation diagrams for
water/flow meters
13.1 Standard water meter version pulse value for the NK transmitter module
Nominal diameter, DN (mm)
Cold water
Hot water
Pulse value (m3)
Pulse value (m3)
40
0.01
0.01
50; 65; 80; 100; 125
0.1
0.1
150; 200; 250; 300;
1
1
400
10
-
13.2 Standard water meter version pulse value for the NO transmitter module
Nominal diameter, DN (mm)
Pulse value (litres)
40; 50; 65; 80; 100; 125
1
150; 200; 250
10
300; 400
105.2632
13.3 Irrigation flow meter pulse value for the NK transmitter module
Nominal diameter, DN (mm)
Pulse value (m3)
(WI-NKP-03; WI-NKP-04)
40; 50; 65; 80; 100; 125 150;
200; 250; 250 1 or 0.1

Flanged water meters / flow meters, DN40-400-IP65/68-CE – Operating Manual
Page 17 of 19
Fig. 3. Example connections for remote transmission of readings and volumetric flow measurements
13.4 Transmitter cable extension
To extend the standard cable of the transmitter module, use a shielded cable with the single core minimum
size of 0.75 mm2and a total extension line impedance not higher than 500 Ω. Note that the transmission
cable extension line must not intersect the existing power and data lines.
Note: Make the extension line as short as possible.
13.5 Example overview of the counter in an industrial flanged water meter, version NKOP (IP65), with the NK
and NO transmitter modules installed
NO transmitter
NK transmitter
Pulse module
Water/flow meter*
Ultrimis W ultrasonic
water meter
WM-BUS module
M-Bus module
External GSM
module
External WM-
BUS module
Faun
Invonic H/2
Elf 2
brown
green
white (GND)
U
S
= 5 do 24 VDC
NPN OC
l
S< 30 mA (I o= 0 mA)
Cable, LiYY 3x0.25 mm
2, L = 2 m
U
S
< 30 VDC
l
S< max 100 mA
Cable, YTLY 2x0.14 mm
2, L = 2 m
U
O
< 30 VDC
L
O= 250 mA
Cable, YTLY 4x0.14 mm
2, L = 1.45 m
Frequency band: 868 MHz
Protocol: Wirele
ss M-Bus
Power output: 10 or 20 mW
Operating voltage range: 9.2 to 50 VDC
In = 1.3 mA
Cable, YTLY 2x0.14 mm
2, L = 1.5 m
* Consult your nearest Apator Powogaz representative for the actual data communication options of WI irrigation flow meters.
green
brown
brown
yellow
white
white
white
brown
Heat meter
Heat meter
Heat meter calculator
Frequency band: 868 MHz
Protocol: Wireless M
-Bus
Power output: 10 mW
Collector data reading
Stationary data
reading
AMR
system
M-Bus/RS232
converter
GZO
GZOI
IO
US
WM-BUS
M-BUS
RTU Modbus RS485
WM-BUS
M-BUS
RTU Modbus RS485
Rs OPTO
WM-BUS
M-BUS
RS 232 (RS232B) / RS 485 (Modbus RTU/Lumbus)
LonWorks
Analogue output (4-20mA/1-10V)
pulse output
Rs OPTO
W1
W1
W2
W2
W3
W4
W1
W2
W3
W4
W1
W2
Wy1
Wy2

Flanged water meters / flow meters, DN40-400-IP65/68-CE – Operating Manual
Page 18 of 19
See the detailed installation of the NK and NO transmitters on industrial water meters and the NK transmitter
on irrigation flow meters on http://www.apator.com/pl – go to the measurement device product page of
interest and see the Download column.
14. Disposal of waste products and packaging
Dispose of waste packaging at a paper recycling collection point or in compliance with the
waste segregation requirements, using a dedicated waste paper bin.
If damaged or at the end of its life, remove the product from the system and overhaul it or
have it recycled with the component materials recovered. The product to be disposed of
must be disassembled and processed in compliance with the environmental protection
laws and regulations prevailing in the country in which the product has been marketed.
Never dispose of the product with household waste. If the packaging features plastic parts,
dispose of them in compliance with the waste plastic disposal requirements.
15. Declaration of conformity
This product was produced in compliance with all reference standards and regulations prevailing on the date
of production. The relevant declaration of conformity is appended to each delivered product.
16. Your feedback
The Operating Manuals for our products are subject to continuous updating. Your suggestions for
improvement are most welcome and will help us to optimise the Operating Manuals according to your needs.
Please communicate all your feedback about this Operating Manual to the manufacturer by e-mail at
handel.powogaz@apator.com.
View of the counter with the guard and
the IP65 flap shield (for cold water
operation)
View of the counter with an example pulse output
configuration and the IP65 guard assembly removed
(for cold water operation)
NK transmitter, two-wire
cable (version NK)
NO transmitter, three-wire
cable (version NO)
NK transmitter, two-wire
cable (version NK)
NO transmitter, three-
wire
cable (version NO)
green – output
white – common
brown – power

Flanged water meters / flow meters, DN40-400-IP65/68-CE – Operating Manual
Page 19 of 19
CAUTION!
Due to continuous development, the manufacturer has the right to modify its products in ways not reflected in
the Operating Manuals without altering the primary type characteristics. Our Spare Parts Catalogue is
available on request.
2021.011.I.EN
Apator Powogaz S.A. has the right to modify and improve its products without prior notice.
This manual suits for next models
12
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