Apator Powogaz SV-RTK User manual

Volumetric Water Meters DN15 to DN40
SV-RTK
Instruction manual

SV-RTK - Instruction manual
Page 2 of 10
Contents
1. The subject of the instruction......................................................................................3
2. Technical data –standards and regulations ..............................................................3
3. Description of proper water meter operation ............................................................4
4. Choosing the right water meter size ..........................................................................4
5. Testing at the receipt...................................................................................................5
6. Conditions of correct installation of a water meter..................................................5
7. Filling with water and start-up of a water meter.......................................................6
8. Maintenance, inspection and repairs ........................................................................6
9. Storage and transport.................................................................................................7
10. Malfunctions and removing them..............................................................................7
11. Safety requirements and environmental aspects....................................................7
12. Value of water meter pulse ........................................................................................8
13. What to do with used product packages..................................................................8
14. User's evaluation........................................................................................................8
Warning!.....................................................................................................................9

SV-RTK - Instruction manual
Page 3 of 10
Congratulations on choosing our product. Below we present the operating instruction of the volumetric water
meters with threaded connectors DN15 to DN40, manufactured by Apator Powogaz S.A., according to the
procedures of its quality system. Please, read the instruction thoroughly before installing the meter in order
to ensure usage according to its intended use.
1.The subject of the instruction
This instruction defines the criteria of correct choice, the conditions of correct installation, operation and
maintenance as well as the rules regarding safety, environment protection and disposal of threaded
volumetric water meters designed for measurement of volume of potable water used for domestic, business
and small industrial purposes which flows in closed circuits (pipelines).
Table 1. Types of Water Meters and Their Intended Uses
Water Meter Type
Use
SV-RTK
standard version
Cold water min 0.1°C - max 30°C
Operating pressure max 1.6 MPa (16 bar)
IP65 counter
Counter adapted to a reed switch transmitter
Table 2. Types of Water Meters and Their Intended Uses
Water Meter Type
Installation Orientation
Counter Location
Horizontal
Vertical
Diagonal
SV-RTK
standard version
OK
OK
OK
Table 3. Continuous Flow Rate
Water Meter Type
SV-RTK
standard version
Size / Nominal Diameter (mm)
Continuous flow rate Q3 (m3/h)
15
2,5
20
4,0
25
6,3
32
10
40
16
2.Technical data –standards and regulations
Technical data is included in the specification sheets for each type of water meter. Water meters comply with
the following standards and regulations:

SV-RTK - Instruction manual
Page 4 of 10
▪Directive 2004/22/EC of the European Parliament and the European Council of 31 March 2004
(Measuring Instruments Directive –MID)
▪EN 14154 standards harmonised with directive 2004/22/EC of the European Parliament and the
European Council of 31 March 2004
▪ISO 4064 –Measurement of water flow in conduits. Water meters for cold potable water
▪OIML R49 –Water meters intended for the metering of cold potable water and hot water
The basic requirements regarding the installation of water meters can be found in standards:
▪EN 14154-2: Installation and operating conditions
3.Description of proper water meter operation
The volumetric water meters type SV-RTK are designed to measure, memorise and display the volume at
metering conditions of water passing through the measurement transducer in the sense of the Directive
2004/22/EC of the European parliament and the European Council of 31 March 2004, as amended.
The water meters type SV-RTK are positive displacement meters with rotary piston.
The water meters type SV-RTK consist of a brass casted body with connecting threads and inlet strainer, a
wet measuring unit, a pressure plate, an o-ring, a gasket, a screwed plate a dry mechanical indicating device
(standard counter) and clamp on plastic cover.
The measuring unit consists of an internal strainer, a piston chamber with plastic shaft with stainless steel
holder, a bush, a plate, a piston with stainless steel shaft, a piston chamber cover, an o-ring, a transmission
shaft with magnetic holder.
The mechanical indicating device, dry (standard counter), are formed by numbered rollers with eight drums
and one rotary pointer. There is star wheel with six arms which can be used for rapid testing in mechanical
indicating device.
4.Choosing the right water meter size
The main criterion for choosing the right water meter size (nominal diameter) should always be the water
meter working conditions, that is the average and maximum value of a passing water working flow.
When a water meter is too large, it does not only increase the investment cost, but also has lower accuracy
in cases of small water flow.
A too small water meter can cause its overload, and simultaneously quicken the wear of its active parts.
In order to ensure that the water meter works within its measurement range and the acceptable accuracy
error ranges, you have to specify the scope of its work during the day, or define this scope based on the
monthly water consumption, taking into account the minimum and maximum values of flow rate.
It is recommended to choose the size of the water meter so that the size of the largest expected flow rate in
the system is between 0.5 and 0.7 of the water meter constant flow rate Q3.
Values of constant flow rate Q3 for a given type of water meter were provided in table 3. Using the correct
type of water meter depends also on the temperature, water pressure, water meter conditions of installation

SV-RTK - Instruction manual
Page 5 of 10
to the pipeline, as well as the need to transmit indications and the flow rate measurements. When choosing a
water meter the pressure loss caused by the installation is important as well.
5.Testing at the receipt
The water meter supplied by the manufacturer should be checked for possible external damage which
occurred during transport, especially the body and its threads and the counter cover, as well as the
transmitter cable (in the case of supply with pulse transmitter). Also check the labelling of the water meter.
The following markings are located on the counter disc, plaque or body of the water meter:
▪name and marking of a manufacturer
▪mark of test type according to MID
▪manufacturer's mark of type
▪water meter number
▪metrologic marking consists of an upper-case M and two last digits of the water meter year of
production when the marking was placed on the measurement instrument
▪flow direction, as an arrow
▪flow rate value Q3 per m3/h
▪marking of measurement unit in m3(on the counter dial)
▪value of the maximum pressure loss ΔP
▪value of the upper pressure limit: MAP16
6.Conditions of correct installation of a water meter
Place of installation for water meters should be easily accessible for installation, deinstallation and operation,
reading indications, separated from utility and industrial rooms. Protected from negative atmospheric
conditions and protected from the influence of electrical and gas installations. In case there is no such place,
the water meter may be installed in the water meter well, and additionally the water meter and its equipment
should be installed far enough from the well bottom. The well should be fitted with a settling pond or a water
outlet.
In the location of installation, the water meter cannot be at risk of being hit or be subjected to vibrations
caused by other devices in the vicinity, or subjected to high ambient air temperature, contamination, flooding
and corrosive action of the surroundings. Temperature in the installation location should not be lower than
4°C. The water meter should be protected from influence of such hydraulic phenomena such as cavitation or
hydrodynamic water hammering.
Before, and after the water meter, provide the valves in order to cut off the water supply if there is need for
deinstallation or repair. Use valves which can entirely reveal the cross-section of a water pipe.
In case of expected water contamination during the time of operation install a filter or a settling tank between
a valve and a straight pipe section and before the water meter.
For an installation of a water meter which does not cause strain in the body it is recommended to use
compensative connectors installed at the output, which enable for the length reduction by extending the
telescopic connector sleeve.

SV-RTK - Instruction manual
Page 6 of 10
The pipe in the installation location should be shaped so that there is no possibility for an air pocket to be
created in the water meter. Water meter has to be entirely filled with water.
Water meter should not be under risk of excessive strain caused by pipelines and equipment. If necessary,
install it on a pedestal or in a grip. What is more, the pipes connecting on the inlet and outlet side should be
adequately fastened, so that no part of the system is dislocated by the water when the water meter is
deinstalled or disconnected from one side.
During installing a meter in the water network, observe the correct water meter orientation according to the
design: for horizontal, vertical and diagonal operation (Table 2).
Volumetric water meters according to table 3, with or without non-return valve, work without the need to take
into account straight sections before (U0) and after the water meter (D0).
Pipe sections before and after the water meter should be coaxial. Gaskets should be placed concentrical in
relation to the pipe. Eccentric installation of a water meter in a pipe is not permitted, in particular the
dislocation of gaskets between the water meter and the pipe so that they cover a part of the free pipe cross-
section at the water meter and interrupt the flow.
Water flow through the water meter should correspond to the direction of arrows placed on both sides of the
body.
Water meters are appropriate for threaded installation. Threads are made according to the standard ISO
228-1.
7.Filling with water and start-up of a water meter
Before installing the water meter, the pipeline should be flushed in order to remove contamination, and the
filter (if it is used) should be cleaned. During flushing, use a spigot to replace the water meter.
Before installation, check the operation of a water meter by starting a rotating motion of a rotor while
observing the rotation or the rotation of the counter indicators. Check the lead seal condition.
Before installing the water meter, water should be supplied freely to the pipeline, with the vents open so that
the air that leaves the system does not cause excessive water meter rotations, which causes the device
damage.
During operation, the valves before and after the water meter should be entirely open.
After performing all the actions related to the start-up, check the water meter operation by observing the
increase of the counter indication.
During operation, check whether the actual operating conditions correspond to the water meter intended use,
in particular in terms of permitted pressure, temperature and flow.
8.Maintenance, inspection and repairs
Water meter is an instrument which measurement capacity changes over time. Moreover, the deterioration of
this capacity is generally a result of aggressive water influence, that is why, after some time it should be
deinstalled from the network, inspected or repaired.

SV-RTK - Instruction manual
Page 7 of 10
Expiry dates of the compliance assessments are specified in the metrologic regulations. After deinstallation
of the water meter from the mains, it is recommended to thoroughly check its indication accuracy for the
purpose of comparison, and only after this is done, start the disassembly and cleaning. Do not use cleaning
chemicals which have harmful influence on the materials from which the water meter elements are made of.
It is unacceptable to use for cleaning any chemical reagents which cause corrosion of materials or which are
solutions, particularly for plastics, or which cause accelerated ageing of gaskets.
Repairs should be performed in specially prepared water meter repair stations, or in service plants.
When the repair necessitates replacement of parts, use only original spare parts supplied by Apator
Powogaz S.A. After the repair, the water meters are checked according to the current regulations.
9.Storage and transport
Water meters received from deliveries or deinstalled from the mains should be stored with counter face up or
on the side, in a closed room free from caustic, stinking vapours etc. which have a destructive effect on the
water meter condition. The room temperature should be between 5°C and 50°C, and air relative humidity no
more than 90%. Both during transport and storage, the water meter should be protected from vibrations and
in particular from shock which may cause damage of body or internal elements. The transport should take
place with covered means of transport in manufacturer's packaging or a substitutive package which entirely
protects the product from damage.
10. Malfunctions and removing them
If the counter does not indicate anything as the water flows, check whether the inlet sieve is not jammed by
dirt. If the water meter does not work after cleaning and in any other case it is not working, give it to be
repaired. Remember to share your observations. If the pulse transmitter is not working, notify the supplier. If
after the consultation with the supplier the fault cannot be removed, the water meter should be left at a
service.
11. Safety requirements and environmental aspects
The water meter is a measurement device which is safe to use if installation and operation requirements
adequate for the intended use are observed.
During installation, handling and operation there may be risks relating to the water meter itself:
▪Mechanical threats:
□If carried improperly, it may fall
□Water leaks and flooding due to installation of the product which does not agree with installation
requirements or excessive water pressure
▪Thermal threats:
□Scalding due to contact with the used water meter
In order to install and use the water meter, choose an easily accessible place.

SV-RTK - Instruction manual
Page 8 of 10
Water meter components do not contain substances harmful for health and the environment. All water
meters are hygienically approved for potable water contact.
Counter seals (IP65) and other design solutions protect the water meter from negative influence of steam
condensation on correct reading of indication or transmitter operation.
Classification of environmental requirements according to EN 14154-3+A1:
▪Classification of mechanical environmental requirements - class M1
▪Classification of climatic and mechanical environmental requirements - class B
▪Classification of environmental electromagnetic requirements - class E1
12. Value of water meter pulse
The value of water meter pulse for a pulse transmitter is defined in Table 4.
In order to extend the standard transmitter cable, use a cable with a single conductor diameter of at least
0.75 mm2, taking into account the recommendation, that the total impedance of the extended section should
not be higher than 500 Ohm. See to it that the extended cable does not cross with the existing layout of
power supply or automatic control cables. Warning: use the shortest possible extension.
Table 4. Value of Water Meter Pulse
Water Meter Type
SV-RTK
standard version
Size (mm)
Pulse value (L)
15
1
20
1
25
1
32
1
40
10
13. What to do with used product packages
The package is made of recyclable corrugated board. You can dispose of it in every waste paper purchase
point. Additional information regarding the re-cycling of particular materials water meters are built of as well
as proper disposal methods can be obtained in relevant company departments.
14. User's evaluation
The operating instructions are constantly updated. You can help us optimize the operating instruction to
better suit the users' needs by sending us your suggestions. Please, send all the remarks regarding the
operating instruction as well as the use of flow transducers to the manufacturer's address.

SV-RTK - Instruction manual
Page 9 of 10
Warning!
Within the range of the technological progress, the manufacturer reserves the right to introduce changes to
the manufactured products without marking them in the operating instruction as long as the main features of
the product are preserved. We send a spare parts catalogue upon the client's request.

SV-RTK - Instruction manual
Page 10 of 10
Apator Powogaz S.A.
ul. Klemensa Janickiego 23/25, 60-542 Poznań
tel. [phone]
fax [phone]
e-mail [email protected]
www.apator.com
2020.046.I.EN