During the Soviet Union, water could be used in unlimited quantities for a very small fee. But unfortunately, water resources are not endless and they are becoming scarcer. Today, water is becoming closer in importance to oil, which means that the accounting for its consumption is more strict. Currently, there is a federal law according to which all water consumed must be calculated using special devices. To ensure the operation of such devices or meters, there is a water metering unit.

What it is?

A water metering unit is usually considered to be a section of pipe with various components that runs from the entrance of the central water supply to an apartment or private building. With its help, a company providing water supply services controls the amount of water used by consumers at a specific facility. For consumers, installing a water meter unit allows not only to control water use, but also to save money by analyzing consumption over a certain period of time.

A water metering unit is a whole system consisting of different elements that have their own purpose. The main component of the node is the counter. No less important parts of the system are the fixing fittings with a locking mechanism, a strainer, a tap with a fixed control mechanism, expansion pipe sections in the form of pipes and other elements that perform a connecting function.

The meter shows the amount of water consumed in cubic meters. The purpose of the tap is to drain water and control the pressure in the internal network; with its help, you can check the accuracy of the readings of the installed meter and determine the location of the water leak in the internal system.

With the help of shut-off valves, the access of water to the house from the central main line is blocked. It is used when dismantling the meter or completely draining the system. A mesh filter is necessary for additional purification of water entering the internal system from impurities resulting from corrosive changes in pipes or emergency situations at a water supply plant. Flange pipes are used for installation of individual sections of the system. And the remaining connecting elements perform an auxiliary function.

Regulatory Requirements

For arranging a water metering unit it is necessary to comply with a number of requirements specially developed and adopted in the Russian Federation.

• To install a water metering unit, use a non-residential premises with a relative air humidity of 75-80% and a temperature not lower than +5? C. The location of the node system must be accessible for inspection, taking readings, replacing or dismantling the verification device. In apartment buildings and public buildings, units are most often located in central heating units, basements or specially equipped pits. For private houses, installation in a well is possible.
• Installation of the unit is impossible without preliminary preparation of the system, namely pressure testing and flushing of the pipes. Direct installation begins only after filling the system pipes with water. Pipes and other components used for assembly and subsequent installation must be firmly fixed to the surface of the floor or wall. To ensure that the water pressure does not decrease with the commissioning of the unit, it is recommended to use a minimum number of bends and fittings during the installation process.

• The design of the unit and installation of the metering device must be carried out in accordance with regulatory documents and accepted standards (SNiP, technical passport of the meter). The measuring device is always installed on a straight section and at a certain height from the floor level, as a rule, it ranges from 300-1000 mm. The length of the sections on each side of the measuring device must comply with state standards for measuring devices (SNiP).
• The installed device must have a manufacturer's passport with the date of manufacture and a state certificate. After installation, the device must be protected from unauthorized intervention by installing a seal. The sealing of the metering device with the issuance of an official permit for operation is carried out by the company providing water supply services.

• To estimate the volume of cold water, install a device marked cold water, and to calculate hot water, install a meter marked hot water. The cold water meter is subject to verification once every 6 years, and the operation of the hot water meter is checked once every 4 years.
• Verification of measuring instruments is carried out either by organizations with appropriate accreditation, or by a company providing technical maintenance of this unit, with the issuance of an appropriate conclusion. To test the measuring device, you can use special equipment that eliminates the possibility of dismantling. Typically, ultrasonic, electromagnetic and mobile testing devices are used.

Kinds

The classification of water meter units depends on the number of lines and design features of the measuring device installed on the line.

• Depending on the number of lines in the structure, and water measuring units divided into simple, consisting of one line, and complex, with an outline line. Structures with a bypass line must be installed on sites with one water inlet. This system is also provided if the installed meter is not designed to pass water in sufficient quantities for fire extinguishing systems. In order to provide water to the fire extinguishing system, a valve is additionally mounted on the bypass line, which is driven automatically by an electric drive.

• Depending on the meters used in the design, units are divided into tachometer, electromagnetic, vortex and ultrasonic. The tachometer meter is one of the most common and typical metering devices installed directly in pipes whose diameter does not exceed 400 mm. Water flow is measured due to the rotation of the working fluid driven by the flow. The higher the rotation speed, the greater the volumetric flow of water. The division of tachometer metering devices depends on the internal device.

Today there are: vane, turbine and combined meters.

• For buildings with a small volume of water consumed, where the diameter of the pipes is in the range of 15-40 mm, install vane sectional water meters. These meters are mounted exclusively on horizontal sections, the connecting elements of which are connected to each other using threads. This installation is related to their internal structure. For a more accurate measurement of the consumed volume of water, the axis of the device must be in a perpendicular position with respect to the liquid flow. Meters for hot water can withstand temperatures up to +150 degrees, and those used in cold water supply units can withstand temperatures of no more than +40 degrees.

• Turbine meters unlike winged ones, they can be mounted not only in a horizontal, but also in a vertical position. In this case, the water flow is parallel to the axis of rotation. The vertical position of the device is possible if the incoming water is of an ascending type. Water metering units with a turbine-type meter are installed in buildings with high water consumption, where pipes have a diameter of 50-250 mm.
• In combined instruments metering contains elements of a vane and turbine meter. Such designs are indispensable if the building experiences uneven consumption of water resources, and there are also sharp fluctuations in consumption.

The method of supplying water to the device allows tachometer meters to be divided into single-jet and multi-jet types. The flow of water passing through the mechanism of a single-jet meter causes a spring to rotate around the impeller. To set the impeller in motion, the water flow in multi-jet meters is first divided into small streams and only then hits the blades. Multi-jet types are among the most accurate metering devices of this class.

To measure large volumes of water consumed, large enterprises install electromagnetic metering devices. Their work is based on the analysis of changes in the magnetic field created inside the meter by the flow of water. Electromagnetic models of water meters are high-precision measuring instruments that can withstand any pressure inside the system, giving accurate indicators of water consumption over a certain period of time. By connecting to a laptop computer, you can create a flow chart for different periods over time.

The operation of vortex counters is based on the analysis of the speed and intensity of vortices, measured by a piezoelectric element located inside the device. In ultrasonic devices, water flow is taken into account by analyzing the displacements of the ultrasonic wave created by the water flow. The wave propagation interval is recorded using a piezoelectric receiver. Ultrasonic devices are used in units where it is impossible to install electromagnetic meters due to impurities in the water, in particular, to calculate the volume of wastewater. To capture impurities, a DN 100 mesh filter is most often used; using filters with a smaller cross-section can lead to a drop in pressure.

Device

The design of a water metering unit is a diagram on which the location of all constituent elements and connections is drawn in detail. There are different layouts of water metering units. But the sequence for any scheme should remain the same: first there is a shut-off device (valve, tap), then a section of pipe with a filter, and only then a metering device. When installing meters, certain requirements must be met. The length of the straight connecting elements emanating from the device in both directions must correspond to the value specified in the document for the specific meter model. Similar requirements apply to the diameters of sections and the nominal bore of the device; they must correspond to each other.

The length of the straight connecting elements is formed by fittings with union nuts included in the kit with the meter. If they provide the length specified in the device passport, and the nominal diameter of the meter corresponds to the diameter of the straight sections, then there is no need to install a transition element. If there is a discrepancy in length, but the diameters are the same, then an extended fitting with union nuts is installed. If the diameter does not match, a transition element is installed.

To increase the length in straight sections in case of discrepancy with the declared value, connecting couplings and bends (straight or angular) are used, and in case of discrepancy in diameters, a transition element is used. Combined installation of additional elements is also allowed. The squeegee can be installed between the filter device and the meter or between the shut-off device and the filter device.

The scheme also provides for the presence of tanks, circulation systems, and in case of difficulty draining water, a second shut-off device is allowed, installed after the metering device. Additionally, a drain valve or plug is included in the unit diagram if it is planned to drain water directly from the unit and control the water pressure at the outlet of the device. To control pressure, a regulator located between the shutter device and the meter can be included in the circuit. It is turned on if ball valves, gate and rotary devices cannot provide smooth flow control, to protect the meter from water hammer, and also if it is necessary to periodically reduce the pressure to the optimal value.

Projects of metering units are carried out in accordance with the requirements of clause 7.2 of SP 30.13330.2016 "Internal water supply and sewerage of buildings."
For buildings under construction, reconstruction and major repairs, water metering units corresponding to metrological class B (horizontal installation) should be provided. When placing residential cold and hot water meters on vertical sections of pipelines, meters of metrological class A are used.
Meters are placed in a room with artificial or natural light and an air temperature of at least 5°C, providing access for reading readings and maintenance.
On each side of the meter (pos. 5) provision is made for installing shut-off valves (pos. 1, 2) to turn off the water while checking or replacing the water meter. It is allowed to install household (apartment) meters with the installation of one disconnecting device in front of the metering unit.
To protect against contamination, a mechanical or magnetic-mechanical filter (item 4) is installed before the meter (in the direction of water flow).
If it is necessary to control the pressure in the water supply system, use a pressure gauge (item 7)

You can find out the cost of developing a water metering unit project by referring to the relevant sections of our website.

Standards for the design and installation of water metering units

In case of repair or replacement of the meter, water is drained through a tap (item 6).
The bypass line of water metering units in cold water supply systems is designed to pass fire-fighting water flow and (or) water supply for household and drinking needs during the period of verification of the water meter. The rest of the time, the valve on the bypass line (item 3) is sealed in the closed state.
When combining fire-fighting and domestic drinking water supply, the shut-off device on the bypass line should be equipped with an electric drive with start-up from buttons installed at fire hydrants or from fire-fighting automatic devices (systems). If the water pressure in the water supply network of a building or structure is insufficient for fire extinguishing, the shut-off device on the bypass line must be opened simultaneously with the start of the fire pumps.

The nominal diameter of the water meter is selected based on the average hourly water consumption for the period of consumption (day, shift), which should not exceed the operating consumption according to the passport.
The selected flow meter should be checked:
- to skip the calculated maximum hourly or maximum second water flow;
- the ability to measure the estimated minimum hourly water flow rates.
If simultaneous fulfillment of these conditions is impossible, install a combined water meter (with a built-in water flow switching valve) or a meter of metrological class C.

Calculation of water meters, selection of flow meters

The procedure for installing a water meter in a non-residential premises or building

To commission a newly installed water metering unit, you must:
- Submit an application to the Subscriber Relations Center for the issuance of technical specifications for the design of a metering unit;
- In accordance with the received technical specifications, develop design documentation for the water metering unit;
- In accordance with the project developed on the basis of technical specifications. conditions, install the metering unit;
- To make commercial payments according to the meter readings, you must submit an Application for admission of the water metering unit to operation to the Subscriber Relations Center.

Payments for received water and disposed wastewater, according to the Russian Ministry of Energy, are increasing every year. Therefore, for many enterprises, the task of organizing commercial accounting of water and wastewater is becoming increasingly important.

In 2013, for organizations related to water supply, sewerage, water treatment and wastewater treatment, the government of the Russian Federation determined the procedure for commercial accounting by approving the “Rules for organizing commercial accounting of water and wastewater.”

Organization of commercial accounting of water and wastewater

Commercial water metering involves the calculation of payment for transported water, which is received or supplied under water supply contracts.

Commercial wastewater metering- this is the control of water that was discharged or collected under agreements concluded with organizations working in the field of water supply or sanitation.

The organization of commercial metering of water and wastewater in the part that is not regulated by the housing legislation of the Russian Federation is regulated by the “Rules for the organization of commercial metering of water and wastewater”, approved by Decree of the Government of the Russian Federation of September 4, 2013 No. 776 “On approval of the Rules for the organization of commercial metering of water, Wastewater".

According to these Rules, subscribers or organizations operating water supply or sewerage networks and providing services for transporting water or wastewater are required to maintain commercial records. Except for cases where the terms of water supply contracts or water transportation contracts provide otherwise.

The same Rules stipulate that the organization of commercial accounting of water and wastewater must comply with the requirements of the legislation to ensure the uniformity of measurements.

Requirements for measuring instruments and methods are approved by Federal Law No. 102-FZ dated June 26, 208 “On ensuring the uniformity of measurements.”

Measuring instruments that have been verified in accordance with the provisions of this Federal Law are allowed for use. When approving the type of measuring instruments, accuracy indicators, the interval between verifications of measuring instruments, as well as the verification methodology for this type of measuring instruments are established. Art. 9. clause 1, art. 12. Clause 1 102-FZ

Commercial metering of water and wastewater using metering devices

Commercial accounting of water and wastewater must be carried out using metering devices, on the basis of which the following are monitored:

• information on meter readings as of the 1st day of the month following the billing month;
• information about current meter readings.

At the same time, commercial accounting using metering devices provides for the possibility of using telematic systems.

If the technical characteristics of the metering devices used allow the use of telemetric systems for transmitting meter readings and there is financial and technical support for the installation of telemetric modules and telemetric software, the presentation (taking) of meter readings is carried out remotely using such telemetric systems. Rules for organizing commercial accounting of water and wastewater, clause 10

However, the use of telematic systems does not exclude the fact that subscribers or transit organizations are required to allow representatives of organizations providing water supply or wastewater disposal to metering devices to verify readings and verify compliance with the operating conditions of the devices.

If discrepancies are identified between the provided data and actual consumption, a reconciliation report of meter readings is drawn up. Such an act is the basis for recalculation.

In the event of a discrepancy between the readings of metering devices discovered during the reconciliation process and the information provided by the subscriber or transit organization, in the manner prescribed by the Rules, the organization providing water supply draws up a reconciliation report of the readings of metering devices. Rules for organizing commercial accounting of water and wastewater, clause 12

According to the same Rules, it is possible to use control metering devices. Installing a parallel meter allows you to check the readings with the water meter on the side of the resource organization, and in case of discrepancies, promptly request an extraordinary verification of their water meter.

Commercial water metering by calculation method

The “Rules for organizing commercial accounting of water and wastewater” stipulate that commercial accounting can also be carried out using a calculation method. This means that for the calculation, it is not the data from metering devices that is used, but special calculation methods approved by the Rules.

The calculation method is applicable in cases provided for by Federal Law dated December 7, 2011 No. 416-FZ “On Water Supply and Wastewater Disposal”:

• in the absence of a metering device;
• in case of malfunction of the metering device;
• in case of violation of the deadlines for submitting testimony within 6 months, with the exception of cases of prior notification by the subscriber of a temporary cessation of water consumption.

The provisions of the “Rules for organizing commercial accounting of water and wastewater” contain the following calculation methods:

• method of guaranteed water supply volume;
• method of accounting for the capacity of devices and structures used for connection to centralized water supply systems;
• method of calculated average monthly (average daily, average hourly) amount of supplied (transported) water;
• method of summing up water volumes.

The rules also determine when and what method to use.

Guaranteed water supply method

Calculation using the guaranteed volume of water supply method assumes that the supplied volume is predetermined by water supply contracts. This method is used in the following cases:

• if the subscriber does not have a water meter;
• if the actual period of operation of the metering device from the date of approval for its operation until its failure was less than 60 calendar days.

Method of accounting for the capacity of devices and structures

When using the throughput method, the calculation assumes that the speed of water movement is 1.2 meters per second per full cross-section in water receiving devices operating around the clock. In this case, the volume of wastewater is considered equal to the volume that was sent to the subscriber, taking into account surface wastewater, if the water supply and sanitation scheme, or the contract, provides for their reception.

This method is used in the following cases:

• in the absence of metering devices approved for operation within 60 days after receiving notification from the resource organization about the need for installation;
• if meter readings are not provided for 6 months, not counting cases where the subscriber has previously notified the resource organization of a temporary cessation of consumption;
• 60 days from the date of malfunction of the metering device or dismantling of the metering device.

Method for calculating average monthly, average daily and average hourly amount of water supplied

The method of calculating the amount of water supplied is applied based on meter readings for the last year. In this case, if the meter has been operating for less than 1 year, data for the actual period of its operation is taken into account.

This method is used in cases where the meter is faulty or is dismantled for verification, repair or replacement, but no more than within 60 days after such a fact has been established.

Water volume summing method

The method of summing up water volumes consists of determining, based on meter readings or by calculation, the volume of water supplied to subscribers or other transit organizations.

The method is used if the transit organization does not have water metering devices, as well as if the meter is faulty or dismantled for the purpose of checking, repairing or replacing it.

Commercial accounting of wastewater by calculation method

In cases where the metering device is faulty or missing, as well as if the deadlines for providing readings on it are violated within 6 months, commercial wastewater metering is carried out using a calculation method.

With the calculation method, the volume of discharged wastewater is considered equal to the volume of water that was supplied from all water supply sources.

If the subscriber does not have a metering device or a malfunction of the metering device (including when dismantling the metering device in connection with its verification, repair or replacement), violation of the deadlines for submitting meter readings, the volume of wastewater discharged by the subscriber is taken equal to the volume of water supplied to this subscriber from all water sources.

If the water supply scheme or water disposal agreement provides for the reception of surface wastewater, then such water, in the absence of metering devices, is also taken into account by calculation in accordance with the methodological instructions set out in clause 25 of the Rules.

Commercial accounting of surface wastewater is carried out by calculation in accordance with the methodological instructions for calculating the volume of accepted (discharged) surface wastewater, approved by the Ministry of Construction and Housing and Communal Services of the Russian Federation. Rules for organizing commercial accounting of water and wastewater, clause 23

The calculation method is also applicable for unauthorized connection or use of a centralized drainage system. At the same time, the “Rules for organizing commercial accounting of water and wastewater” provide for calculations using this method only for the period of time during which the unauthorized connection or use lasted, but not more than 3 years.

If the transit organization does not have a meter, or in cases of its malfunction or dismantling, the volume of wastewater is determined by calculation by summing the volume that was discharged by subscribers and the volume of surface wastewater received by the transit organization.

Features of commercial metering of hot water (coolant)

Commercial metering of coolant is carried out on the basis of Decree of the Government of the Russian Federation dated November 18, 2013 No. 1034 “On commercial metering of thermal energy and coolant.” The resolution provides that commercial metering of coolant can be organized by both heat supply organizations and heat consumers.

Commercial metering of coolant is carried out using metering devices. At the same time, the Decree “On commercial metering of thermal energy and coolant” allows the installation of devices at the metering station to control the supply and consumption of coolant.

The heat supply organization, the heating network organization and the consumer have the right to install additional devices at the metering station to control the supply and consumption of heat energy and coolant, including for remote readings from the heat meter, which do not interfere with the commercial metering of heat energy and coolant and do not affect accuracy and quality of measurements;

If remote reading equipment is installed at the metering station, the heat supply (heating network) organization and the consumer have the right to gain access to the specified system in the manner and on the terms determined by the contract. RF PP dated November 18, 2013 No. 1034 “On commercial metering of thermal energy and coolant”

The organization of commercial metering of coolant also includes the procedure for regularly taking readings from metering devices.

In accordance with the Decree “On commercial metering of thermal energy and coolant,” if the technical characteristics of metering units allow the use of telemetric systems, then the installation of ASKUV - automated systems for commercial metering of water, transmitting readings remotely.

If the technical characteristics of metering units allow the use of telemetric systems for transmitting meter readings and there is financial and technical support for the installation of telemetric modules and telemetric software, the presentation (taking) of meter readings is carried out remotely using such telemetric systems. RF PP dated November 18, 2013 No. 1034 “On commercial metering of thermal energy and coolant”

It is assumed that heat meters equipped with standard industrial protocols can be equipped with additional devices that allow remote data collection in automatic mode.

Features of commercial accounting of surface wastewater

Surface wastewater- type of wastewater discharged from the territories of residential buildings, construction sites and industrial areas, resulting from precipitation, snow melting, watering of territories, etc.

Features of commercial metering of surface wastewater are determined by the “Rules for cold water supply and sanitation”, approved by Decree of the Government of the Russian Federation dated July 29, 2013 No. 644. According to these Rules, the subscriber is obliged to ensure metering of surface wastewater by installing a metering device.

The subscriber is obliged to install cold water and wastewater metering devices at the boundary of operational responsibility, the balance of the water supply and sewerage networks of the subscriber and the water supply and sewerage organization or in another place determined by the cold water supply agreement, the sewerage agreement or the unified cold water supply and sewerage agreement, within the deadlines established by the legislation of the Russian Federation on energy saving and increasing energy efficiency. Rules for cold water supply and sanitation, paragraph 35

Design of a metering unit

The metering unit is designed based on design documentation. Such documentation is prepared by specialized organizations or private designers.

Based on the development results, the project includes:

• explanatory note;
• drawing documentation.

The project also includes annexes:

• technical specifications for the design of a water metering unit, approved by the subscriber;
• program and methodology for testing the metering unit;
• in the presence of a narrowing, calculation of hydraulic losses;
• documentation for the measuring instrument;
• certificate of admission to design work.

The design of the metering unit is carried out on the basis of technical specifications. Such conditions are issued by the water supply organization. “Rules for organizing commercial accounting of water and wastewater” provide for the issuance of technical specifications within 10 working days from the date of receipt of the application for their issuance.

According to the Rules, technical specifications must contain:

• requirements for the location of the metering unit;
• requirements for the installation diagram of the metering device and other components of the metering unit;
• requirements for the technical characteristics of the metering device, including accuracy, measurement range and error level.

Approval of the metering unit for operation

“Rules for the organization of commercial metering of water and wastewater” allow the admission of a metering unit into operation by the subscribers themselves after concluding an agreement with an organization providing water supply or sanitation. To provide access, an application is generated from the subscriber.

The rules stipulate that admission is granted no later than 15 working days from the date of receipt of the application from the subscriber.

The application for admission must contain:

• details of the subscriber or transit organization, as well as contact information with the telephone number of the person from whom the application was received;
• details of contracts concluded for drainage, water transportation, etc.
• date and time at which it is possible to put the metering unit into operation.

Also attached to the application, certified by the subscriber or transit organization, are copies of:

• design documentation for the metering station equipment;
• passports for metering devices that are part of the metering unit;
• documents confirming the passage of the last verification of metering devices.

Among other things, the application must be accompanied by documents confirming the person’s right to submit an application on behalf of the subscriber or transit organization.

According to clause 39 of the Rules, when a metering unit is allowed into operation, the following is also checked:

• correspondence of serial numbers on metering devices to the numbers indicated in their passports;
• compliance of the metering unit with design and technical documentation, including the configuration and installation diagram of metering devices;
• presence of signs of the latest verification, with the exception of new metering devices;
• operability of metering devices included in the metering unit;
• operability of telemetric devices if they are included in the metering unit.

If non-compliance with the specified requirements is detected, the metering unit is not allowed to operate.

When a metering device is installed by an organization providing water supply, admission to operation of the metering unit is carried out in the manner prescribed by clause 46 of the “Rules for organizing commercial metering of water and wastewater”:

The water supply organization sends the subscriber a notice of the date and time of the admission procedure no later than 5 working days before the day of admission, and if the subscriber’s representative fails to appear, the water supply organization carries out admission without the participation of the subscriber’s representatives with subsequent referral to his address of the Certificate of Admission. Rules for organizing commercial accounting of water and wastewater, clause 46

Metering devices are considered approved for operation from the date of receipt of the Certificate of Admission of the metering unit with a copy of the passport for the metering devices attached.

Operation of the metering unit

The metering unit is operated in accordance with its technical documentation. If the metering unit fails, the subscriber should immediately notify the organization providing water supply or sewerage.

In accordance with the “Rules for organizing commercial accounting of water and wastewater,” the organization is provided with the following information:

• readings of metering devices at the time of failure of the metering unit;
• estimated time for dismantling metering devices requiring repair (at least 2 working days).

According to the Rules, it is necessary to eliminate the existing fault within 60 days from the date of breakdown. Dismantling of metering devices for transfer for repair, as well as subsequent installation, is carried out in the presence of representatives of the organization providing water supply or sewerage.

The person operating the metering unit, in the event of failure of the metering unit, is obliged to report the readings of the metering devices at the time the metering unit fails (malfunction occurs), as well as eliminate the identified malfunction (carry out repairs) within 60 days from the date of failure of the metering unit or metering devices out of order (malfunction occurs).

The organization providing water supply and (or) sewerage must be notified of the dismantling of metering devices at least 2 working days in advance.
Dismantling of metering devices included in the metering unit or metering unit, as well as their subsequent installation, is carried out in the presence of representatives of the organization providing water supply and (or) sanitation, except for cases where such representatives did not appear by the time for dismantling the metering devices or metering unit, specified in the notice. Rules for organizing commercial accounting of water and wastewater

In accordance with the Rules, the metering unit is considered to be out of order in the following cases:

• metering devices do not display measurement results;
• control seals or verification marks are broken;
• there is mechanical damage to metering devices or other elements of the metering unit;
• the permissible error of meter readings has been exceeded;
• there are tie-ins into the pipelines that are part of the metering unit, which are not provided for in the design documentation for the equipment of the metering unit;
• there are signs of unauthorized interference in the operation of the metering unit;
• The verification period for metering devices has expired.

After repair, replacement or verification of metering devices, employees of the resource organization seal the devices.

Installation of seals on metering devices is carried out by employees of the resource organization free of charge. Collection of fees from the subscriber is possible only in cases where the sealing was repeated due to a violation of the seal or verification marks.

Reducing costs with ASKUV

Rising tariffs for energy resources lead to the need to increase the efficiency of their use. Reliable accounting of energy resources allows not only to use them rationally, but also to reduce payments for their consumption.

The main guarantee of reliable accounting is the use of telematics systems, which allow remote and timely transmission of consumption readings, as well as timely monitoring of problems in the system.

See the automated commercial accounting system "STRIZH"

In continuation of the article.

Turnkey installation services for technical metering units in apartment buildings, factories, shopping centers, apartment buildings, homeowners' associations.

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We install heating, hot water and cold water meters. Meters are installed in apartment buildings, kindergartens, schools, industrial enterprises, heat supply companies, and boiler houses. Any consumer or source of energy resources for central heating, central water supply. Metering units are installed to control utility services in housing and communal services. The main customers for the installation of general metering devices are apartment buildings, homeowners' associations, and other central heating consumers.

Installation of metering units according to the all-inclusive system. Requesting the necessary documents to the RSO, developing and project approval, installation and installation of thermal energy metering units (UUTE), commissioning, commissioning, commercial registration with a resource supply organization, warranty and service maintenance of metering devices.

Order a calculation of your metering unit!

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Types of metering units

Heating
Heat meter - 1 pc. Flow meter - 2 pcs. Temperature sensors - 2 pcs. Pressure sensors - 2 pcs.
Hot water There is a nuance: If the hot water is dead-end, then only one metering unit module is installed, this significantly reduces the cost of the DHW heat meter.
Heat meter - 1 pc. Flow meter - 1 pc. Temperature sensors - 1 pc. Pressure sensors - 1 pc.
Cold water
Computer - 1 pc. Counter - 1 pc. GSM/GPRS modem - 1 pc.

Heating- installation of communal and collective heat supply metering devices.

Of course, installing a heat consumption meter is beneficial, since the monthly amount for heating will be calculated according to current tariffs and based on the readings recorded by the collective metering device. Otherwise, the calculation is made according to the standard using a multiplying factor. In addition, residents of an apartment building have the opportunity to regulate heat energy consumption individually using the system automatic regulation.

Composition of a heating heat meter:

Heat meter - 1 pc.

Flow meter - 2 pcs.

Temperature sensors - 2 pcs.

Pressure sensors - 2 pcs.

Hot water- installation of common house and collective hot water metering devices.

What is the difference between a hot water supply metering unit and a thermal energy metering unit for heating? Fundamentally, it's the same thing. Both metering units include a heat meter with associated electronics, flow meters, temperature sensors, and pressure sensors. However, such a metering unit is usually cheaper, since you can use a flow meter on the return pipeline (circulation) of a smaller diameter, or, if agreed by the resource supply organization, use mechanical water flow meters with a pulse output. In certain cases, such a project may be agreed upon with the RSO.

There is a nuance: If the hot water is dead-end, then only one metering unit module is installed, this significantly reduces the cost of the DHW heat meter.

Composition of the dead-end hot water metering unit:

Heat meter - 1 pc.

Flow meter - 1 pc.

Temperature sensors - 1 pc.

Pressure sensors - 1 pc.

Cold water- installation of common house and collective cold water metering devices.

The devices that are included in the water metering unit can be of different quality and modifications.

1. A conventional turntable, a vane flow meter from which readings are taken in the basement - Dry-running turbine cold water meter VSKhN, designed to measure the volume of cold water according to SNiP 41-02-2003 and drinking water according to SanPiN 2.1.4.1074-01 and SNiP 41-02-2003.
2. The same vane meter with a pulse output, which can be connected to the computer and through the dispatch system, see the readings on the computer.
3. Full bore flow meters, induction microprocessor flow converters IPX5 in accordance with GOST 14254-96, GOST R 52931-2008, more accurate and durable, less likely to clog, because do not have a moving mechanism in the flow part, less hydraulic resistance. - The best option for a cold water supply unit.

Composition of the cold water metering unit + dispatching:

Computer - 1 pc.

Counter - 1 pc.

GSM/GPRS modem - 1 pc.

The procedure for installing metering units.

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• We obtain technical specifications for the installation of metering devices
• We develop a project and coordinate it with the resource supply organization
• We weld ready-made metering device modules
• we install flow meters, temperature sensors, pressure sensors at the metering unit
• we connect metering units to the heat meter
• we program devices and carry out commissioning
• we will organize the admission of the metering unit into operation
• We bring an inspector to the site and hand over the metering unit to him
• We hand over the signed “Act of admission of the metering unit into operation” to you
• from this moment the metering devices were put into operation

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The warranty on the metering unit is 2 years.

7 years for a legal entity, which means the work will be completed on time, and the guarantee will be fulfilled.

SRO certificate for design work.

SRO certificate for installation work.

Personnel approvals and certifications.

Service options:

• Training your employees in the operation of heat metering units
• Installation of service programs on your computer to control metering devices
• Network integration of several metering nodes into one control center
• Re-registration of accounting units when there is a change of owner or balance sheet holder

Our works:

Comparative cost of instrument kits

for heating metering unit:

1 Calculator + 2 flow meters + 2 DT + 2 DD

PRICE - more details about the prices of devices and the cost of work.

Frequently asked questions about metering devices:

End of form

Frequently asked questions

1. How to install a heat meter?
2. Why do you need to install thermal energy meters for hot water, and not a regular water meter?
3. How to get a subsidy for the installation of communal metering devices?
4. Is it possible to install a heat meter in an apartment?

1. HOW TO INSTALL A HEAT METER?

• First, at the general meeting of owners, it is necessary to make a decision on installing a metering unit.

Since the installed metering unit will become common property, its payment will be distributed proportionally to all owners. It is necessary to find out about the existence of subsidies for the installation of metering devices and the possibility of participating in such programs.

• Selecting a contractor.

Work should be performed only by legal entities specializing in this type of activity. The organization must have an SRO certificate for design work and an SRO certificate for construction work. Certification of welders and electricians is desirable.

Sometimes there are situations when the metering unit is installed, the money is paid for it, but the heat supply organization does not allow the metering unit to be put into operation. As a rule, this is due to the fact that the mounted unit does not comply with the design solutions, because the project is carried out by 3 persons “who have not even seen the object” - the dimensions in the project do not correspond to the actual dimensions of the pipeline sections.

Specialized companies are currently installing heat meters on a turnkey basis with their further maintenance - this is the most profitable option for the customer. Such companies quickly receive all the necessary documents from the energy supply organization and optimally organize their work, starting from obtaining technical specifications and ending with signing the act of admission to operation. They themselves bring the inspector from the RSO to the accounting center.

It is necessary to find out whether the organization has come to this market for a long time, and whether it will disappear tomorrow. The presence of an organization's website, office and production space, as well as qualified personnel indicates the serious intentions of this organization.

• Installation price.

The cost of installing a heat meter is determined based on an assessment of many factors. Such factors include: the complexity of the work and the structure itself, its configuration, the cost of metering devices. The cost of the metering unit is calculated individually for each object based on the estimate. Only after a complete inspection and approval of the project is the final cost of installing the metering unit determined.

• Obtaining technical specifications from the heat supply organization.

Technical conditions (TU) for installing a heat meter are issued by the local energy supply organization. The technical specifications indicate the main parameters of the heat supply system and additional requirements that the heat meter must meet. Based on these data, the design of the metering unit is carried out. Otherwise, it will not be possible to use readings from metering devices for commercial calculations. Specialized companies that install metering devices independently obtain technical specifications.

• Development and approval of the project.

The design of the metering unit should be carried out by an engineer who will subsequently supervise work at this facility. Such an engineer has practical knowledge of metering devices and heat supply systems, which is necessary when approving the project and approving the metering unit.

The organization must have SRO approval for design work.

• Supply of equipment and provision of materials for the facility.

According to the project, all necessary plumbing, electrical equipment and heat meters themselves of the required size and brand are purchased. Organizations specializing in the installation of metering devices, as a rule, purchase them from manufacturers without additional markup.

• Installation and commissioning.

The metering unit can be installed at any time of the year. When installing a heat meter in the cold season, it is necessary to monitor the time when the coolant is turned off to avoid freezing of the building.

After installing the devices, it is necessary to call an inspector from the heating network to check the functionality of the heat meter and compliance of the installation with the design documentation. Having made sure of compliance, the inspector seals the devices and draws up an approval certificate for the metering unit, which must be signed by a representative of the energy supply organization and the owner.

The organization must have SRO approval for construction work.

• Heat meter maintenance.

After commissioning, it is advisable to put the metering unit for service, because This is technically complex equipment that requires constant monitoring.

For installation of metering devices and their further maintenance, you can contact the ATK company.

2. WHY DO YOU NEED TO INSTALL HEAT METERING DEVICES FOR HOT WATER, AND NOT A USUAL WATER METER?

Full accounting of hot water occurs not only by volume, but also by the amount of heat. Therefore, an ordinary water meter (“spinner”), such as is installed in our apartments on cold water, is not advisable, since recording the temperature parameters of the water is necessary to account for Gcal. Consequently, it is necessary to install a thermal energy metering unit (a set of devices that takes into account several parameters) for hot water.

In some buildings, the hot water supplied from the central heating station does not reach the temperatures established by the standard. Using a heat meter, it is possible to see the actual consumption of the amount of heat and volume of hot water, and accordingly pay only for what is actually received, and also require that the water temperature be brought to normal.

3. HOW TO OBTAIN A SUBSIDY FOR INSTALLING COMMON HOUSE ACCOUNTING DEVICES?

Periodically, the state develops programs to assist in the installation of metering devices. Now you can use money from the capital repair fund to install metering units.

4. IS IT POSSIBLE TO INSTALL A HEAT METER IN AN APARTMENT?

Most of the residential buildings in Russia are buildings with vertical (riser) distribution of heat supply pipes. With this wiring model, several heating risers can pass through the apartment with separate outlets to a radiator or group of radiators.

Due to the fact that a heat meter must be installed in each of these outlets, this costs a pretty penny. Converting to another heating system, where it will be possible to use only one heat meter, is very expensive, and, as a rule, not practical from an economic point of view, since the cost of the heat metering system and its payback period in this case will exceed all reasonable limits.

Installing heat meters in a separate apartment is possible, but today, due to the high cost of heat meters, this is not profitable. Therefore, at present it is better to pay for consumed heat according to the readings of a common house heat meter installed in the heating substation, which is usually located in the basement of the building.

Or write a question to our specialists:

Our design company has developed a RD for the water metering unit of the UUV.

TECHNICAL REQUIREMENTS FOR THE DESIGN OF A METERING UNIT

for water metering equipment

1. General requirements for the project

1.1. The metering unit must meet the requirements:

Federal Law “On energy saving and increasing energy efficiency and on introducing amendments to certain legislative acts of the Russian Federation” dated November 23, 2009 N 261-FZ;

Federal Law “On Water Supply and Sanitation” dated December 7, 2011 N 416-FZ;

- “Rules for cold water supply and sanitation”;

- “Rules for organizing commercial accounting of water and wastewater”;

- “Rules for the use of public water supply and sewerage systems in the Russian Federation.”

2. Requirements for design documentation of a water metering unit

2.1. The project for the arrangement of a metering unit (installation, replacement of a metering device) for cold water, as well as their equipment, is developed by a person who has a special permit to carry out this work.

2.2. Metering units, which include mechanical metering devices, can be implemented in accordance with album drawings of typical designs of water metering units, without developing projects. The design of the water metering unit is determined by the Technical Specifications individually.

2.3. The design of a water metering unit, which includes a flow meter - the meter must contain:

2.3.1 Explanatory note:

Purpose;

Initial data: operating mode of the facility, number of inputs, range of measured flow rates, operating conditions of the device;

Justification for choosing a measuring instrument;

Technical characteristics of the equipment, including a comparative table of the technical characteristics of the device in accordance with the operating manual and the actual parameters of the measured water flow;

Calculation of instrument error over the entire range of measured flow rates;

Description of the design and functional diagram of the metering unit;

The procedure for taking readings (archives), submitting reports;

Maintenance schedule for the metering unit.

2.3.2 Drawing documentation:

Situation plan with approval by JSC Vodokanal of the installation location of the metering unit;

Schemes of functional automation, including instrumentation and automation cabinets;

Installation diagrams, with the obligatory indication on the diagram of straight sections before and after the metering device, as well as the nearest local resistances before and after the flow meter;

Electrical diagrams (power supply, connections, external wiring);

Hardware Specification.

2.4. Metering units are located on the border of the balance sheet ownership of the networks or on the border of the operational responsibility of the subscriber and JSC Vodokanal, unless otherwise provided by the water supply agreement, the unified cold water supply and sanitation agreement, or the agreement on connection (technological connection) to centralized cold water supply systems.
2.5. The location of the metering unit equipment is determined by the project. The location of the metering unit equipment must ensure full metering of water consumed at the facility (as a rule, it is installed at the entrance to the building).

2.6. For all metering units, it is allowed to use components made from materials approved for contact with drinking water.

2.7. Technical and design documentation must be agreed upon with the services of JSC Vodokanal before the installation of the unit begins.

3. Requirements for metering station equipment

3.1. Provide as part of the metering unit:

Water meter with pulse flow sensor;

Filter according to the diameter of the supply pipeline;

Three pressure gauges (before the filter, after the filter, after the water meter);

Drain valve after the water meter (outside the straight section);

Tap for water sampling;

Flow recorder for remote reading and monitoring of meter operation.

3.2. All connections of water fittings are allowed only after the water metering unit.

3.3. Acceptance of the metering unit for operation is carried out with the participation of representatives of JSC Vodokanal with the preparation of the corresponding act.

4. Requirements for metering devices

4.1. Metering devices that correspond to the approved types of measuring instruments permitted for use in the Russian Federation are allowed for installation.

4.2. The metering device must be marked with the name, manufacturer's trademark, metrological class, nominal flow rate in m3/hour, year of manufacture, serial number.

4.3. At the time of installation, the metering device must be verified and sealed by an organization that has the appropriate permit.

4.4. The metering device must be used within the current verification period specified in the original passport of the metering device and on the verification stamp of the seal installed on the body of the metering device. Installation and operation of a meter that does not have a seal, or if the seal is damaged, is not permitted.

4.5. The metering device must be mounted in a place that is easily accessible for taking readings (without using a mirror or ladder), installation, and maintenance.

4.6. The metering device is installed in accordance with the installation requirements (according to the metering device passport).

4.7. The design of the metering device must prevent unauthorized interference in its operation without dismantling the equipment. To exclude the influence of an external magnetic field, metering devices must have antimagnetic protection of the counting mechanism.

4.8. The limits of permissible relative error of water meters should not exceed:

± 5% in the flow range from Qmin to Qt (excluding);

±2% in the flow range from Qt to Qmax (including).

(Qmin - lowest water consumption, m3/h; Qt - transition water consumption, m3/h; Qmax - highest water consumption, m3/h)

4.9. The metering device must have a flow recorder that measures the parameters of the flow meter, a leading electronic archive of values ​​​​of the hourly, daily, monthly costs of the consumed resource.
4.10. The flow recorder must have:

Possibility of remote data transfer (via cellular communication channels GPRS; GSM/Ethernet);

Possibility of dividing interfaces for parallel dispatching;

Protection against intentional measurement of archival data and metrological parameters;

Built-in control unit for the transmitting device, which allows you to initialize the modem and maintain a communication channel with the data collection center of the resource supplying organization;

The ability to display on the screen of the secondary converter the flow rate in m3/h, volume in m3, the presence of emergency situations and failures, including operating time;

Availability of protection against unauthorized interference in the operation of the flow meter;

Degree of protection according to GOST 14254-96 “Degrees of protection provided by enclosures (IP code)”. IP 65 for installation indoors, IP 68 for installation in flooded chambers/wells, underground;

Possibility of creating archives (hourly with a depth of at least 1450 hours, daily with a depth of at least 730 days, monthly with a depth of at least 48 months) of readings and emergency situations or operating time (the use of certified archivers complete with a metering device is allowed);

Possibility of transmitting current, archived readings of water consumption and quantity and messages about emergency situations using a data collection and transmission device;

Availability of output signals for communication with external devices - digital output RS 232 or RS 485 (ModBus RTU and/or M-Bus protocols).

5. Requirements for operating the metering unit

5.1. Acceptance of the metering unit for operation is carried out with the participation of representatives of JSC Vodokanal with the preparation of the corresponding act. The operating conditions of drinking water metering units must correspond to the operating conditions of the metering device included in the unit. The operating conditions of the metering device are specified in its technical documentation.

5.2. Admission to operation of metering devices is carried out based on the results of an inspection of the metering unit by representatives of JSC Vodokanal for compliance with technical specifications (including appendices to them) and sealing of metering devices, about which a report is drawn up, signed by representatives of JSC Vodokanal and the Subscriber. If there are connecting devices (bends, control valves) on the pipeline section to the metering device, the shut-off devices on them must be sealed in a closed state by representatives of Vodokanal OJSC.

5.3. When operating metering devices, do not allow:

expiration of inter-verification periods of operation of metering devices established in the passport documentation for metering devices;

Breaking the seals installed on metering devices.

6. Requirements for the premises of the metering station

6.1. The water meter must be installed in a room with artificial lighting with an air temperature not lower than + 5°C and not higher than + 50°C. The room must be protected from moisture. If the meter is installed in a well, the well must be protected from flooding. If necessary, provide for repairs to the premises (well) and waterproofing.

• The metering unit must be installed in a place protected from unauthorized entry and providing employees of JSC Vodokanal with year-round access (to monitor the functioning, operation, maintenance and reading of metering devices).　
• The installation location of metering devices must ensure its operation without possible mechanical damage. It is not allowed to install metering devices close to devices that create a powerful magnetic field around them. Grounding equipment is required around the perimeter of the room.　

Additional requirements for the metering unit　

1. A power supply must be provided to the metering device.　
2. A check valve should be installed between the water meter and the second shut-off and control valve according to water movement.　
3. The condition of the valves at the entrance to the building, inside the metering unit premises, must provide protection against water penetration and the possibility of stopping the water supply for the purposes of installing the metering device and its removal. If necessary, replace the valves.　
4. The cold and hot water supply pipeline system in the metering unit must provide protection from possible leaks and breaks for the entire period of operation until the next period of verification of metering devices; if necessary, provide for replacement of pipelines.　
5. In the cases specified in SNiP 2.04.01-85, provide equipment for bypass line pipelines. Install shut-off and control valves with an electric drive on the bypass pipelines. The shut-off and control valves must be opened automatically by the fire extinguishing device. If the metering unit contains shut-off and control valves on the bypass line, provide for the possibility of sealing it.　
1. Recommendations　

Measuring automated system for monitoring and accounting of energy resources (IASKUE) "Pulsar" - designed for automated commercial and technological metering of the consumption of cold and hot water, gas, electricity, thermal energy.