Water meter with pulse output. Water meter with pulse output: device and principle of operation

Price utilities has increased significantly, so many consumers began to think about ways to save and save their family budget. Pulse water meters will help calculate the costs of hot and cold water and significantly save your family budget. Often we get something completely different from what we are promised and for which we pay a lot of money, instead hot water slightly warm, and cold served with little pressure.

The hot water supply is unstable, and its heat does not meet the standards. Thanks to pulse meters, you can control the supply of hot and cold water and accordingly reduce financial costs.

How to choose a good water meter

Before going to the store, you should clarify which device you need, since the quality and duration of its operation depends on this. To view the most popular water meters, you can familiarize yourself with State Register measuring instruments, where measuring devices corresponding to GOST R 50601 and GOST R 50193 are indicated. Also, when purchasing a water meter, other factors should be taken into account, such as:

• Will cold or hot water flow through the meter?;
• degree of contamination or hardness of water;
• what cost do you expect?;
• how much energy can the measuring device consume?;
• where will it be mounted measuring device?

The first point is very important when purchasing a water meter, since a device for hot liquid cannot be installed for cold water and vice versa. The operating principle for cold and hot meters is the same, but they are made from different materials. The hot water meter can withstand temperatures up to 150 degrees; it is made of more heat-resistant and heat-resistant materials. For cold temperatures - up to 40 degrees, such devices are made of more simple materials. Also, hot water meters can show the temperature of the liquid, so they are very convenient.

If the water is polluted or has increased hardness, you should choose special meters or install dirt filters. Dirty water can affect the accuracy of the readings and also contribute to rapid breakdown of the device, so such factors should be taken into account when purchasing. As for energy consumption, there are devices that are non-volatile and require power from the network or batteries. The location of the mount also plays a big role, since the room may be damp, poorly ventilated or cluttered. Based on this, the cost of the device can be more or less affordable; the choice depends on your decision and preference.

Operating principle of a pulse water meter

Water meters with pulse output are considered the most popular, as they allow maximum measurement of the flow of cold and hot water. Such a water meter can be purchased at any specialized store. A pulse water meter is not very different from standard measuring instruments; it is also equipped with a dial indicator, a full revolution of which shows a certain liquid flow. Pulse water meters are mounted for cold and hot water, the device has a corresponding red or blue color. Thanks to modern technologies, there are meter models that transmit readings remotely.

As in classical devices, a pulse water meter is equipped with a counting device or flow meter that shows liquid consumption. The mechanical design has also not changed; the device has an impeller, which rotates as the liquid passes through. The main advantage of a pulse water meter is a magnet and a reed switch or hermetic contact. If the device enters a magnetic field, the reed switch will close. The principle of operation of a counter with a pulse output is that at the moment the magnetic needle makes a full revolution, the reed switch gives a pulse or an electrical signal. That is why the measurement accuracy of such a water meter is very high.

Features and advantages of pulse water meters

The operating principle of the measuring device allows you to obtain indicators remotely and automatically, and the flow meter will indicate the most accurate consumption of cold and hot water. It is worth highlighting other advantages, such as:

Pulse meters are also used in industries where it is necessary to control the supply of liquids. The device is attached to the supply pipe, and when the required volume has been taken, the liquid supply stops after a signal to the solenoid valve.

Using counters

On the market you can now choose both standard models and multi-tariff devices that count the consumption of cold and hot liquids separately. Thanks to such opportunities, consumers can calculate their consumption and save significantly on utilities.

The pulse counter is a radically new solution that solves many problems.

Devices for measuring cold liquid operate within temperatures from 8 to 45 degrees, with a maximum pressure of 1.5 MPa. Devices for hot liquids operate at temperatures from 45 to 90 degrees, pressure is 1.6 MPa. You can select meters that will send their data to one adder, where the total consumption will be calculated. This option is most in demand in large factories and enterprises where water is supplied to different points, but the consumption needs to be summed up.

On the issue of energy saving, the Government of the Russian Federation has set public utilities a task that is to reliably account for the consumption of energy resources: electricity, heat, gas and water supply.

Accurate automated remote water metering systems with real-time monitoring capabilities are becoming relevant. This allows us to completely eliminate human influence on the reliability of the indicators. Such devices can be controlled using special devices that have access to telecommunication networks. These include a pulse water meter.

What is it, its pros and cons

A pulse meter for hot and cold water is perfect not only for industrial purposes, but also for the population of the Russian Federation. Its main goal is to record the exact amount of resources consumed, and in real time. Over the relatively recent period of implementation, it has established itself as a reliable device for automated control of water costs.

Managing organizations and regional distribution organizations see pulse metering devices as effective application, which allows you to ensure high accuracy of calculated indicators with the possibility of their further sending to utility services via automated system.

Basically a water meter with a pulse output and standard device There is practically no difference between them. The basis of their work is classic scheme, in which the reading mechanism is launched by an impeller under the available water pressure. At the same time, the pulse device allows not only to set the volume of water consumption, but also to transfer the values ​​to an external storage medium.

• transmission of information regarding water consumption remotely in automatic mode;
• can be connected to complex data processing systems. For example, you can easily connect to ASKUV;
• low prices, which allows us to classify it as a budget class;
• high level reliability;
• resistance to various temperature influences, which makes it one of the best metering devices.

If we talk about the disadvantages, they are:

• the device has a certain service life, after which it must be replaced, otherwise the readings will be inaccurate;
• all information from the device can be transmitted only when it is connected to a radio or digital signal;
• It is imperative to use antimagnetic protection, since without it it is possible to special effort stop water metering forcibly.

Despite the existing shortcomings, the pulse meter is popular among the population of the Russian Federation.

Design

From a design point of view, the pulse meter circuit is no different from the design of standard flange or vane room water meters. The mechanical part remains unchanged. It is based on a dial indicator of water consumption, in which a full turnover is equated to a specific consumption.

Operating principle

The standard design scheme for cold or hot water is based on a counting mechanism, which calculates the volume of consumption. Pulse counters calculate the volume of flow and transmit information to certain system points.

So, let's take a closer look:

1. The output flow affects the impeller, which is located in the pipeline.
2. Then the connection is made directly to the operation of the coupling, which processes and then transmits the information to the indicator.
3. In it, at full rotation, the magnet contacts the sensor, and after that the indicator is indicated on the digital indicator.
4. The information is received not only on the screen, but is also transmitted to the meter itself, which determines the consumption of cold and hot water for a specific time period.
5. Upon completion of the calculations, the information is transmitted to the network for further reporting to utility companies.

It is important to pay attention to the fact that 1 pulse can be equivalent to, for example, 10, 100 or 1000 liters of water - the value directly depends on the diameter of the pipeline.

Managing a pulse meter does not entail any difficulties and does not require professional skills and abilities from the owners. The device, like the sensor itself, performs calculations automatically. Moreover, it does not require an electrical connection, which makes it a budget option.

It is important to remember: in the future it is planned to operate exclusively pulse counters.

How to connect it?

The water meter is connected by a utility service specialist.

This is due to the fact that in order to establish automatic dispatching information from a pulse meter, it is necessary to connect to it a network cable or a modem-translator, with the help of which the signal is transmitted via the GCM or LPWAN channel.

The meter must be connected by wire to the network for collecting the necessary information. Next, the readings will be transferred to a specialized settlement center, where they will be entered into the receipt for payment. In other words, there is no need to transfer evidence to property owners.

Taking readings

As noted above, owners of pulse meters do not need to worry about the need to take and transmit readings, since the device does this automatically.

At the same time, in practice there are often situations when, for some reason, the device does not transmit information, which leads to misunderstandings with utility services.

A pulse meter is a device for monitoring and measuring the volume of water consumed in any room where it is installed. Distinctive feature Standard water meters have a signal output for electronic processing. These devices can be used as sensors for autonomous water supply metering systems. They function perfectly with both cold and hot water flow. In our article we will discuss other features of pulse water meters.

In the design of the pulse meter, as in all other types, there is an arrow that indicates the amount of water consumption. It identically displays a roller indicator, which progressively displays water consumption. In this mechanism, each complete rotation of the pendulum is recorded. This is a device that is also called a reed switch.

The mechanism is based on electronic system, which is responsible for counting the pulse duration. It is worth noting that the supply interval depends on the flow rate of the hot or cold water supply circuit. This water meter does not require a power source, because the reed switch mechanism can cause a short circuit in low-current electronics.

A pulse counter consists of two main parts:

1. Reed switch;
2. A container that is completely sealed.

Also, it is worth listing the additional components of this device:

• Sensor small size, which is triggered by magnetic influence;
• Arrow;
• Magnet.

Attention! This is a very lightweight circuit that is characterized by reliability and durability.

Advantages of meters

The main advantages of a pulse counter include the following points:

• Low price;
• High demand;
• Compliance with SNiP and GOST standards;
• Certified product;
• A variety of models with a set of diameters of different sizes;
• Uninterrupted operation throughout life cycle;
• Strength and tightness of the case;
• Dimensions for installation in limited space;
• The package includes a set of adapters;

Important! It is imperative to install anti-magnetic protection, since the magnetic field can affect the accuracy of the readings.

There are two types of pulse counters:

1. Horizontal mounting;
2. Vertical mounting.

Solutions to operational problems for water meter

There are several solutions that can embody the operating principle of a counter with a pulse output:

1. Availability of an electrical source for operation. Decide this situation When taking readings, you need to use a magnetic contact that is controlled.
2. Method and process of data transfer. Information can be transmitted and processed only with the additional launch of a radio or digital signal.
3. The water meter's ability to integrate into more complex system information processing. This is worth talking about in more detail. Autonomous system account helps owners save some money and effort.

Attention! Even for a small area, installing a counter with a pulse output will be beneficial.

The concept of a pulse sensor

This device consists of a sealed container that houses a switch. The sensor is an independent mechanism from the system, which can be mounted in single-jet and multi-jet water meters.

The principle of the device circuit is connections with an adder and remote equipment. For full preparation To work, it is necessary to calculate the magnetic coefficient, which helps display the consumed displacement.

It is worth considering the importance of the operation of the reed switch, which, using a magnet, can cause a weak current to close. In terms of performance, this is much better than mounting various mechanical elements.

Important! This principle of operation produces a pulse signal output, the number of which is the indication of hot or cold water consumption, which is displayed on the device display.

Operating principle of the water meter

The operation scheme of a conventional device for cold and hot water is based on a counting mechanism that determines the amount of water consumption. A counter with a pulse output calculates the flow volume and transmits the data to the appropriate points of the system.

So, let's describe everything in more detail. The output of the water flow affects the impeller, which is located in the pipeline. Next, a magnetic coupling is connected to the work, which processes and transmits information to the indicator. Here, when it rotates completely, the magnet comes into contact with the sensor and the result is displayed on the dial.

The information is received not only on the display, but also sent to the meter, which calculates the consumption of hot and cold water for a certain period. Once this figure is determined, the information is sent to the network for reporting to utility services.

Attention! 1 pulse is equal to, for example, 10; 100; 1000 liters of hot water - this depends on the diameter of the pipe.

Controlling a pulse meter for hot and cold water is quite easy and does not require any special professional skills from the owner. The device, like the sensor, works automatically and does not require an electrical connection, which makes it a budget option.
Attention! In the future they want to introduce only pulse meters into circulation.

Application of pulse water meters

Such systems are capable of transporting data automatically to a centralized location. All calculations of consumption and cost of water consumption are made by the device itself. Its main advantage is that it will save you the hassle and will not be able to deceive you, because it has a very high percent accuracy.

For your information! Such meters are mounted in " smart homes", which are the technical perfection of our time.

This water meter functions perfectly in both cold and cold conditions. hot water. With a cold flow, it can withstand temperatures up to 40 degrees and pressure - 1.5 MPa. The same mechanism applies to hot water. Works great at temperatures up to 90 degrees and pressure up to 1.6 MPa.

The pulse counter can be mounted both vertically and horizontally. Most installations take place in the following institutions: schools, offices, apartments and other administrative premises.

In order to reduce costs in the water supply sector, it is advisable to pay attention to a water meter with a pulse counter.

Today, utility bills are a significant expense. family budget. Their cost forces consumers to think more and more not only about reducing the volume of electricity, water, and heat consumed, but also about the quality of the services provided.

Devices that allow you to take into account both the quantity of goods consumed and their quality come to the rescue. For example, water meters with pulse output.

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Types and principle of operation of tachometer water measuring instruments

A water meter is a measuring device used to record the amount of water (volume flowing through a section per unit of time).

The operating principle of tachometer counters is mechanical; depending on the design features and the main operating mechanism, they are divided into:

• vane and turbine;
• with or without pulse output;
• “dry” and “wet” type of action.

These meters are characterized by their low cost, long service life, and compactness, which allows them to be used in apartments and offices.

The operating principle of a counter equipped with a pulse output is based on the fact that a special device records electrical impulse.

The passage of the instrument needle through a full revolution, equivalent to 10 liters or 0.01 cubic meters, ends with the closure of the reed switch.

The built-in electronic system measures the pulse duration. The pulse frequency depends on the speed of the water flow. Such a device is capable of performing measurements in a wide range - 0-2500 m3/h. The inlet hole into the sensor has a diameter of 10-300 mm. Electricity from the mains is sufficient to operate the device. alternating current, it is equipped with a low-current electronic circuit.

Take note: Pulse water meters are characterized by ease of use, ease of installation, reliability and relative low cost.

Characteristics of tachometer water meters

Positive feature counters with pulse output is their insensitivity to temperature fluctuations and pressure fluctuations in the system.

The need to install a pulse counter is especially important when monitoring hot system water supply If we're talking about about the cold water supply system, a meter with a pulse output is not required.

Good to know: prerequisite When installing a meter with a pulse output, it is necessary to have antimagnetic protection. If it is absent, the device may give unreliable readings.

For such a system it will be convenient if there is a need to place the device display in a convenient place remote from the device itself. The industry produces devices equipped with a remote display.

Difference between water meters for hot and cold water

The water meter can take into account liquids of different temperatures. Distinctive feature devices installed on hot water supply systems are painted in red, and on cold water systems – blue.

The device can also be equipped with a temperature sensor. In this case, multi-tariff water metering is possible, i.e. Depending on the temperature, the volume of cold, warm and hot water is taken into account separately. The transition to multi-tariff electricity and water meters allows you to significantly save the family budget.

Three types of devices with pulse output are available depending on installation:

• For horizontal installation;
• For vertical installation;
• universal (provide for fastening in any location).

Permissible error of water meters

Flow meters installed on hot water supply differ not only in the materials from which they are made, but also in the degree of permissible error.

Devices for hot water have a higher rate than meters for a cold water supply system.

Accepted following values permissible error:

• Qmin-Qt – for cold water ±5%, for hot water — ±6%;
• Qt-Qmax – ±2% and ±3%, respectively, where flow rate Qmin is minimum, Qt is transitional, Qmax is maximum.

The nominal flow rate (Qn) for such devices is the same.

Operational life devices are designed for a minimum of 12 years. During this period they must undergo verification. For water meters in cold water supply systems, it is accepted once every 5-6 years, for hot water - once every 4 years.