Water meter impulse output itself. Water meter with pulse output: device and principle of operation. Water meter with pulse output. Features and benefits of impulse water meters

A pulse meter is a device for monitoring and measuring the volume of water used in any room where it is installed. A distinctive feature from standard water meters is the presence of a signal output for its electronic processing. These devices can be used as sensors for autonomous water supply metering systems. Works great with both cold and hot water. In our article, we will discuss other features of impulse 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 displays identically the roller indicator, which incrementally displays the water flow. In this mechanism, each complete rotation of the pendulum is fixed. This device is also called a reed switch.

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

impulse counter consists of two main parts:

Reed switch;
A container that is completely sealed.

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

A small sensor that is triggered by magnetic action;
Arrow;
Magnet.

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

Advantages of counters

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

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 the entire life cycle;
Strength and tightness of the case;
Dimensions for installation in limited space;
The package includes a set of adapters;

Important! Be sure to install anti-magnetic protection, as the magnetic field can affect the accuracy of the readings.

Pulse counters are of two types:

Horizontal mounting;
Vertical mounting.

Solutions to operational problems for a water meter

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

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

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

The concept of an impulse sensor

This device consists of a sealed container that houses the 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 the connection with the adder and remote equipment. To fully prepare for work, it is necessary to calculate the magnetic coefficient, which contributes to the display of the consumed displacement.

It is worth considering the importance of the operation of the reed switch, which, with the help of 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 forms the output of a pulse signal, the number of which is the indication of the consumption of hot or cold water displayed on the display of the device.

The principle of operation of the water meter

Scheme of operation of a conventional device for cold and hot water is based on a counting mechanism that determines the amount of water flow. A meter with a pulse output counts the flow volume and transmits the data to the appropriate points in 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 clutch is connected to the operation, which processes and transmits information to the indicator. Here, with its full turn, the magnet comes into contact with the sensor and the result is displayed on the dial.

Information is received not only on the display, but is also sent to the meter, which calculates the consumption of hot and cold water for a certain period. After determining this figure, the information is sent to the network for reporting to utilities.

Attention! 1 pulse equals, for example, 10; 100; 1000 liters of hot water - it depends on the diameter of the pipe.

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

Application of pulse water meters

Such systems are capable of transporting data automatically to a centralized location. All calculations of the 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 percentage of accuracy.

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

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

The pulse meter can be mounted both vertically and horizontally. Basically, installation takes place in such institutions: schools, offices, apartments and other administrative premises.

The topic of energy efficiency of buildings and industrial enterprises is becoming more and more relevant every day. The use of a device called a pulse water flow meter - will modern solution, which will allow without human intervention to control the consumption of resources. The use of such measuring equipment will provide an opportunity to automate the process of counting the spent water. In this article, we will analyze the design, advantages and disadvantages, the scope of the device in question.

Design and principle of operation of a water flow meter with a pulse output

An impulse water meter is a device for measuring the amount of water passing through a pipeline.

The mechanical design of this water meter is made in the same way as in a conventional flow meter. During operation, the flow of fluid turns the impeller. Through a magnetic coupling, rotation is transmitted to a system of plastic gears that rotate the arrows on the dial of the device.

Important! But unlike mechanical water meters, a water meter with a pulse output has a small magnet attached to a moving arrow and a sealed contact (reed switch) on the dial.

The principle of operation of the mechanism is that when a magnet passes over a reed switch, the latter generates an electrical signal to a low-current device connected to the device. electrical network. This pulse is used by the equipment to calculate the amount of water. By measuring the time interval between two signals, when the arrow on the dial makes a full turn, the electronic equipment counts the consumption of liquid passing through the pipeline.

This device can be connected automatic equipment, which counts the amount of liquid that has passed through a pipe or water supply system, turning on and off the water supply valves depending on its flow rate.

Application of impulse counters

The use of meters that automatically calculate and transfer to a computer the amount of resources used is convenient for organizations. Water meters with a pulse output make it possible to eliminate human labor in monitoring the consumption and automate the process of taking readings from the device.

Important! Signals from such meters can be transmitted via wireless or cable communication channels to the accounting point. Where the system independently enters into the database the amount of water spent by each consumer.

Remote display, on an electronic flow meter that converts pulses into cubic meters, and displays volume readings. This is convenient when access to the water meter dial is difficult (the measuring device is installed in the basement of a building or is underground).

Pulse water meters are used:

management companies to exchange information on water consumption with resource-supplying organizations and during construction plumbing systems"smart houses";
on the industrial enterprises and in office buildings where large-scale hot and cold water supply networks operate, and there is a need to centrally regulate water pressure and control fluid consumption;
in agriculture;
in hotel business to obtain operational data;
in any field of activity where remote, automatic control of the consumption of consumed water resources is needed, or access to the meter dial is difficult (the meter is buried in the ground).

Advantages and disadvantages of pulse water meters

The advantages of such accounting devices include:

the ability to transfer meter readings to the water supply control scheme at agricultural and manufacturing enterprises;
the ability to remotely, in real time, control water consumption and transfer data to computer systems for accounting for the use of resources;
durability of the device;
high accuracy of readings of the measuring device;
does not require connection to a power source, since the reed switch itself generates an electromagnetic pulse and causes a short circuit in low-current electronics;
works equally well for horizontal and vertical installation on the pipeline.

Disadvantages of counters with pulse output:

sealed contact may fail over time;
high cost of a water meter together with electronic information transmission systems;
the flowmeter is blocked by a magnet.

How to connect a pulse water meter

Pulse meters for cold and hot water can be mounted both on horizontal and on vertical pipe. After installation, the device is connected to a low-current cable, through which electrical signals will be transmitted to the reader. The meter itself generates an electrical impulse, so there is no need to connect the flow meter to the power supply.

Important! The supplied signals are recorded by the reader, and then transferred to the adder, which converts information from pulses to cubic meters. Adder on digital screen shows the amount of liquid in cubic meters. Several flowmeters can be connected to one totalizer.

Adder using network cable or GSM modem transmits readings to a computer or to an automated system of the management company.

Conclusion

An impulse meter is a simple and convenient metering device for remote control of water consumption, performed in automatic mode. It allows you to transfer information automatic systems and can be used to control production processes. The meter has found application in agriculture, hotel business, water supply networks manufacturing enterprises and office centers, housing and communal services and other areas of activity.

The use of a meter is justified if it is required to take readings several times a day or remotely control water consumption and to eliminate human factor when drawing up an invoice for the resources used. Installing the device in an apartment is not advisable, since the owners take readings no more than once a month.

Pulse water meters vane PULSE (single-jet, dry-running) are designed to measure the volume of drinking cold water at temperatures from 5°C to 40°C and hot water at temperatures from 5°C to 90°C. water supply network no more than 1.6 MPa (16 kgf/cm3).
Installation of the counter is allowed both horizontally and vertically.
Water meters have highly effective protection against magnetic fields of permanent magnets.
Used to account for water in the water supply systems of apartments, individual houses, offices, office buildings.

Operating principle

Meters with a pulse output, like conventional water meters, count the number of revolutions of the impeller under the action of the water flow transmitted to the indicator device using magnetic couplings. Meter mechanism does not come into contact with water (dry meters).
Pulse water meters allow you to read the meter readings automatically and remotely, through additional devices to keep a centralized record of water consumption. Each turn of the arrow of the counting mechanism counts a fixed amount of water. A full turn of the arrow (0.01 cubic meters = 10 liters) closes the reed switch and it sends an impulse via a wire line to the flow computer or heat meter. It can then be transmitted digital channels connections to the network of the energy metering system or even the Internet.

The advantage of such meters is, first of all, their ease of handling, ease of installation, no need for electrical power in the pulse meter circuit, relative cheapness and reliability.

The legislation on energy saving sets the task for the housing and communal services system to establish reliable accounting of consumed energy resources: electricity, heat, gas and water. Relevance is acquired by systems for accurate remote metering of water consumption with the possibility of automatic monitoring, which eliminates the influence of the human factor on the reliability of readings.

They are controlled through devices with access to telecommunication networks, which include the pulse output of a household water meter. It allows you to connect the meter to an external data repeater that transmits information to the management or resource supply organization through the selected cable or wireless communication channel.

What is a pulse water meter and why is it needed

An impulse water meter is a common solution for centralized metering points in the residential sector. It serves to accurately record the amount of resource consumed in real time.

A typical impulse water meter.

Wing meters with a pulse output are designed for installation in water meter units of multi-apartment and individual residential buildings, summer cottages and gardening areas. In agriculture and industry, turbine meters with a pulse output are more commonly used.

Management companies and RSO see in impulse water meters effective solution to ensure the accuracy of readings with the possibility of their transfer to the database automated system control and accounting of water (ASKUV). Consider how hot and cold water meters with a pulse output work.

The principle of operation of impulse water meters

Structurally, the meter circuit with a pulse output does not differ from the device of the usual flanged or vane apartment water meters. The mechanical part of the design remained the same. It is based on a pointer indicator of water consumption, where a full turn is equal to a certain volume of consumption.

The flow meter is driven by an impeller rotating under the pressure of water.

It's pretty simple circuit with a relatively low price. The most vulnerable part of the mechanism - sealed contact - which quickly breaks down.

Algorithm for taking and transmitting readings from pulse meters

The main structural difference between a pulsed water meter and a conventional wet meter is that it is equipped with a low-power magnet and a hermetic contact (reed switch), which closes when exposed to magnetic field. At the moment of making a full revolution of the counting mechanism, the reed switch gives an electrical impulse, which is read by an external device and fed to the signal console.

The electronic system of the pulse water meter is responsible for counting the duration of the pulse, the interval of which depends on the speed of the water flow. It is noteworthy that a pulsed water meter does not require an additional power source: the reed switch itself generates an electromagnetic pulse and causes a short circuit in low-current electronics.

Where pulse water meters are applicable

An analysis of the data on who connects the impulse meter showed that these electronic metering devices are in demand where not only the economic effect of the work depends on the timeliness and accuracy of the transmitted readings, but the property interests of citizens are affected. Timely and accurate readings of impulse meters are beneficial for management companies (MC) for settlements with resource supply organizations (RSO). And to the resource workers themselves in the case of direct settlements with residents.

Smart metering devices make it possible to save, count the consumed resources and pay only for them
Andrey Chibis, Deputy Minister of Construction and Housing and Public Utilities of the Russian Federation.

Entrepreneurial employees of the Criminal Code, tired of collecting evidence in the “looked - wrote down - transmitted” mode, find alternative ways check readings and set up accounting automation. For example, in the HOA "Rainbow" (Lermontov, Stavropol Territory), water meter readings are photographed using web cameras, then they recognize computer program and sent to RSO. Others also publish on the forums of housing and communal services workers creative ideas. For example, they propose to install optical readers of the comb rotation speed on the counters, which are made from old computer mice with an optical drive - this is the same red light, which in fact is a video camera with a minimum resolution.

What is the difference between a pulse water meter and a conventional one

Fundamentally, a water meter with a pulse input and a conventional water meter are no different from each other. Their work is based on the classical scheme, where the counting mechanism is driven by an impeller under the pressure of a water flow. However, the pulse counter not only records the volume of the flow, but also transfers the readings to an external data storage device.

It is necessary to automate the calculations of energy consumption. Today it is not possible to collect data in a timely manner and determine payments. We see a way out in the installation of metering devices with remote transmission data. Modern technology allows this.

Mikhail Men, Minister of Construction and Housing of the Russian Federation

Advantages of pulse counters

Transfer information about water consumption automatically and remotely.
Suitable for connection to a more complex information processing system, for example, ASKUV.

In order to set up automatic scheduling of data from a pulse water meter, it is enough to connect a patch cable or modem-translator to it, transmitting a signal via GSM or LPWAN channels.

Cons of impulse water meters

The reed switch fails over time, and the water meter stops counting the water flow with the required accuracy and reliability.
The information received from the water meter can be fully processed and transmitted only with the additional launch of a radio or digital signal.
Antimagnetic protection is required, since the device is easily blocked by a neodymium magnet, and only ASKUV is able to reliably track the fact that the device is exposed to an external magnetic field to stop the counting mechanism.
On their own, meters with a pulse output do not have feedback from the water consumer, and he has to control his own consumption “by eye”.

Use of water meters with pulse output for ASKUV

Most meters with a pulse output, certified in Russia, are positioned as anti-magnetic. Manufacturers claim that they are fully protected from stalling with neodymium magnets. However, in practice it turned out that the effect of a magnet is possible, and it leads to a quick breakdown of the reed switch on pulse meters for hot and cold water.

Thus, pulse meters, with all their advantages, turned out to be not the most reliable solution for organizing reliable accounting of water consumption.

Progressive development for automated accounting

Pulse water meters are being replaced by combined devices: meter + translator. The STRIZH company accepted the challenge of those who offer to buy “impulse devices”, continue to steal water from neighbors, deceive the management company or homeowners associations.

We equip metering units with the innovative STRIZH AQUA-1 counter with a built-in modem. This universal device accounting works autonomously, remotely monitors the current state of water consumption in real time and, in case of unauthorized interference in its work, sends an alarm signal via SMS, a message in Telegram and in Personal Area. The device does not require integration into ASKUV, as it is its analogue, and, moreover, less expensive.

How to reduce ODN and collect water meter readings online

In continuation of the article.

Price utilities increased significantly, so many consumers began to think about ways to save money and save the family budget. Pulse water meters will help calculate the cost of hot and cold water and save the family budget significantly. Often we do not get what we are promised and for which we pay a lot of money, instead of hot water, it is slightly warm, and cold is served with little pressure.

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 reduce financial costs accordingly.

How to choose a good water meter

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

cold or hot water will pass through the meter?;
degree of pollution or hardness of water;
what cost do you expect?;
how much power can the measuring device consume?;
where will the meter be installed?

The first point is very important when buying a water meter, since a device for hot liquid cannot be installed for cold water and vice versa. The principle of operation for cold and hot meters is the same, but they are made of 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 - up to 40 degrees, such devices are made of more simple materials. Also, water meters for hot water can show the temperature of the liquid, so they are very convenient.

If the water is contaminated or has increased hardness, you should choose special meters or install mud filters. Dirty water can affect the accuracy of the indicators, as well as contribute to the rapid breakdown of the device, so these factors should be considered when purchasing. As for the energy consumed, there are non-volatile devices that need power from the mains or batteries. The location of the mount also plays a big role, since the room can be damp, poorly ventilated or cluttered. Based on this, the cost of the device may be more or less affordable, the choice depends on your decision and preference.

The principle of operation of a pulse water meter

Water meters with a pulse output are considered the most popular, as they allow you to measure the flow of cold and hot water as much as possible. Such a water meter can be bought at any specialized store. An impulse water meter does not differ much from standard measuring instruments, it is also equipped with a dial indicator, a full turn of which shows a certain fluid 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 indicators remotely.

As in classic devices, the pulse water meter is equipped with a counting device or flow meter that shows the flow rate of the liquid. The mechanical design has also not changed, the device has an impeller, which rotates when the liquid passes. The main advantage of an impulse water meter is considered to be 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 turn, the reed switch gives an impulse or an electrical signal. That is why the measurement accuracy of such a water meter is very high.

Features and benefits of impulse water meters

Principle of operation measuring device allows you to receive indicators remotely and automatically, and the flow meter will indicate the most accurate consumption of cold and hot water. There are other benefits worth mentioning, 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 flow of cold and hot liquids separately. Thanks to these features, consumers can calculate the consumption and significantly save on utilities.

The impulse counter is a radical new solution that solves many problems.

Devices for measuring cold liquids operate within temperatures from 8 to 45 degrees, while the maximum pressure is 1.5 MPa. Devices for hot liquids work with temperatures from 45 to 90 degrees, the 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 flow must be summarized.