Soviet tariffed water metering system when counting made according to the norm depending on the number of inhabitants, has sunk into the summer. In today’s world, every cubic meter of water should be taken into account, and the best assistant in this situation are modern water meters. Compact and accurate, they are easy integrate into almost any water supply system and correctly display the amount of water consumed – how cold as well as hot. The resulting saving on utility costs is a great incentive for those people who doubt, install a counter or not.
- Manufacturers – Reliability Rating
- Types of counters and classification
- Ultrasonic Counters
- Electromagnetic counters
- Resonant superstatic counters
- Advantages and disadvantages of electric meters
- Mechanical tachometer meters
- Measurement criteria
- Body material
- Water temperature
- Counter Options
- Calibration, verification and certification
- Reading, data transfer
- Intertesting interval
Manufacturers – Reliability Rating
Water meters – devices characterized by manufacturability and high accuracy, and therefore their production requires special equipment and great experience. Choosing a similar device, pay attention to the products of those manufacturers who proved themselves exclusively from the best side:
Although the last two brands are domestic, the quality of their products is at the highest level, and therefore their products by their main characteristics in no way inferior to imported, more eminent, analogues.
Types of counters and classification
The principle of operation of such devices is based on accounting the amount of water passing through a specific sensor. First thing draws imagination – classic induction counters in which water rotates the blades of a special disk, which measures the flow. Modern models have gone further and are now popular use the following types of water meters
The principle of operation of such devices is based on density measurement water flow using special piezoelectric sensors. The pulses emitted by them pass through the water stream and captured back, after which the information received processed by a special processor and converted to accurate consumption figures. Most of these devices are powered by electrical network, and in the event of a power outage autonomous power supply.
Devices based on law Faraday. The key elements of the device are two an electromagnet lying on both sides of a water jet. During work between both poles there is an EMF, the value of which is directly proportional to the strength of the water flow. Using simple algorithms processing, the device provides accurate figures for water flow.
Resonant superstatic counters
The principle of operation of devices of this class is to take into account resonant cycles arising from the transfer of water flow from main channel to auxiliary. The stronger the pressure of water than the device performs more work cycles, which counts special piezoelectric sensor. Using a special tire it communicates with the central processor, which and makes basic calculations.
Advantages and disadvantages of electric meters
According to the principle of its work, all of the above devices refer to electrical models that have as common virtues, and disadvantages.
High accuracy regardless of specific conditions operation, water quality, water supply condition;
Long life, no need for regular calibration and verification;
Possibility of remote testimony;
Unpretentiousness and a possibility of installation in almost any conditions;
Ability to configure for multi-tariff accounting;
The need for an external power source;
Mechanical tachometer meters
Devices well known to each of us. The key element is special impeller of the actuating unit, which leads to water flow movement. The rotating shaft drives the counting a system that records the consumed water – and cold, and hot.
Mechanical counters also have both strong and weak side:
Easy to install and dismantle if necessary;
Simple and clear display of current information;
Reliability and unpretentiousness in operation;
High accuracy of measurements;
Sensitive to induction and electromagnetic pulses;
Demanding on water quality;
Choose the most suitable meter for metering water under Certain operating conditions do not constitute any problems. All that is required of the buyer is to know the characteristics that attention should be paid.
An important parameter that directly affects longevity. Considering, that the water pressure inside the meter when measuring is high enough, the case of the device must withstand it and not leak. IN At present, meter housings are made of the following materials:
Brass, bronze – the most common alloys, differing high strength and decent viscosity. Used for any chemical composition of water, characterized by durability and unpretentiousness in operation;
Silumin is a special alloy based on aluminum with the addition of a small amount of silicon. The main advantages – low price and resistance to aggressive chemical compounds. Of disadvantages should be highlighted increased fragility and low resistance to mechanical stress. Silumin case can fail even with careless dismantling;
Synthetic polymeric materials. In its mechanical properties similar to high-quality metals and able to withstand high pressure, as well as unpretentious to the composition of water. Of the minuses emit the impossibility of operation in cases where the temperature water is more than 85-90 degrees;
Depending on this parameter, all counters are divided into three general categories:
Cold water meters. Devices designed for operation at temperatures up to 35-40 degrees;
Hot water meters. Withstand temperatures up to 120-130 degrees;
Universal. Allow operation at any temperature water;
When choosing a specific meter for water, you must pay close attention to its configuration. Packaged must all gaskets, washers and adapters necessary for mounting device. This eliminates the need to hike through shops for searching for missing items;
Calibration, verification and certification
Water meters – devices subject to mandatory certification, and therefore when buying a particular model is necessary make sure that the device has passed all the necessary procedures, defined by law and ready to install. In the case of imported counters need to make sure that a specific model Certified and approved for installation in our country.
Reading, data transfer
If we talk about budget models, take readings and hand them over to interested services manually. Electronic devices in this regard are much more universal. Many of them are equipped with a special PLC modem, independently reporting in the reporting period and not requiring intervention person.
The parameter reflecting the period of time after which the device must be sent for verification and, if necessary, to calibration or repair. Many manufacturers have a given period. is about 5-6 years, but for many electronic devices It can be increased to 8-10 years.
In the following articles, our experts tell you how to choose a kitchen sink and the secrets of choosing a toilet.
Attention! This material is subjective opinion of the authors of the project and is not a buying guide.