The invention relates to a measurement and water supply control system consisting of an electronic central water meter, the central unit, and the water flow sensors. The Water leaks, the most precious commodity we possess, have troubled both a lot of technicians and consumers. They have caused both ecological and economic damage. There have been quite a few cases when the entire water network had to be repaired, in search of the leak within the same or a nearby building, causing a variety of economic damages such as masonry dampness, destruction of wooden floors, cupboards, furniture, electrical appliances and others. With this as a starting point, I designed a water leakage monitoring system, which was patented in OBI and I was awarded on 16/12/2010 the number: 1007118 patent certificate. This system uses control devices which mea- sure the water consumption and promptly notify the water company and the consumer for possible water leakage in the installation before or after the water meter. Furthermore it interrupts water supply to the installation thereby reducing unnecessary water loss to a minimum.

The advantage of this invention is that it complements and refines the existing system I designed, with a view to annihilate any water leakage and consequently any damage economic and ecologi- cal, as well as the accurate, prompt, safe and economical measurement of consumption via telemetry.

The measuring system and water supply control consists of: (A) the central water meter, which is electronic, accurate, vibrational with integrated solenoid stop valve of the flow, which enables it to accept and give the commands we need. (B) From the innovative water flow detector, which I have named because it is a component which we will need to put into each water outlet (bath battery, washbasin battery, sink battery, toilet, laundry, garden fountains). It is mounted and adjusted accordingly to the thread of each battery in the space where the filter is. Mounting is very simple and unaltered. And (C) of the central unit which receives all In detail: (A) the electronic water meter is vibrational and accurate in the measurements. It consists of: (a) an electric accu- mulator (battery), (b) an impeller which is used to exploit the kinetic energy from the water passing and converts it into electricity, thereby charges the electricity storage device (battery) and will not need frequent replacement or a permanent power supply, and (c) a solenoid valve to close the supply upon detecting any leakage.

(B) The water detector is the component we place on each water supply outlet to pass the water we intend to use. The waterproofing material can be made from either polyethylene or brass. It has two sections, the watertight (Figure 3.1 and Figure 5.1) and the water passage (Figure 5.2). In the section that the water passes there is the thread (Figure 4.1 and Figure 5.2) to be placed at the point where now is the filter for batteries or in any water outlet.

Then there is the new filter into the water flow detector (Figure 4.2 and Figure 5.3) and then an impeller (Figure 4.3 and Figure 5.4) which is covered in half (Figure 4.4) so that as soon as the water flows, it passes and rotates the impeller, finally there is a strainer (Figure 4.5, Figure 5.5) for the water to flow vertically without diffusing uncontrollably. In the watertight department there is a gear (Figure 5.6) which is driven by the impeller located in the adjacent section where the water flows. This movement is activated every time we open the relevant service so as the central unit to receive the water flow command.

The system works as follows: let us assume that there is no leak in our installation. If there is no consumption the meter is stopped and all the flow detectors as well. As soon as we turn on a water supply, our electronic meter is activated immediately, sending a signal to a central unit that there is consumption. At the same time the impeller of the water flow detector begins to rotate, sending a signal to the central unit.

(C) The central unit receives all the signals coming from the electronic meter (A) and all the flow probes (B). The signals received by the central unit from the electronic meter, is its function activation and consumption - measuring. The signal received from flow sensors (B) is the infor- mation that this particular supply has been used. When the control unit receives these two signals it correctly assumes that there is no leakage and all it does is count the consumption the electronic meter sends.

In case of a silent leak then the electronic meter will send a signal back to the central unit that consumption has begun. However once no signal is sent by any flow probe control that the unit has been activated (this, as I have said, is done simultaneously with the electronic meter activation) it is considered by the central unit as a leak and instructs the solenoid valve to immediately shut down the main supply.

With this advanced system we can be sure that there won't be any wasting of the most precious commodity we have, unbeknownst to us and also we will not need to pay huge bills to the water company nor exorbitant amounts for repairing damage caused by leaks to us or to third parties.

The potential in this system are many. It can be used either individually by each consumer to protect their property and those around them placing the specific system, which consists of one electronic water meter, one control unit and water detectors similar to the supplies of each installation.

There is also the possibility to be placed collectively in a hotel or residential complex, and large city networks with much more benefits. In this case we can detect leaks to the central water supply. This can be done if you put similar electronic water meters in the central supply at various points. Electronic water meters of the central supply along with domestic electronic meters are connected to the main unit of the water company. The company has the ability to know the mea* surements of each domestic meter or of the central conductor via telemetry. This system has the potential to make subtractions of water flow via an electronic water meter of the main water supply to the next, subtracting the intermediate consumption of domestic electronic water meters thus finding if there is a silent leak in this part of the main water pipe. As far as the domestic counters are concerned it is able to issue bills without being necessary to have employees, avoiding expenses and human errors in measurements.

The leak diagnosis of the central supply can be done by the managing company, through its cont- rol center. The central control unit receives all measurements of domestic and central networks meters.