How Water Meters Work
Our water meters measure the volume of water used by a household in kilolitres. For your reference: 1 Kilolitre = 1000 litres.
Our meters follow the volumetric rotary piston principle of measurement (positive displacement meters) ensuring the highest levels of reading accuracy even at the lowest flow rate. The meter can be installed in any position: horizontally, vertically or on inclined pipelines, maintaining optimum performance with no loss of accuracy.
The following diagram shows the internal mechanism of our latest water meters.
The water flowing through the meter drives the circular piston in an eccentric (not perfectly circular) path around a measuring chamber, each revolution representing the transfer of a known quantity of water.
The rotary action of the piston is transferred to a drive coupling from which it is transmitted to the combined gear and dial unit. The combined gear and dial unit has a simple straight reading display.
Solid particles are gathered by a strainer preventing damage. Partial obstruction of the strainer will have no adverse effect on the accuracy of the meters registration.
A body ‘O’ ring seal between the measuring chamber and the meter body ensures that internal leaks which could by-pass the measuring chamber are eliminated.
Easy to readThe number dials are fully sealed and are liquid filled using a vacuum. The dials are completely immersed in the lubricating non-toxic liquid. A sac attached to the dial casing acts as a balancing membrane ensuring the pressure of the liquid in the dials equals that of the external water.
The dial window is inside the meter body in the direction of water flow for simplified reading. It offers a simple, straight reading display - like the odometer in a car.
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