The TW series water meters, manufactured in Italy by TECNIDRO, are specifically designed for all applications with raw water, in particular, agricultural irrigation, gardening and waste waters.
The impeller measures the flow speed and its rotation is transmitted to a screen for the visualization of the total recorded volume.
This class of measurers adopts an innovating technology that differs from the traditional equipment, characterizing itself by the following particularities:
! Tangential Impeller: it is similar to a windmill immersed and placed in tangential position with respect to the water flow. The water passage is then totally free, allowing the solid transit like sand, leaves, stones, etc… , normally present in untreated waters, without risks of cloggings or usury. The impeller invades a very small portion of the total pipe section, limiting the pressure drops to non significant values.
! Magnetic Transmission: the impeller and the immersed gears do not have physical connection with the external counter mechanism that registers and visualizes the totalized volume. The impeller rotation it is transferred to the registry using a magnetic connection that acts through a brass plate. This characteristic allows to orient the screen in the position of more opportune reading and assures that the gears of the registry do not make contact with the water and condensation phenomena do not take place. The clock dial can be replaced without needing of draining the pipe.