Tangential Meter TW

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.

! Removable Mechanism: the measurement device (counter mechanism) is realized in a single and compacts piece and it is possible to be disassembled without needing disconnecting the body of the watermeter from the pipe.

! Adjustment Device: the mechanism includes a baffle plate that diverts the flow towards the impeller and it determines the precision of required measurement. The baffle plate is totally guided and protected in the immersed part of the mechanism and it is possible to fit its position by means of a micrometric screw, placed under the counter mechanism. The adjustment system is then trustworthy and protected, assuring that the metering precision remains stable during the measurer service.

! Pulse emitter: the counter mechanism and the totalizer are protected inside a transparent plastic capsule that presents grooves (dovetail joint type). These grooves allow contemporarily to place up to two pulses emitters dry contact type reed and an optoelectronic sensor type. The fixation system is safe and trustworthy, it does not invade the screen and it does not require to drill the capsule compromising its watertightness.

! Instant flow: the water meters TW series can be equipped with a digital equipment (mod. IST) for the instant flow visualization. The indicator is connected to the meter by means of a pulse emitter and is available in compact version (mod. IST-C) without connection cable, or separated (mod. IST-S), adapting itself to all installation needs. This equipment is designed for total immersion and is powered by a replaceable long life lithium battery.

The design of the water meters series TW, it is robust and at the same time simple conception, it offers all guarantees of good operation for all applications in open field finalized to the measurement of irrigation or not treated water.

Tangential Water Meter TECNIDRO® TW Series