01 March 2012
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Subtle differences in precision volumetric dispensers

At first glance preeflow volumetric dosing dispensers from Intertronics appear to be very similar and this is largely true with the eco-PEN 300, 450 and 600 all showing better than 1% accuracy through ViscoTec's patented endless piston design.

However, there are subtle and important differences to be considered. For instance, the eco-PEN 300 is suited to a wide range of low to high viscosity materials making it ideal for application of dots and beads with maximum volumetric precision and to joint sealing technologies adaptable to track speeds. It is therefore of interest in electronics, photovoltaics, laboratories, medical, bio-sciences and optics/photonics.

Accuracy is achieved by a rotor and stator pressure tight continuous displacement system. This ensures gentle handling of the dispensing medium without damage to fragile inclusions. Clean control is afforded with suck back achieved by rotor reversal, which ensures clean flow cut off whilst preventing post-dripping effects.

The endless piston technology is driven by a DC motor with incremental encoder and integral planetary gearing which is not only at the heart of repeatable accuracy, it also confers viscosity independent dosing, as well as enabling the equipment to provide dosing which is unaffected by primary pressure – the system helpfully is also particularly easy to clean.

Author
Paul Gay

Related Companies

Intertronics

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