Page 2 - Industrial Technology April 2021 issue
P. 2

Harnessing piezo technology for precise,

          dynamic, control applications




          As we come out of lockdown, now is the ideal time to consider piezo technology. Festo provides the know-how to
          make the transition quick and easy, whether it’s supporting selection of standard products or the engineering of
          custom solutions for your specialist volume requirements.




          Over 140 years ago, the Curie brothers

          published their finding that electrical
          charges were generated on the deformation
                                                             Piezo element
          of certain, special crystals. They later went
          on to prove the theory that the reverse effect
          also held. Applying a voltage causes a             Cover plate
          reversible, proportional deformation to these
          crystals.

          Since then, the effect has been utilised in
          applications from sonar sound generators

          and firelighters to today's sophisticated ink-
          jet printing elements and fuel injection
          valves.

          Festo Piezo valves operate extremely fast
          and repeatably, making them ideal pilot
          devices in closed-loop flow and pressure                                                     Piezo crystal deforms

          control valves. Their meagre power                                                               under voltage
          consumption means they perform even using
          only battery power.
                                                                                               Air output
          For advice on the suitability and selection of
                                                             Air input
          piezo technology, our application engineers
          and specialist LifeTech team for laboratory
          automation and medical devices, are here to
          support you.






                                                                                            Precise proportional mass
                                                                                            fl ow control
                                                    Outstanding proportional
                                                    pressure regulation
            Encapsulated piezo element for
            reliable operation




                                                                                                                     VEMD




                                                                     VEAA/B
                                    VEAE
                                                                                            Gas mixing or burner controls call for

                                                                                            precise mass flow control. Piezo control
            Fully automating the mounting of the    Infinitely adjustable, low energy, virtually   is dynamic and long-lasting despite

            piezo pilot elements reduces            silent. Ideal for use within laboratory and   millions of switching cycles. The low
            manufacturing costs and ensures         patient-care environments as well as    heat generation prevents heat transfer
            repeatable, reliable operation.         more traditional automation applications.  to the media.
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