Designing and Manufacturing Dynamic Pressure Sensors Using Piezoceramic-Based Thick Films

In this article, design and manufacturing of a dynamic pressure sensor based on piezoelectric structure has been put on the agenda. Essential sensor elements are consists of a piezoelectric element that screen printed as sensor element and The five basic components consists of diaphragm, housing, the electrodes and the connector. laser welding, Wire Cut, electrical discharge machining, mold pressing, turning, milling and. .. are used in Manufacturing processes. The sensitive element, consisting of a circular piezoelectric layer sandwiched in two conductive layers, is screen printed, it has 0.5 mm thickness and 5 mm diameter. The sensitive element has a structure of a plane capacitor with the piezoelectric film as dielectric and the two conductive layers, based on Ag material, as armatures. Device was encapsulated in a stainless steel housing for the dynamic test. The measuring range covers pressure up to 100 MPa while the reaction time is less than 10 µs. This dynamic pressure transducer is ideal for measuring pressure transients or dynamic pressure pulsations in liquids or gases.