Design, Packaging and Characterization of a Langasite Monolithic Crystal Filter Viscometer

A two-port monolithic crystal filter (MCF) viscosity sensor has been developed using high coupling langasite material and advanced packaging techniques (1). The present work details the evaluation of quartz and langasite MCF elements with varying shapes, contours and electrode designs. The study has resulted in a commercial design on 10.25 mm blanks, housed in a TO-8 header with support circuitry contained in a ½" NPT threaded bolt. Copyright © 2007 IFSA.