By Phillip E. Prueter, P.E., Founder & Principal Engineer at Prueter Engineering, Christopher Aguayo, VP of Sales, Marketing, & Consulting at Data Pioneer Solutions, Lietai Yang, PhD, Advisor at Data Pioneer Solutions, and Narasi Sridhar, PhD, Technology Advisor at Data Pioneer Solutions. This article appears in the September/October 2026 issue of Inspectioneering Journal. Introduction Coupled multielectrode array sensor (CMAS) technology has been leveraged since the late 1970s.