When Wallingford-based Amphenol Corp. announced plans last month to acquire sensor-technology company MTS Systems Corp. for $1.7 billion, the price tag was eyebrow-raising, but the strategy made sense. “For many many years, we have seen more and more of our interconnect products being married together with some type of a sensor,” said R. Adam Norwitt, CEO of Amphenol, which makes electrical, electronic and fiber optic connectors, cables and interconnect systems for the telecommunications, aerospace and other industries. “We see demand for sensors growing, really, across all the markets where we’re focused.” Norwitt’s not the only one who sees growth opportunities in sensor technology, which is expected to blossom globally into a $287 billion industry by 2025, according to Allied Market Research.