The new SOPA air gap sensor, from Festo , is designed to be used in tooling applications to make sure that a part is seated properly in a jig before it is machined, welded or assembled.
The SOPA air gap sensor is able to measure gaps of between 20 and 200 micron. The SOPA air gap sensor is precise enough to detect if a work piece is obstructed by a human hair.
The SOPA air gap sensor consists of a control module and up to 4 sensor modules. The control module has a built-in pressure regulator and is responsible for delivering regulated air to the sensor modules, as well as delivering higher pressures to clean the nozzles.