Orbit® Confocal Measuring Transducer from Solartron Metrology

Confocal Measuring Transducer

Solartron Metrology introduces a new compact, non-contact measurement transducer. Being the same 8 mm diameter as a standard Solartron gauging probe and fully compatible with Solartron Metrology’s Orbit® 3 Digital Measurement System the new no contact confocal measuring transducer brings another technology to our extensive range.

For applications where a contact gauging sensor is unsuitable, this is a cost efficient non-contact measurement solution that includes options for two transducer types with 1.5 mm or 5 mm measuring ranges, and a small spot size to measure parts with fine features.

The Confocal system uses a white LED to generate the signal to the Confocal head. Optics within the head split the light into its spectral colours and the colour focused onto the object being measured is reflected back. This is captured by the head and processed by the controller to give the measurement. The controller provides the ability to change measuring parameters to accommodate different materials. The sensor is not affected by changes in background light levels.

A significant advantage of this product is the ability to measure not just dimensions but also thickness of transparent materials using just one transducer.

As the measuring transducer is completely passive, only light enters and is received, the transducer can be used in environments where a faulty electrical sensor may cause an explosion.

Confocal application

Coupled with Solartron’s range of laser sensors, ranges from 100 mm to 2 mm and a myriad of different contact sensors Solartron now offer the capability for the end user to fully integrate measuring solutions as shown in the above application. A confocal transducer is measuring the thickness of the glass substrate; a laser is checking the position of a white ceramic feature while contact gauges check the parts width.